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Created February 4, 2018 19:23
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axe.js 3.0 alpha with memoized axe.utils.select
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axe.js
/*! aXe v3.0.0-alpha.9
* Copyright (c) 2018 Deque Systems, Inc.
*
* Your use of this Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This entire copyright notice must appear in every copy of this file you
* distribute or in any file that contains substantial portions of this source
* code.
*/
(function axeFunction(window) {
var global = window;
var document = window.document;
'use strict';
var _typeof = typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol' ? function(obj) {
return typeof obj;
} : function(obj) {
return obj && typeof Symbol === 'function' && obj.constructor === Symbol && obj !== Symbol.prototype ? 'symbol' : typeof obj;
};
var axe = axe || {};
axe.version = '3.0.0-alpha.9';
if (typeof define === 'function' && define.amd) {
define([], function() {
'use strict';
return axe;
});
}
if ((typeof module === 'undefined' ? 'undefined' : _typeof(module)) === 'object' && module.exports && typeof axeFunction.toString === 'function') {
axe.source = '(' + axeFunction.toString() + ')(typeof window === "object" ? window : this);';
module.exports = axe;
}
if (typeof window.getComputedStyle === 'function') {
window.axe = axe;
}
var commons;
function SupportError(error) {
this.name = 'SupportError';
this.cause = error.cause;
this.message = '`' + error.cause + '` - feature unsupported in your environment.';
if (error.ruleId) {
this.ruleId = error.ruleId;
this.message += ' Skipping ' + this.ruleId + ' rule.';
}
this.stack = new Error().stack;
}
SupportError.prototype = Object.create(Error.prototype);
SupportError.prototype.constructor = SupportError;
'use strict';
var utils = axe.utils = {};
'use strict';
var helpers = {};
'use strict';
var _typeof = typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol' ? function(obj) {
return typeof obj;
} : function(obj) {
return obj && typeof Symbol === 'function' && obj.constructor === Symbol && obj !== Symbol.prototype ? 'symbol' : typeof obj;
};
function getDefaultConfiguration(audit) {
'use strict';
var config;
if (audit) {
config = axe.utils.clone(audit);
config.commons = audit.commons;
} else {
config = {};
}
config.reporter = config.reporter || null;
config.rules = config.rules || [];
config.checks = config.checks || [];
config.data = Object.assign({
checks: {},
rules: {}
}, config.data);
return config;
}
function unpackToObject(collection, audit, method) {
'use strict';
var i, l;
for (i = 0, l = collection.length; i < l; i++) {
audit[method](collection[i]);
}
}
function Audit(audit) {
this.brand = 'axe';
this.application = 'axeAPI';
this.tagExclude = [ 'experimental' ];
this.defaultConfig = audit;
this._init();
}
Audit.prototype._init = function() {
var audit = getDefaultConfiguration(this.defaultConfig);
axe.commons = commons = audit.commons;
this.reporter = audit.reporter;
this.commands = {};
this.rules = [];
this.checks = {};
unpackToObject(audit.rules, this, 'addRule');
unpackToObject(audit.checks, this, 'addCheck');
this.data = {};
this.data.checks = audit.data && audit.data.checks || {};
this.data.rules = audit.data && audit.data.rules || {};
this.data.failureSummaries = audit.data && audit.data.failureSummaries || {};
this.data.incompleteFallbackMessage = audit.data && audit.data.incompleteFallbackMessage || '';
this._constructHelpUrls();
};
Audit.prototype.registerCommand = function(command) {
'use strict';
this.commands[command.id] = command.callback;
};
Audit.prototype.addRule = function(spec) {
'use strict';
if (spec.metadata) {
this.data.rules[spec.id] = spec.metadata;
}
var rule = this.getRule(spec.id);
if (rule) {
rule.configure(spec);
} else {
this.rules.push(new Rule(spec, this));
}
};
Audit.prototype.addCheck = function(spec) {
'use strict';
var metadata = spec.metadata;
if ((typeof metadata === 'undefined' ? 'undefined' : _typeof(metadata)) === 'object') {
this.data.checks[spec.id] = metadata;
if (_typeof(metadata.messages) === 'object') {
Object.keys(metadata.messages).filter(function(prop) {
return metadata.messages.hasOwnProperty(prop) && typeof metadata.messages[prop] === 'string';
}).forEach(function(prop) {
if (metadata.messages[prop].indexOf('function') === 0) {
metadata.messages[prop] = new Function('return ' + metadata.messages[prop] + ';')();
}
});
}
}
if (this.checks[spec.id]) {
this.checks[spec.id].configure(spec);
} else {
this.checks[spec.id] = new Check(spec);
}
};
Audit.prototype.run = function(context, options, resolve, reject) {
'use strict';
this.validateOptions(options);
axe._tree = axe.utils.getFlattenedTree(document.documentElement);
axe._selectCache = [];
var q = axe.utils.queue();
this.rules.forEach(function(rule) {
if (axe.utils.ruleShouldRun(rule, context, options)) {
if (options.performanceTimer) {
var markEnd = 'mark_rule_end_' + rule.id;
var markStart = 'mark_rule_start_' + rule.id;
axe.utils.performanceTimer.mark(markStart);
}
q.defer(function(res, rej) {
rule.run(context, options, function(out) {
if (options.performanceTimer) {
axe.utils.performanceTimer.mark(markEnd);
axe.utils.performanceTimer.measure('rule_' + rule.id, markStart, markEnd);
}
res(out);
}, function(err) {
if (!options.debug) {
var errResult = Object.assign(new RuleResult(rule), {
result: axe.constants.CANTTELL,
description: 'An error occured while running this rule',
message: err.message,
stack: err.stack,
error: err
});
res(errResult);
} else {
rej(err);
}
});
});
}
});
q.then(function(results) {
axe._tree = undefined;
axe._selectCache = undefined;
resolve(results.filter(function(result) {
return !!result;
}));
}).catch(reject);
};
Audit.prototype.after = function(results, options) {
'use strict';
var rules = this.rules;
return results.map(function(ruleResult) {
var rule = axe.utils.findBy(rules, 'id', ruleResult.id);
return rule.after(ruleResult, options);
});
};
Audit.prototype.getRule = function(ruleId) {
return this.rules.find(function(rule) {
return rule.id === ruleId;
});
};
Audit.prototype.validateOptions = function(options) {
'use strict';
var audit = this;
if (_typeof(options.runOnly) === 'object') {
var only = options.runOnly;
if (only.type === 'rule' && Array.isArray(only.value)) {
only.value.forEach(function(ruleId) {
if (!audit.getRule(ruleId)) {
throw new Error('unknown rule `' + ruleId + '` in options.runOnly');
}
});
} else if (Array.isArray(only.value) && only.value.length > 0) {
var tags = [].concat(only.value);
audit.rules.forEach(function(rule) {
var tagPos, i, l;
if (!tags) {
return;
}
for (i = 0, l = rule.tags.length; i < l; i++) {
tagPos = tags.indexOf(rule.tags[i]);
if (tagPos !== -1) {
tags.splice(tagPos, 1);
}
}
});
if (tags.length !== 0) {
throw new Error('could not find tags `' + tags.join('`, `') + '`');
}
}
}
if (_typeof(options.rules) === 'object') {
Object.keys(options.rules).forEach(function(ruleId) {
if (!audit.getRule(ruleId)) {
throw new Error('unknown rule `' + ruleId + '` in options.rules');
}
});
}
return options;
};
Audit.prototype.setBranding = function(branding) {
'use strict';
var previous = {
brand: this.brand,
application: this.application
};
if (branding && branding.hasOwnProperty('brand') && branding.brand && typeof branding.brand === 'string') {
this.brand = branding.brand;
}
if (branding && branding.hasOwnProperty('application') && branding.application && typeof branding.application === 'string') {
this.application = branding.application;
}
this._constructHelpUrls(previous);
};
function getHelpUrl(_ref, ruleId, version) {
var brand = _ref.brand, application = _ref.application;
return axe.constants.helpUrlBase + brand + '/' + (version || axe.version.substring(0, axe.version.lastIndexOf('.'))) + '/' + ruleId + '?application=' + application;
}
Audit.prototype._constructHelpUrls = function() {
var _this = this;
var previous = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;
var version = (axe.version.match(/^[1-9][0-9]*\.[0-9]+/) || [ 'x.y' ])[0];
this.rules.forEach(function(rule) {
if (!_this.data.rules[rule.id]) {
_this.data.rules[rule.id] = {};
}
var metaData = _this.data.rules[rule.id];
if (typeof metaData.helpUrl !== 'string' || previous && metaData.helpUrl === getHelpUrl(previous, rule.id, version)) {
metaData.helpUrl = getHelpUrl(_this, rule.id, version);
}
});
};
Audit.prototype.resetRulesAndChecks = function() {
'use strict';
this._init();
};
'use strict';
function CheckResult(check) {
'use strict';
this.id = check.id;
this.data = null;
this.relatedNodes = [];
this.result = null;
}
'use strict';
function createExecutionContext(spec) {
'use strict';
if (typeof spec === 'string') {
return new Function('return ' + spec + ';')();
}
return spec;
}
function Check(spec) {
if (spec) {
this.id = spec.id;
this.configure(spec);
}
}
Check.prototype.enabled = true;
Check.prototype.run = function(node, options, resolve, reject) {
'use strict';
options = options || {};
var enabled = options.hasOwnProperty('enabled') ? options.enabled : this.enabled, checkOptions = options.options || this.options;
if (enabled) {
var checkResult = new CheckResult(this);
var checkHelper = axe.utils.checkHelper(checkResult, options, resolve, reject);
var result;
try {
result = this.evaluate.call(checkHelper, node.actualNode, checkOptions, node);
} catch (e) {
reject(e);
return;
}
if (!checkHelper.isAsync) {
checkResult.result = result;
setTimeout(function() {
resolve(checkResult);
}, 0);
}
} else {
resolve(null);
}
};
Check.prototype.configure = function(spec) {
var _this = this;
[ 'options', 'enabled' ].filter(function(prop) {
return spec.hasOwnProperty(prop);
}).forEach(function(prop) {
return _this[prop] = spec[prop];
});
[ 'evaluate', 'after' ].filter(function(prop) {
return spec.hasOwnProperty(prop);
}).forEach(function(prop) {
return _this[prop] = createExecutionContext(spec[prop]);
});
};
'use strict';
var _typeof = typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol' ? function(obj) {
return typeof obj;
} : function(obj) {
return obj && typeof Symbol === 'function' && obj.constructor === Symbol && obj !== Symbol.prototype ? 'symbol' : typeof obj;
};
function pushUniqueFrame(collection, frame) {
'use strict';
if (axe.utils.isHidden(frame)) {
return;
}
var fr = axe.utils.findBy(collection, 'node', frame);
if (!fr) {
collection.push({
node: frame,
include: [],
exclude: []
});
}
}
function pushUniqueFrameSelector(context, type, selectorArray) {
'use strict';
context.frames = context.frames || [];
var result, frame;
var frames = document.querySelectorAll(selectorArray.shift());
frameloop: for (var i = 0, l = frames.length; i < l; i++) {
frame = frames[i];
for (var j = 0, l2 = context.frames.length; j < l2; j++) {
if (context.frames[j].node === frame) {
context.frames[j][type].push(selectorArray);
break frameloop;
}
}
result = {
node: frame,
include: [],
exclude: []
};
if (selectorArray) {
result[type].push(selectorArray);
}
context.frames.push(result);
}
}
function normalizeContext(context) {
'use strict';
if (context && (typeof context === 'undefined' ? 'undefined' : _typeof(context)) === 'object' || context instanceof NodeList) {
if (context instanceof Node) {
return {
include: [ context ],
exclude: []
};
}
if (context.hasOwnProperty('include') || context.hasOwnProperty('exclude')) {
return {
include: context.include && +context.include.length ? context.include : [ document ],
exclude: context.exclude || []
};
}
if (context.length === +context.length) {
return {
include: context,
exclude: []
};
}
}
if (typeof context === 'string') {
return {
include: [ context ],
exclude: []
};
}
return {
include: [ document ],
exclude: []
};
}
function parseSelectorArray(context, type) {
'use strict';
var item, result = [], nodeList;
for (var i = 0, l = context[type].length; i < l; i++) {
item = context[type][i];
if (typeof item === 'string') {
nodeList = Array.from(document.querySelectorAll(item));
result = result.concat(nodeList.map(function(node) {
return axe.utils.getFlattenedTree(node)[0];
}));
break;
} else if (item && item.length && !(item instanceof Node)) {
if (item.length > 1) {
pushUniqueFrameSelector(context, type, item);
} else {
nodeList = Array.from(document.querySelectorAll(item[0]));
result = result.concat(nodeList.map(function(node) {
return axe.utils.getFlattenedTree(node)[0];
}));
}
} else if (item instanceof Node) {
result.push(axe.utils.getFlattenedTree(item)[0]);
}
}
return result.filter(function(r) {
return r;
});
}
function validateContext(context) {
'use strict';
if (context.include.length === 0) {
if (context.frames.length === 0) {
var env = axe.utils.respondable.isInFrame() ? 'frame' : 'page';
return new Error('No elements found for include in ' + env + ' Context');
}
context.frames.forEach(function(frame, i) {
if (frame.include.length === 0) {
return new Error('No elements found for include in Context of frame ' + i);
}
});
}
}
function Context(spec) {
'use strict';
var self = this;
this.frames = [];
this.initiator = spec && typeof spec.initiator === 'boolean' ? spec.initiator : true;
this.page = false;
spec = normalizeContext(spec);
this.exclude = spec.exclude;
this.include = spec.include;
this.include = parseSelectorArray(this, 'include');
this.exclude = parseSelectorArray(this, 'exclude');
axe.utils.select('frame, iframe', this).forEach(function(frame) {
if (isNodeInContext(frame, self)) {
pushUniqueFrame(self.frames, frame.actualNode);
}
});
if (this.include.length === 1 && this.include[0].actualNode === document.documentElement) {
this.page = true;
}
var err = validateContext(this);
if (err instanceof Error) {
throw err;
}
}
'use strict';
function RuleResult(rule) {
'use strict';
this.id = rule.id;
this.result = axe.constants.NA;
this.pageLevel = rule.pageLevel;
this.impact = null;
this.nodes = [];
}
'use strict';
function Rule(spec, parentAudit) {
'use strict';
this._audit = parentAudit;
this.id = spec.id;
this.selector = spec.selector || '*';
this.excludeHidden = typeof spec.excludeHidden === 'boolean' ? spec.excludeHidden : true;
this.enabled = typeof spec.enabled === 'boolean' ? spec.enabled : true;
this.pageLevel = typeof spec.pageLevel === 'boolean' ? spec.pageLevel : false;
this.any = spec.any || [];
this.all = spec.all || [];
this.none = spec.none || [];
this.tags = spec.tags || [];
if (spec.matches) {
this.matches = createExecutionContext(spec.matches);
}
}
Rule.prototype.matches = function() {
'use strict';
return true;
};
Rule.prototype.gather = function(context) {
'use strict';
var elements = axe.utils.select(this.selector, context);
if (this.excludeHidden) {
return elements.filter(function(element) {
return !axe.utils.isHidden(element.actualNode);
});
}
return elements;
};
Rule.prototype.runChecks = function(type, node, options, resolve, reject) {
'use strict';
var self = this;
var checkQueue = axe.utils.queue();
this[type].forEach(function(c) {
var check = self._audit.checks[c.id || c];
var option = axe.utils.getCheckOption(check, self.id, options);
checkQueue.defer(function(res, rej) {
check.run(node, option, res, rej);
});
});
checkQueue.then(function(results) {
results = results.filter(function(check) {
return check;
});
resolve({
type: type,
results: results
});
}).catch(reject);
};
Rule.prototype.run = function(context, options, resolve, reject) {
var _this = this;
var q = axe.utils.queue();
var ruleResult = new RuleResult(this);
var markStart = 'mark_runchecks_start_' + this.id;
var markEnd = 'mark_runchecks_end_' + this.id;
var nodes = void 0;
try {
nodes = this.gather(context).filter(function(node) {
return _this.matches(node.actualNode, node);
});
} catch (error) {
reject(new SupportError({
cause: error,
ruleId: this.id
}));
return;
}
if (options.performanceTimer) {
axe.log('gather (', nodes.length, '):', axe.utils.performanceTimer.timeElapsed() + 'ms');
axe.utils.performanceTimer.mark(markStart);
}
nodes.forEach(function(node) {
q.defer(function(resolveNode, rejectNode) {
var checkQueue = axe.utils.queue();
checkQueue.defer(function(res, rej) {
_this.runChecks('any', node, options, res, rej);
});
checkQueue.defer(function(res, rej) {
_this.runChecks('all', node, options, res, rej);
});
checkQueue.defer(function(res, rej) {
_this.runChecks('none', node, options, res, rej);
});
checkQueue.then(function(results) {
if (results.length) {
var hasResults = false, result = {};
results.forEach(function(r) {
var res = r.results.filter(function(result) {
return result;
});
result[r.type] = res;
if (res.length) {
hasResults = true;
}
});
if (hasResults) {
result.node = new axe.utils.DqElement(node.actualNode, options);
ruleResult.nodes.push(result);
}
}
resolveNode();
}).catch(function(err) {
return rejectNode(err);
});
});
});
if (options.performanceTimer) {
axe.utils.performanceTimer.mark(markEnd);
axe.utils.performanceTimer.measure('runchecks_' + this.id, markStart, markEnd);
}
q.then(function() {
return resolve(ruleResult);
}).catch(function(error) {
return reject(error);
});
};
function findAfterChecks(rule) {
'use strict';
return axe.utils.getAllChecks(rule).map(function(c) {
var check = rule._audit.checks[c.id || c];
return check && typeof check.after === 'function' ? check : null;
}).filter(Boolean);
}
function findCheckResults(nodes, checkID) {
'use strict';
var checkResults = [];
nodes.forEach(function(nodeResult) {
var checks = axe.utils.getAllChecks(nodeResult);
checks.forEach(function(checkResult) {
if (checkResult.id === checkID) {
checkResults.push(checkResult);
}
});
});
return checkResults;
}
function filterChecks(checks) {
'use strict';
return checks.filter(function(check) {
return check.filtered !== true;
});
}
function sanitizeNodes(result) {
'use strict';
var checkTypes = [ 'any', 'all', 'none' ];
var nodes = result.nodes.filter(function(detail) {
var length = 0;
checkTypes.forEach(function(type) {
detail[type] = filterChecks(detail[type]);
length += detail[type].length;
});
return length > 0;
});
if (result.pageLevel && nodes.length) {
nodes = [ nodes.reduce(function(a, b) {
if (a) {
checkTypes.forEach(function(type) {
a[type].push.apply(a[type], b[type]);
});
return a;
}
}) ];
}
return nodes;
}
Rule.prototype.after = function(result, options) {
'use strict';
var afterChecks = findAfterChecks(this);
var ruleID = this.id;
afterChecks.forEach(function(check) {
var beforeResults = findCheckResults(result.nodes, check.id);
var option = axe.utils.getCheckOption(check, ruleID, options);
var afterResults = check.after(beforeResults, option);
beforeResults.forEach(function(item) {
if (afterResults.indexOf(item) === -1) {
item.filtered = true;
}
});
});
result.nodes = sanitizeNodes(result);
return result;
};
Rule.prototype.configure = function(spec) {
'use strict';
if (spec.hasOwnProperty('selector')) {
this.selector = spec.selector;
}
if (spec.hasOwnProperty('excludeHidden')) {
this.excludeHidden = typeof spec.excludeHidden === 'boolean' ? spec.excludeHidden : true;
}
if (spec.hasOwnProperty('enabled')) {
this.enabled = typeof spec.enabled === 'boolean' ? spec.enabled : true;
}
if (spec.hasOwnProperty('pageLevel')) {
this.pageLevel = typeof spec.pageLevel === 'boolean' ? spec.pageLevel : false;
}
if (spec.hasOwnProperty('any')) {
this.any = spec.any;
}
if (spec.hasOwnProperty('all')) {
this.all = spec.all;
}
if (spec.hasOwnProperty('none')) {
this.none = spec.none;
}
if (spec.hasOwnProperty('tags')) {
this.tags = spec.tags;
}
if (spec.hasOwnProperty('matches')) {
if (typeof spec.matches === 'string') {
this.matches = new Function('return ' + spec.matches + ';')();
} else {
this.matches = spec.matches;
}
}
};
'use strict';
(function(axe) {
var definitions = [ {
name: 'NA',
value: 'inapplicable',
priority: 0,
group: 'inapplicable'
}, {
name: 'PASS',
value: 'passed',
priority: 1,
group: 'passes'
}, {
name: 'CANTTELL',
value: 'cantTell',
priority: 2,
group: 'incomplete'
}, {
name: 'FAIL',
value: 'failed',
priority: 3,
group: 'violations'
} ];
var constants = {
helpUrlBase: 'https://dequeuniversity.com/rules/',
results: [],
resultGroups: [],
resultGroupMap: {},
impact: Object.freeze([ 'minor', 'moderate', 'serious', 'critical' ])
};
definitions.forEach(function(definition) {
var name = definition.name;
var value = definition.value;
var priority = definition.priority;
var group = definition.group;
constants[name] = value;
constants[name + '_PRIO'] = priority;
constants[name + '_GROUP'] = group;
constants.results[priority] = value;
constants.resultGroups[priority] = group;
constants.resultGroupMap[value] = group;
});
Object.freeze(constants.results);
Object.freeze(constants.resultGroups);
Object.freeze(constants.resultGroupMap);
Object.freeze(constants);
Object.defineProperty(axe, 'constants', {
value: constants,
enumerable: true,
configurable: false,
writable: false
});
})(axe);
'use strict';
var _typeof = typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol' ? function(obj) {
return typeof obj;
} : function(obj) {
return obj && typeof Symbol === 'function' && obj.constructor === Symbol && obj !== Symbol.prototype ? 'symbol' : typeof obj;
};
axe.log = function() {
'use strict';
if ((typeof console === 'undefined' ? 'undefined' : _typeof(console)) === 'object' && console.log) {
Function.prototype.apply.call(console.log, console, arguments);
}
};
'use strict';
var _typeof = typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol' ? function(obj) {
return typeof obj;
} : function(obj) {
return obj && typeof Symbol === 'function' && obj.constructor === Symbol && obj !== Symbol.prototype ? 'symbol' : typeof obj;
};
axe.a11yCheck = function(context, options, callback) {
'use strict';
if (typeof options === 'function') {
callback = options;
options = {};
}
if (!options || (typeof options === 'undefined' ? 'undefined' : _typeof(options)) !== 'object') {
options = {};
}
var audit = axe._audit;
if (!audit) {
throw new Error('No audit configured');
}
options.reporter = options.reporter || audit.reporter || 'v2';
if (options.performanceTimer) {
axe.utils.performanceTimer.start();
}
var reporter = axe.getReporter(options.reporter);
axe._runRules(context, options, function(results) {
var res = reporter(results, options, callback);
if (res !== undefined) {
if (options.performanceTimer) {
axe.utils.performanceTimer.end();
}
callback(res);
}
}, axe.log);
};
'use strict';
function cleanupPlugins(resolve, reject) {
'use strict';
if (!axe._audit) {
throw new Error('No audit configured');
}
var q = axe.utils.queue();
var cleanupErrors = [];
Object.keys(axe.plugins).forEach(function(key) {
q.defer(function(res) {
var rej = function rej(err) {
cleanupErrors.push(err);
res();
};
try {
axe.plugins[key].cleanup(res, rej);
} catch (err) {
rej(err);
}
});
});
var flattenedTree = axe.utils.getFlattenedTree(document.body);
axe.utils.querySelectorAll(flattenedTree, 'iframe, frame').forEach(function(node) {
q.defer(function(res, rej) {
return axe.utils.sendCommandToFrame(node.actualNode, {
command: 'cleanup-plugin'
}, res, rej);
});
});
q.then(function(results) {
if (cleanupErrors.length === 0) {
resolve(results);
} else {
reject(cleanupErrors);
}
}).catch(reject);
}
axe.cleanup = cleanupPlugins;
'use strict';
function configureChecksRulesAndBranding(spec) {
'use strict';
var audit;
audit = axe._audit;
if (!audit) {
throw new Error('No audit configured');
}
if (spec.reporter && (typeof spec.reporter === 'function' || reporters[spec.reporter])) {
audit.reporter = spec.reporter;
}
if (spec.checks) {
spec.checks.forEach(function(check) {
audit.addCheck(check);
});
}
if (spec.rules) {
spec.rules.forEach(function(rule) {
audit.addRule(rule);
});
}
if (typeof spec.branding !== 'undefined') {
audit.setBranding(spec.branding);
} else {
audit._constructHelpUrls();
}
if (spec.tagExclude) {
audit.tagExclude = spec.tagExclude;
}
}
axe.configure = configureChecksRulesAndBranding;
'use strict';
axe.getRules = function(tags) {
'use strict';
tags = tags || [];
var matchingRules = !tags.length ? axe._audit.rules : axe._audit.rules.filter(function(item) {
return !!tags.filter(function(tag) {
return item.tags.indexOf(tag) !== -1;
}).length;
});
var ruleData = axe._audit.data.rules || {};
return matchingRules.map(function(matchingRule) {
var rd = ruleData[matchingRule.id] || {};
return {
ruleId: matchingRule.id,
description: rd.description,
help: rd.help,
helpUrl: rd.helpUrl,
tags: matchingRule.tags
};
});
};
'use strict';
function runCommand(data, keepalive, callback) {
'use strict';
var resolve = callback;
var reject = function reject(err) {
if (err instanceof Error === false) {
err = new Error(err);
}
callback(err);
};
var context = data && data.context || {};
if (context.hasOwnProperty('include') && !context.include.length) {
context.include = [ document ];
}
var options = data && data.options || {};
switch (data.command) {
case 'rules':
return runRules(context, options, resolve, reject);
case 'cleanup-plugin':
return cleanupPlugins(resolve, reject);
default:
if (axe._audit && axe._audit.commands && axe._audit.commands[data.command]) {
return axe._audit.commands[data.command](data, callback);
}
}
}
axe._load = function(audit) {
'use strict';
axe.utils.respondable.subscribe('axe.ping', function(data, keepalive, respond) {
respond({
axe: true
});
});
axe.utils.respondable.subscribe('axe.start', runCommand);
axe._audit = new Audit(audit);
};
'use strict';
var axe = axe || {};
axe.plugins = {};
function Plugin(spec) {
'use strict';
this._run = spec.run;
this._collect = spec.collect;
this._registry = {};
spec.commands.forEach(function(command) {
axe._audit.registerCommand(command);
});
}
Plugin.prototype.run = function() {
'use strict';
return this._run.apply(this, arguments);
};
Plugin.prototype.collect = function() {
'use strict';
return this._collect.apply(this, arguments);
};
Plugin.prototype.cleanup = function(done) {
'use strict';
var q = axe.utils.queue();
var that = this;
Object.keys(this._registry).forEach(function(key) {
q.defer(function(done) {
that._registry[key].cleanup(done);
});
});
q.then(function() {
done();
});
};
Plugin.prototype.add = function(impl) {
'use strict';
this._registry[impl.id] = impl;
};
axe.registerPlugin = function(plugin) {
'use strict';
axe.plugins[plugin.id] = new Plugin(plugin);
};
'use strict';
var reporters = {};
var defaultReporter;
axe.getReporter = function(reporter) {
'use strict';
if (typeof reporter === 'string' && reporters[reporter]) {
return reporters[reporter];
}
if (typeof reporter === 'function') {
return reporter;
}
return defaultReporter;
};
axe.addReporter = function registerReporter(name, cb, isDefault) {
'use strict';
reporters[name] = cb;
if (isDefault) {
defaultReporter = cb;
}
};
'use strict';
function resetConfiguration() {
'use strict';
var audit = axe._audit;
if (!audit) {
throw new Error('No audit configured');
}
audit.resetRulesAndChecks();
}
axe.reset = resetConfiguration;
'use strict';
function runRules(context, options, resolve, reject) {
'use strict';
try {
context = new Context(context);
} catch (e) {
return reject(e);
}
var q = axe.utils.queue();
var audit = axe._audit;
if (options.performanceTimer) {
axe.utils.performanceTimer.auditStart();
}
if (context.frames.length && options.iframes !== false) {
q.defer(function(res, rej) {
axe.utils.collectResultsFromFrames(context, options, 'rules', null, res, rej);
});
}
var scrollState = void 0;
q.defer(function(res, rej) {
if (options.restoreScroll) {
scrollState = axe.utils.getScrollState();
}
audit.run(context, options, res, rej);
});
q.then(function(data) {
try {
if (scrollState) {
axe.utils.setScrollState(scrollState);
}
if (options.performanceTimer) {
axe.utils.performanceTimer.auditEnd();
}
var results = axe.utils.mergeResults(data.map(function(d) {
return {
results: d
};
}));
if (context.initiator) {
results = audit.after(results, options);
results.forEach(axe.utils.publishMetaData);
results = results.map(axe.utils.finalizeRuleResult);
}
try {
resolve(results);
} catch (e) {
axe.log(e);
}
} catch (e) {
reject(e);
}
}).catch(reject);
}
axe._runRules = runRules;
'use strict';
var _typeof = typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol' ? function(obj) {
return typeof obj;
} : function(obj) {
return obj && typeof Symbol === 'function' && obj.constructor === Symbol && obj !== Symbol.prototype ? 'symbol' : typeof obj;
};
function isContext(potential) {
'use strict';
switch (true) {
case typeof potential === 'string':
case Array.isArray(potential):
case Node && potential instanceof Node:
case NodeList && potential instanceof NodeList:
return true;
case (typeof potential === 'undefined' ? 'undefined' : _typeof(potential)) !== 'object':
return false;
case potential.include !== undefined:
case potential.exclude !== undefined:
case typeof potential.length === 'number':
return true;
default:
return false;
}
}
var noop = function noop() {};
function normalizeRunParams(context, options, callback) {
'use strict';
var typeErr = new TypeError('axe.run arguments are invalid');
if (!isContext(context)) {
if (callback !== undefined) {
throw typeErr;
}
callback = options;
options = context;
context = document;
}
if ((typeof options === 'undefined' ? 'undefined' : _typeof(options)) !== 'object') {
if (callback !== undefined) {
throw typeErr;
}
callback = options;
options = {};
}
if (typeof callback !== 'function' && callback !== undefined) {
throw typeErr;
}
return {
context: context,
options: options,
callback: callback || noop
};
}
axe.run = function(context, options, callback) {
'use strict';
if (!axe._audit) {
throw new Error('No audit configured');
}
var args = normalizeRunParams(context, options, callback);
context = args.context;
options = args.options;
callback = args.callback;
options.reporter = options.reporter || axe._audit.reporter || 'v1';
if (options.performanceTimer) {
axe.utils.performanceTimer.start();
}
var p = void 0;
var reject = noop;
var resolve = noop;
if (window.Promise && callback === noop) {
p = new Promise(function(_resolve, _reject) {
reject = _reject;
resolve = _resolve;
});
}
axe._runRules(context, options, function(rawResults) {
var respond = function respond(results) {
try {
callback(null, results);
} catch (e) {
axe.log(e);
}
resolve(results);
};
if (options.performanceTimer) {
axe.utils.performanceTimer.end();
}
try {
var reporter = axe.getReporter(options.reporter);
var results = reporter(rawResults, options, respond);
if (results !== undefined) {
respond(results);
}
} catch (err) {
callback(err);
reject(err);
}
}, function(err) {
callback(err);
reject(err);
});
return p;
};
'use strict';
helpers.failureSummary = function failureSummary(nodeData) {
'use strict';
var failingChecks = {};
failingChecks.none = nodeData.none.concat(nodeData.all);
failingChecks.any = nodeData.any;
return Object.keys(failingChecks).map(function(key) {
if (!failingChecks[key].length) {
return;
}
var sum = axe._audit.data.failureSummaries[key];
if (sum && typeof sum.failureMessage === 'function') {
return sum.failureMessage(failingChecks[key].map(function(check) {
return check.message || '';
}));
}
}).filter(function(i) {
return i !== undefined;
}).join('\n\n');
};
'use strict';
helpers.incompleteFallbackMessage = function incompleteFallbackMessage() {
'use strict';
return axe._audit.data.incompleteFallbackMessage();
};
'use strict';
var _typeof = typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol' ? function(obj) {
return typeof obj;
} : function(obj) {
return obj && typeof Symbol === 'function' && obj.constructor === Symbol && obj !== Symbol.prototype ? 'symbol' : typeof obj;
};
function normalizeRelatedNodes(node, options) {
'use strict';
[ 'any', 'all', 'none' ].forEach(function(type) {
if (!Array.isArray(node[type])) {
return;
}
node[type].filter(function(checkRes) {
return Array.isArray(checkRes.relatedNodes);
}).forEach(function(checkRes) {
checkRes.relatedNodes = checkRes.relatedNodes.map(function(relatedNode) {
var res = {
html: relatedNode.source
};
if (options.elementRef && !relatedNode.fromFrame) {
res.element = relatedNode.element;
}
if (options.selectors !== false || relatedNode.fromFrame) {
res.target = relatedNode.selector;
}
if (options.xpath) {
res.xpath = relatedNode.xpath;
}
return res;
});
});
});
}
var resultKeys = axe.constants.resultGroups;
helpers.processAggregate = function(results, options) {
var resultObject = axe.utils.aggregateResult(results);
resultObject.timestamp = new Date().toISOString();
resultObject.url = window.location.href;
resultKeys.forEach(function(key) {
if (options.resultTypes && !options.resultTypes.includes(key)) {
(resultObject[key] || []).forEach(function(ruleResult) {
if (Array.isArray(ruleResult.nodes) && ruleResult.nodes.length > 0) {
ruleResult.nodes = [ ruleResult.nodes[0] ];
}
});
}
resultObject[key] = (resultObject[key] || []).map(function(ruleResult) {
ruleResult = Object.assign({}, ruleResult);
if (Array.isArray(ruleResult.nodes) && ruleResult.nodes.length > 0) {
ruleResult.nodes = ruleResult.nodes.map(function(subResult) {
if (_typeof(subResult.node) === 'object') {
subResult.html = subResult.node.source;
if (options.elementRef && !subResult.node.fromFrame) {
subResult.element = subResult.node.element;
}
if (options.selectors !== false || subResult.node.fromFrame) {
subResult.target = subResult.node.selector;
}
if (options.xpath) {
subResult.xpath = subResult.node.xpath;
}
}
delete subResult.result;
delete subResult.node;
normalizeRelatedNodes(subResult, options);
return subResult;
});
}
resultKeys.forEach(function(key) {
return delete ruleResult[key];
});
delete ruleResult.pageLevel;
delete ruleResult.result;
return ruleResult;
});
});
return resultObject;
};
'use strict';
axe.addReporter('na', function(results, options, callback) {
'use strict';
if (typeof options === 'function') {
callback = options;
options = {};
}
var out = helpers.processAggregate(results, options);
callback({
violations: out.violations,
passes: out.passes,
incomplete: out.incomplete,
inapplicable: out.inapplicable,
timestamp: out.timestamp,
url: out.url
});
});
'use strict';
axe.addReporter('no-passes', function(results, options, callback) {
'use strict';
if (typeof options === 'function') {
callback = options;
options = {};
}
options.resultTypes = [ 'violations' ];
var out = helpers.processAggregate(results, options);
callback({
violations: out.violations,
timestamp: out.timestamp,
url: out.url
});
});
'use strict';
axe.addReporter('raw', function(results, options, callback) {
'use strict';
if (typeof options === 'function') {
callback = options;
options = {};
}
callback(results);
});
'use strict';
axe.addReporter('v1', function(results, options, callback) {
'use strict';
if (typeof options === 'function') {
callback = options;
options = {};
}
var out = helpers.processAggregate(results, options);
out.violations.forEach(function(result) {
return result.nodes.forEach(function(nodeResult) {
nodeResult.failureSummary = helpers.failureSummary(nodeResult);
});
});
callback({
violations: out.violations,
passes: out.passes,
incomplete: out.incomplete,
inapplicable: out.inapplicable,
timestamp: out.timestamp,
url: out.url
});
});
'use strict';
axe.addReporter('v2', function(results, options, callback) {
'use strict';
if (typeof options === 'function') {
callback = options;
options = {};
}
var out = helpers.processAggregate(results, options);
callback({
violations: out.violations,
passes: out.passes,
incomplete: out.incomplete,
inapplicable: out.inapplicable,
timestamp: out.timestamp,
url: out.url
});
}, true);
'use strict';
axe.utils.aggregate = function(map, values, initial) {
values = values.slice();
if (initial) {
values.push(initial);
}
var sorting = values.map(function(val) {
return map.indexOf(val);
}).sort();
return map[sorting.pop()];
};
'use strict';
var _axe$constants = axe.constants, CANTTELL_PRIO = _axe$constants.CANTTELL_PRIO, FAIL_PRIO = _axe$constants.FAIL_PRIO;
var checkMap = [];
checkMap[axe.constants.PASS_PRIO] = true;
checkMap[axe.constants.CANTTELL_PRIO] = null;
checkMap[axe.constants.FAIL_PRIO] = false;
var checkTypes = [ 'any', 'all', 'none' ];
function anyAllNone(obj, functor) {
return checkTypes.reduce(function(out, type) {
out[type] = (obj[type] || []).map(function(val) {
return functor(val, type);
});
return out;
}, {});
}
axe.utils.aggregateChecks = function(nodeResOriginal) {
var nodeResult = Object.assign({}, nodeResOriginal);
anyAllNone(nodeResult, function(check, type) {
var i = checkMap.indexOf(check.result);
check.priority = i !== -1 ? i : axe.constants.CANTTELL_PRIO;
if (type === 'none') {
check.priority = 4 - check.priority;
}
});
var priorities = {
all: nodeResult.all.reduce(function(a, b) {
return Math.max(a, b.priority);
}, 0),
none: nodeResult.none.reduce(function(a, b) {
return Math.max(a, b.priority);
}, 0),
any: nodeResult.any.reduce(function(a, b) {
return Math.min(a, b.priority);
}, 4) % 4
};
nodeResult.priority = Math.max(priorities.all, priorities.none, priorities.any);
var impacts = [];
checkTypes.forEach(function(type) {
nodeResult[type] = nodeResult[type].filter(function(check) {
return check.priority === nodeResult.priority && check.priority === priorities[type];
});
nodeResult[type].forEach(function(check) {
return impacts.push(check.impact);
});
});
if ([ CANTTELL_PRIO, FAIL_PRIO ].includes(nodeResult.priority)) {
nodeResult.impact = axe.utils.aggregate(axe.constants.impact, impacts);
} else {
nodeResult.impact = null;
}
anyAllNone(nodeResult, function(c) {
delete c.result;
delete c.priority;
});
nodeResult.result = axe.constants.results[nodeResult.priority];
delete nodeResult.priority;
return nodeResult;
};
'use strict';
(function() {
axe.utils.aggregateNodeResults = function(nodeResults) {
var ruleResult = {};
nodeResults = nodeResults.map(function(nodeResult) {
if (nodeResult.any && nodeResult.all && nodeResult.none) {
return axe.utils.aggregateChecks(nodeResult);
} else if (Array.isArray(nodeResult.node)) {
return axe.utils.finalizeRuleResult(nodeResult);
} else {
throw new TypeError('Invalid Result type');
}
});
if (nodeResults && nodeResults.length) {
var resultList = nodeResults.map(function(node) {
return node.result;
});
ruleResult.result = axe.utils.aggregate(axe.constants.results, resultList, ruleResult.result);
} else {
ruleResult.result = 'inapplicable';
}
axe.constants.resultGroups.forEach(function(group) {
return ruleResult[group] = [];
});
nodeResults.forEach(function(nodeResult) {
var groupName = axe.constants.resultGroupMap[nodeResult.result];
ruleResult[groupName].push(nodeResult);
});
var impactGroup = axe.constants.FAIL_GROUP;
if (ruleResult[impactGroup].length === 0) {
impactGroup = axe.constants.CANTTELL_GROUP;
}
if (ruleResult[impactGroup].length > 0) {
var impactList = ruleResult[impactGroup].map(function(failure) {
return failure.impact;
});
ruleResult.impact = axe.utils.aggregate(axe.constants.impact, impactList) || null;
} else {
ruleResult.impact = null;
}
return ruleResult;
};
})();
'use strict';
function copyToGroup(resultObject, subResult, group) {
var resultCopy = Object.assign({}, subResult);
resultCopy.nodes = (resultCopy[group] || []).concat();
axe.constants.resultGroups.forEach(function(group) {
delete resultCopy[group];
});
resultObject[group].push(resultCopy);
}
axe.utils.aggregateResult = function(results) {
var resultObject = {};
axe.constants.resultGroups.forEach(function(groupName) {
return resultObject[groupName] = [];
});
results.forEach(function(subResult) {
if (subResult.error) {
copyToGroup(resultObject, subResult, axe.constants.CANTTELL_GROUP);
} else if (subResult.result === axe.constants.NA) {
copyToGroup(resultObject, subResult, axe.constants.NA_GROUP);
} else {
axe.constants.resultGroups.forEach(function(group) {
if (Array.isArray(subResult[group]) && subResult[group].length > 0) {
copyToGroup(resultObject, subResult, group);
}
});
}
});
return resultObject;
};
'use strict';
function areStylesSet(el, styles, stopAt) {
'use strict';
var styl = window.getComputedStyle(el, null);
var set = false;
if (!styl) {
return false;
}
styles.forEach(function(att) {
if (styl.getPropertyValue(att.property) === att.value) {
set = true;
}
});
if (set) {
return true;
}
if (el.nodeName.toUpperCase() === stopAt.toUpperCase() || !el.parentNode) {
return false;
}
return areStylesSet(el.parentNode, styles, stopAt);
}
axe.utils.areStylesSet = areStylesSet;
'use strict';
axe.utils.checkHelper = function checkHelper(checkResult, options, resolve, reject) {
'use strict';
return {
isAsync: false,
async: function async() {
this.isAsync = true;
return function(result) {
if (result instanceof Error === false) {
checkResult.result = result;
resolve(checkResult);
} else {
reject(result);
}
};
},
data: function data(_data) {
checkResult.data = _data;
},
relatedNodes: function relatedNodes(nodes) {
nodes = nodes instanceof Node ? [ nodes ] : axe.utils.toArray(nodes);
checkResult.relatedNodes = nodes.map(function(element) {
return new axe.utils.DqElement(element, options);
});
}
};
};
'use strict';
var _typeof = typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol' ? function(obj) {
return typeof obj;
} : function(obj) {
return obj && typeof Symbol === 'function' && obj.constructor === Symbol && obj !== Symbol.prototype ? 'symbol' : typeof obj;
};
axe.utils.clone = function(obj) {
'use strict';
var index, length, out = obj;
if (obj !== null && (typeof obj === 'undefined' ? 'undefined' : _typeof(obj)) === 'object') {
if (Array.isArray(obj)) {
out = [];
for (index = 0, length = obj.length; index < length; index++) {
out[index] = axe.utils.clone(obj[index]);
}
} else {
out = {};
for (index in obj) {
out[index] = axe.utils.clone(obj[index]);
}
}
}
return out;
};
'use strict';
function err(message, node) {
'use strict';
return new Error(message + ': ' + axe.utils.getSelector(node));
}
axe.utils.sendCommandToFrame = function(node, parameters, resolve, reject) {
'use strict';
var win = node.contentWindow;
if (!win) {
axe.log('Frame does not have a content window', node);
resolve(null);
return;
}
var timeout = setTimeout(function() {
timeout = setTimeout(function() {
var errMsg = err('No response from frame', node);
if (!parameters.debug) {
axe.log(errMsg);
resolve(null);
} else {
reject(errMsg);
}
}, 0);
}, 500);
axe.utils.respondable(win, 'axe.ping', null, undefined, function() {
clearTimeout(timeout);
var frameWaitTime = parameters.options && parameters.options.frameWaitTime || 6e4;
timeout = setTimeout(function() {
reject(err('Axe in frame timed out', node));
}, frameWaitTime);
axe.utils.respondable(win, 'axe.start', parameters, undefined, function(data) {
clearTimeout(timeout);
if (data instanceof Error === false) {
resolve(data);
} else {
reject(data);
}
});
});
};
function collectResultsFromFrames(context, options, command, parameter, resolve, reject) {
'use strict';
var q = axe.utils.queue();
var frames = context.frames;
frames.forEach(function(frame) {
var params = {
options: options,
command: command,
parameter: parameter,
context: {
initiator: false,
page: context.page,
include: frame.include || [],
exclude: frame.exclude || []
}
};
q.defer(function(res, rej) {
var node = frame.node;
axe.utils.sendCommandToFrame(node, params, function(data) {
if (data) {
return res({
results: data,
frameElement: node,
frame: axe.utils.getSelector(node)
});
}
res(null);
}, rej);
});
});
q.then(function(data) {
resolve(axe.utils.mergeResults(data, options));
}).catch(reject);
}
axe.utils.collectResultsFromFrames = collectResultsFromFrames;
'use strict';
axe.utils.contains = function(node, otherNode) {
'use strict';
function containsShadowChild(node, otherNode) {
if (node.shadowId === otherNode.shadowId) {
return true;
}
return !!node.children.find(function(child) {
return containsShadowChild(child, otherNode);
});
}
if (node.shadowId || otherNode.shadowId) {
return containsShadowChild(node, otherNode);
}
if (typeof node.actualNode.contains === 'function') {
return node.actualNode.contains(otherNode.actualNode);
}
return !!(node.actualNode.compareDocumentPosition(otherNode.actualNode) & 16);
};
'use strict';
(function(axe) {
/*!
* The copyright below covers the code within this function block only
*
* Copyright (c) 2013 Dulin Marat
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
function CssSelectorParser() {
this.pseudos = {};
this.attrEqualityMods = {};
this.ruleNestingOperators = {};
this.substitutesEnabled = false;
}
CssSelectorParser.prototype.registerSelectorPseudos = function(name) {
for (var j = 0, len = arguments.length; j < len; j++) {
name = arguments[j];
this.pseudos[name] = 'selector';
}
return this;
};
CssSelectorParser.prototype.unregisterSelectorPseudos = function(name) {
for (var j = 0, len = arguments.length; j < len; j++) {
name = arguments[j];
delete this.pseudos[name];
}
return this;
};
CssSelectorParser.prototype.registerNumericPseudos = function(name) {
for (var j = 0, len = arguments.length; j < len; j++) {
name = arguments[j];
this.pseudos[name] = 'numeric';
}
return this;
};
CssSelectorParser.prototype.unregisterNumericPseudos = function(name) {
for (var j = 0, len = arguments.length; j < len; j++) {
name = arguments[j];
delete this.pseudos[name];
}
return this;
};
CssSelectorParser.prototype.registerNestingOperators = function(operator) {
for (var j = 0, len = arguments.length; j < len; j++) {
operator = arguments[j];
this.ruleNestingOperators[operator] = true;
}
return this;
};
CssSelectorParser.prototype.unregisterNestingOperators = function(operator) {
for (var j = 0, len = arguments.length; j < len; j++) {
operator = arguments[j];
delete this.ruleNestingOperators[operator];
}
return this;
};
CssSelectorParser.prototype.registerAttrEqualityMods = function(mod) {
for (var j = 0, len = arguments.length; j < len; j++) {
mod = arguments[j];
this.attrEqualityMods[mod] = true;
}
return this;
};
CssSelectorParser.prototype.unregisterAttrEqualityMods = function(mod) {
for (var j = 0, len = arguments.length; j < len; j++) {
mod = arguments[j];
delete this.attrEqualityMods[mod];
}
return this;
};
CssSelectorParser.prototype.enableSubstitutes = function() {
this.substitutesEnabled = true;
return this;
};
CssSelectorParser.prototype.disableSubstitutes = function() {
this.substitutesEnabled = false;
return this;
};
function isIdentStart(c) {
return c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z' || c === '-' || c === '_';
}
function isIdent(c) {
return c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z' || c >= '0' && c <= '9' || c === '-' || c === '_';
}
function isHex(c) {
return c >= 'a' && c <= 'f' || c >= 'A' && c <= 'F' || c >= '0' && c <= '9';
}
function isDecimal(c) {
return c >= '0' && c <= '9';
}
function isAttrMatchOperator(chr) {
return chr === '=' || chr === '^' || chr === '$' || chr === '*' || chr === '~';
}
var identSpecialChars = {
'!': true,
'"': true,
'#': true,
$: true,
'%': true,
'&': true,
'\'': true,
'(': true,
')': true,
'*': true,
'+': true,
',': true,
'.': true,
'/': true,
';': true,
'<': true,
'=': true,
'>': true,
'?': true,
'@': true,
'[': true,
'\\': true,
']': true,
'^': true,
'`': true,
'{': true,
'|': true,
'}': true,
'~': true
};
var strReplacementsRev = {
'\n': '\\n',
'\r': '\\r',
'\t': '\\t',
'\f': '\\f',
'\v': '\\v'
};
var singleQuoteEscapeChars = {
n: '\n',
r: '\r',
t: '\t',
f: '\f',
'\\': '\\',
'\'': '\''
};
var doubleQuotesEscapeChars = {
n: '\n',
r: '\r',
t: '\t',
f: '\f',
'\\': '\\',
'"': '"'
};
function ParseContext(str, pos, pseudos, attrEqualityMods, ruleNestingOperators, substitutesEnabled) {
var chr, getIdent, getStr, l, skipWhitespace;
l = str.length;
chr = null;
getStr = function getStr(quote, escapeTable) {
var esc, hex, result;
result = '';
pos++;
chr = str.charAt(pos);
while (pos < l) {
if (chr === quote) {
pos++;
return result;
} else if (chr === '\\') {
pos++;
chr = str.charAt(pos);
if (chr === quote) {
result += quote;
} else if (esc = escapeTable[chr]) {
result += esc;
} else if (isHex(chr)) {
hex = chr;
pos++;
chr = str.charAt(pos);
while (isHex(chr)) {
hex += chr;
pos++;
chr = str.charAt(pos);
}
if (chr === ' ') {
pos++;
chr = str.charAt(pos);
}
result += String.fromCharCode(parseInt(hex, 16));
continue;
} else {
result += chr;
}
} else {
result += chr;
}
pos++;
chr = str.charAt(pos);
}
return result;
};
getIdent = function getIdent() {
var result = '';
chr = str.charAt(pos);
while (pos < l) {
if (isIdent(chr)) {
result += chr;
} else if (chr === '\\') {
pos++;
if (pos >= l) {
throw Error('Expected symbol but end of file reached.');
}
chr = str.charAt(pos);
if (identSpecialChars[chr]) {
result += chr;
} else if (isHex(chr)) {
var hex = chr;
pos++;
chr = str.charAt(pos);
while (isHex(chr)) {
hex += chr;
pos++;
chr = str.charAt(pos);
}
if (chr === ' ') {
pos++;
chr = str.charAt(pos);
}
result += String.fromCharCode(parseInt(hex, 16));
continue;
} else {
result += chr;
}
} else {
return result;
}
pos++;
chr = str.charAt(pos);
}
return result;
};
skipWhitespace = function skipWhitespace() {
chr = str.charAt(pos);
var result = false;
while (chr === ' ' || chr === '\t' || chr === '\n' || chr === '\r' || chr === '\f') {
result = true;
pos++;
chr = str.charAt(pos);
}
return result;
};
this.parse = function() {
var res = this.parseSelector();
if (pos < l) {
throw Error('Rule expected but "' + str.charAt(pos) + '" found.');
}
return res;
};
this.parseSelector = function() {
var res;
var selector = res = this.parseSingleSelector();
chr = str.charAt(pos);
while (chr === ',') {
pos++;
skipWhitespace();
if (res.type !== 'selectors') {
res = {
type: 'selectors',
selectors: [ selector ]
};
}
selector = this.parseSingleSelector();
if (!selector) {
throw Error('Rule expected after ",".');
}
res.selectors.push(selector);
}
return res;
};
this.parseSingleSelector = function() {
skipWhitespace();
var selector = {
type: 'ruleSet'
};
var rule = this.parseRule();
if (!rule) {
return null;
}
var currentRule = selector;
while (rule) {
rule.type = 'rule';
currentRule.rule = rule;
currentRule = rule;
skipWhitespace();
chr = str.charAt(pos);
if (pos >= l || chr === ',' || chr === ')') {
break;
}
if (ruleNestingOperators[chr]) {
var op = chr;
pos++;
skipWhitespace();
rule = this.parseRule();
if (!rule) {
throw Error('Rule expected after "' + op + '".');
}
rule.nestingOperator = op;
} else {
rule = this.parseRule();
if (rule) {
rule.nestingOperator = null;
}
}
}
return selector;
};
this.parseRule = function() {
var rule = null;
while (pos < l) {
chr = str.charAt(pos);
if (chr === '*') {
pos++;
(rule = rule || {}).tagName = '*';
} else if (isIdentStart(chr) || chr === '\\') {
(rule = rule || {}).tagName = getIdent();
} else if (chr === '.') {
pos++;
rule = rule || {};
(rule.classNames = rule.classNames || []).push(getIdent());
} else if (chr === '#') {
pos++;
(rule = rule || {}).id = getIdent();
} else if (chr === '[') {
pos++;
skipWhitespace();
var attr = {
name: getIdent()
};
skipWhitespace();
if (chr === ']') {
pos++;
} else {
var operator = '';
if (attrEqualityMods[chr]) {
operator = chr;
pos++;
chr = str.charAt(pos);
}
if (pos >= l) {
throw Error('Expected "=" but end of file reached.');
}
if (chr !== '=') {
throw Error('Expected "=" but "' + chr + '" found.');
}
attr.operator = operator + '=';
pos++;
skipWhitespace();
var attrValue = '';
attr.valueType = 'string';
if (chr === '"') {
attrValue = getStr('"', doubleQuotesEscapeChars);
} else if (chr === '\'') {
attrValue = getStr('\'', singleQuoteEscapeChars);
} else if (substitutesEnabled && chr === '$') {
pos++;
attrValue = getIdent();
attr.valueType = 'substitute';
} else {
while (pos < l) {
if (chr === ']') {
break;
}
attrValue += chr;
pos++;
chr = str.charAt(pos);
}
attrValue = attrValue.trim();
}
skipWhitespace();
if (pos >= l) {
throw Error('Expected "]" but end of file reached.');
}
if (chr !== ']') {
throw Error('Expected "]" but "' + chr + '" found.');
}
pos++;
attr.value = attrValue;
}
rule = rule || {};
(rule.attrs = rule.attrs || []).push(attr);
} else if (chr === ':') {
pos++;
var pseudoName = getIdent();
var pseudo = {
name: pseudoName
};
if (chr === '(') {
pos++;
var value = '';
skipWhitespace();
if (pseudos[pseudoName] === 'selector') {
pseudo.valueType = 'selector';
value = this.parseSelector();
} else {
pseudo.valueType = pseudos[pseudoName] || 'string';
if (chr === '"') {
value = getStr('"', doubleQuotesEscapeChars);
} else if (chr === '\'') {
value = getStr('\'', singleQuoteEscapeChars);
} else if (substitutesEnabled && chr === '$') {
pos++;
value = getIdent();
pseudo.valueType = 'substitute';
} else {
while (pos < l) {
if (chr === ')') {
break;
}
value += chr;
pos++;
chr = str.charAt(pos);
}
value = value.trim();
}
skipWhitespace();
}
if (pos >= l) {
throw Error('Expected ")" but end of file reached.');
}
if (chr !== ')') {
throw Error('Expected ")" but "' + chr + '" found.');
}
pos++;
pseudo.value = value;
}
rule = rule || {};
(rule.pseudos = rule.pseudos || []).push(pseudo);
} else {
break;
}
}
return rule;
};
return this;
}
CssSelectorParser.prototype.parse = function(str) {
var context = new ParseContext(str, 0, this.pseudos, this.attrEqualityMods, this.ruleNestingOperators, this.substitutesEnabled);
return context.parse();
};
CssSelectorParser.prototype.escapeIdentifier = function(s) {
var result = '';
var i = 0;
var len = s.length;
while (i < len) {
var chr = s.charAt(i);
if (identSpecialChars[chr]) {
result += '\\' + chr;
} else {
if (!(chr === '_' || chr === '-' || chr >= 'A' && chr <= 'Z' || chr >= 'a' && chr <= 'z' || i !== 0 && chr >= '0' && chr <= '9')) {
var charCode = chr.charCodeAt(0);
if ((charCode & 63488) === 55296) {
var extraCharCode = s.charCodeAt(i++);
if ((charCode & 64512) !== 55296 || (extraCharCode & 64512) !== 56320) {
throw Error('UCS-2(decode): illegal sequence');
}
charCode = ((charCode & 1023) << 10) + (extraCharCode & 1023) + 65536;
}
result += '\\' + charCode.toString(16) + ' ';
} else {
result += chr;
}
}
i++;
}
return result;
};
CssSelectorParser.prototype.escapeStr = function(s) {
var result = '';
var i = 0;
var len = s.length;
var chr, replacement;
while (i < len) {
chr = s.charAt(i);
if (chr === '"') {
chr = '\\"';
} else if (chr === '\\') {
chr = '\\\\';
} else if (replacement = strReplacementsRev[chr]) {
chr = replacement;
}
result += chr;
i++;
}
return '"' + result + '"';
};
CssSelectorParser.prototype.render = function(path) {
return this._renderEntity(path).trim();
};
CssSelectorParser.prototype._renderEntity = function(entity) {
var currentEntity, parts, res;
res = '';
switch (entity.type) {
case 'ruleSet':
currentEntity = entity.rule;
parts = [];
while (currentEntity) {
if (currentEntity.nestingOperator) {
parts.push(currentEntity.nestingOperator);
}
parts.push(this._renderEntity(currentEntity));
currentEntity = currentEntity.rule;
}
res = parts.join(' ');
break;
case 'selectors':
res = entity.selectors.map(this._renderEntity, this).join(', ');
break;
case 'rule':
if (entity.tagName) {
if (entity.tagName === '*') {
res = '*';
} else {
res = this.escapeIdentifier(entity.tagName);
}
}
if (entity.id) {
res += '#' + this.escapeIdentifier(entity.id);
}
if (entity.classNames) {
res += entity.classNames.map(function(cn) {
return '.' + this.escapeIdentifier(cn);
}, this).join('');
}
if (entity.attrs) {
res += entity.attrs.map(function(attr) {
if (attr.operator) {
if (attr.valueType === 'substitute') {
return '[' + this.escapeIdentifier(attr.name) + attr.operator + '$' + attr.value + ']';
} else {
return '[' + this.escapeIdentifier(attr.name) + attr.operator + this.escapeStr(attr.value) + ']';
}
} else {
return '[' + this.escapeIdentifier(attr.name) + ']';
}
}, this).join('');
}
if (entity.pseudos) {
res += entity.pseudos.map(function(pseudo) {
if (pseudo.valueType) {
if (pseudo.valueType === 'selector') {
return ':' + this.escapeIdentifier(pseudo.name) + '(' + this._renderEntity(pseudo.value) + ')';
} else if (pseudo.valueType === 'substitute') {
return ':' + this.escapeIdentifier(pseudo.name) + '($' + pseudo.value + ')';
} else if (pseudo.valueType === 'numeric') {
return ':' + this.escapeIdentifier(pseudo.name) + '(' + pseudo.value + ')';
} else {
return ':' + this.escapeIdentifier(pseudo.name) + '(' + this.escapeIdentifier(pseudo.value) + ')';
}
} else {
return ':' + this.escapeIdentifier(pseudo.name);
}
}, this).join('');
}
break;
default:
throw Error('Unknown entity type: "' + entity.type(+'".'));
}
return res;
};
var parser = new CssSelectorParser();
parser.registerNestingOperators('>');
axe.utils.cssParser = parser;
})(axe);
'use strict';
function truncate(str, maxLength) {
maxLength = maxLength || 300;
if (str.length > maxLength) {
var index = str.indexOf('>');
str = str.substring(0, index + 1);
}
return str;
}
function getSource(element) {
var source = element.outerHTML;
if (!source && typeof XMLSerializer === 'function') {
source = new XMLSerializer().serializeToString(element);
}
return truncate(source || '');
}
function DqElement(element, options, spec) {
this._fromFrame = !!spec;
this.spec = spec || {};
if (options && options.absolutePaths) {
this._options = {
toRoot: true
};
}
this.source = this.spec.source !== undefined ? this.spec.source : getSource(element);
this._element = element;
}
DqElement.prototype = {
get selector() {
return this.spec.selector || [ axe.utils.getSelector(this.element, this._options) ];
},
get xpath() {
return this.spec.xpath || [ axe.utils.getXpath(this.element) ];
},
get element() {
return this._element;
},
get fromFrame() {
return this._fromFrame;
},
toJSON: function toJSON() {
'use strict';
return {
selector: this.selector,
source: this.source,
xpath: this.xpath
};
}
};
DqElement.fromFrame = function(node, options, frame) {
node.selector.unshift(frame.selector);
node.xpath.unshift(frame.xpath);
return new axe.utils.DqElement(frame.element, options, node);
};
axe.utils.DqElement = DqElement;
'use strict';
axe.utils.matchesSelector = function() {
'use strict';
var method;
function getMethod(win) {
var index, candidate, elProto = win.Element.prototype, candidates = [ 'matches', 'matchesSelector', 'mozMatchesSelector', 'webkitMatchesSelector', 'msMatchesSelector' ], length = candidates.length;
for (index = 0; index < length; index++) {
candidate = candidates[index];
if (elProto[candidate]) {
return candidate;
}
}
}
return function(node, selector) {
if (!method || !node[method]) {
method = getMethod(node.ownerDocument.defaultView);
}
return node[method](selector);
};
}();
'use strict';
axe.utils.escapeSelector = function(value) {
'use strict';
var string = String(value);
var length = string.length;
var index = -1;
var codeUnit;
var result = '';
var firstCodeUnit = string.charCodeAt(0);
while (++index < length) {
codeUnit = string.charCodeAt(index);
if (codeUnit == 0) {
throw new Error('INVALID_CHARACTER_ERR');
}
if (codeUnit >= 1 && codeUnit <= 31 || codeUnit >= 127 && codeUnit <= 159 || index == 0 && codeUnit >= 48 && codeUnit <= 57 || index == 1 && codeUnit >= 48 && codeUnit <= 57 && firstCodeUnit == 45) {
result += '\\' + codeUnit.toString(16) + ' ';
continue;
}
if (index == 1 && codeUnit == 45 && firstCodeUnit == 45) {
result += '\\' + string.charAt(index);
continue;
}
if (codeUnit >= 128 || codeUnit == 45 || codeUnit == 95 || codeUnit >= 48 && codeUnit <= 57 || codeUnit >= 65 && codeUnit <= 90 || codeUnit >= 97 && codeUnit <= 122) {
result += string.charAt(index);
continue;
}
result += '\\' + string.charAt(index);
}
return result;
};
'use strict';
axe.utils.extendMetaData = function(to, from) {
Object.assign(to, from);
Object.keys(from).filter(function(prop) {
return typeof from[prop] === 'function';
}).forEach(function(prop) {
to[prop] = null;
try {
to[prop] = from[prop](to);
} catch (e) {}
});
};
'use strict';
axe.utils.finalizeRuleResult = function(ruleResult) {
Object.assign(ruleResult, axe.utils.aggregateNodeResults(ruleResult.nodes));
delete ruleResult.nodes;
return ruleResult;
};
'use strict';
var _typeof = typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol' ? function(obj) {
return typeof obj;
} : function(obj) {
return obj && typeof Symbol === 'function' && obj.constructor === Symbol && obj !== Symbol.prototype ? 'symbol' : typeof obj;
};
axe.utils.findBy = function(array, key, value) {
if (Array.isArray(array)) {
return array.find(function(obj) {
return (typeof obj === 'undefined' ? 'undefined' : _typeof(obj)) === 'object' && obj[key] === value;
});
}
};
'use strict';
var axe = axe || {
utils: {}
};
function virtualDOMfromNode(node, shadowId) {
return {
shadowId: shadowId,
children: [],
actualNode: node
};
}
function getSlotChildren(node) {
var retVal = [];
node = node.firstChild;
while (node) {
retVal.push(node);
node = node.nextSibling;
}
return retVal;
}
var possibleShadowRoots = [ 'article', 'aside', 'blockquote', 'body', 'div', 'footer', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'header', 'main', 'nav', 'p', 'section', 'span' ];
axe.utils.isShadowRoot = function isShadowRoot(node) {
var nodeName = node.nodeName.toLowerCase();
if (node.shadowRoot) {
if (/^[a-z][a-z0-9_.-]*-[a-z0-9_.-]*$/.test(nodeName) || possibleShadowRoots.includes(nodeName)) {
return true;
}
}
return false;
};
axe.utils.getFlattenedTree = function(node, shadowId) {
var retVal, realArray, nodeName;
function reduceShadowDOM(res, child) {
var replacements = axe.utils.getFlattenedTree(child, shadowId);
if (replacements) {
res = res.concat(replacements);
}
return res;
}
if (node.documentElement) {
node = node.documentElement;
}
nodeName = node.nodeName.toLowerCase();
if (axe.utils.isShadowRoot(node)) {
retVal = virtualDOMfromNode(node, shadowId);
shadowId = 'a' + Math.random().toString().substring(2);
realArray = Array.from(node.shadowRoot.childNodes);
retVal.children = realArray.reduce(reduceShadowDOM, []);
return [ retVal ];
} else {
if (nodeName === 'content') {
realArray = Array.from(node.getDistributedNodes());
return realArray.reduce(reduceShadowDOM, []);
} else if (nodeName === 'slot') {
realArray = Array.from(node.assignedNodes());
if (!realArray.length) {
realArray = getSlotChildren(node);
}
var styl = window.getComputedStyle(node);
if (false && styl.display !== 'contents') {
retVal = virtualDOMfromNode(node, shadowId);
retVal.children = realArray.reduce(reduceShadowDOM, []);
return [ retVal ];
} else {
return realArray.reduce(reduceShadowDOM, []);
}
} else {
if (node.nodeType === 1) {
retVal = virtualDOMfromNode(node, shadowId);
realArray = Array.from(node.childNodes);
retVal.children = realArray.reduce(reduceShadowDOM, []);
return [ retVal ];
} else if (node.nodeType === 3) {
return [ virtualDOMfromNode(node) ];
}
return undefined;
}
}
};
axe.utils.getNodeFromTree = function(vNode, node) {
var found;
if (vNode.actualNode === node) {
return vNode;
}
vNode.children.forEach(function(candidate) {
var retVal;
if (candidate.actualNode === node) {
found = candidate;
} else {
retVal = axe.utils.getNodeFromTree(candidate, node);
if (retVal) {
found = retVal;
}
}
});
return found;
};
'use strict';
axe.utils.getAllChecks = function getAllChecks(object) {
'use strict';
var result = [];
return result.concat(object.any || []).concat(object.all || []).concat(object.none || []);
};
'use strict';
axe.utils.getCheckOption = function(check, ruleID, options) {
var ruleCheckOption = ((options.rules && options.rules[ruleID] || {}).checks || {})[check.id];
var checkOption = (options.checks || {})[check.id];
var enabled = check.enabled;
var opts = check.options;
if (checkOption) {
if (checkOption.hasOwnProperty('enabled')) {
enabled = checkOption.enabled;
}
if (checkOption.hasOwnProperty('options')) {
opts = checkOption.options;
}
}
if (ruleCheckOption) {
if (ruleCheckOption.hasOwnProperty('enabled')) {
enabled = ruleCheckOption.enabled;
}
if (ruleCheckOption.hasOwnProperty('options')) {
opts = ruleCheckOption.options;
}
}
return {
enabled: enabled,
options: opts,
absolutePaths: options.absolutePaths
};
};
'use strict';
var _slicedToArray = function() {
function sliceIterator(arr, i) {
var _arr = [];
var _n = true;
var _d = false;
var _e = undefined;
try {
for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {
_arr.push(_s.value);
if (i && _arr.length === i) {
break;
}
}
} catch (err) {
_d = true;
_e = err;
} finally {
try {
if (!_n && _i['return']) {
_i['return']();
}
} finally {
if (_d) {
throw _e;
}
}
}
return _arr;
}
return function(arr, i) {
if (Array.isArray(arr)) {
return arr;
} else if (Symbol.iterator in Object(arr)) {
return sliceIterator(arr, i);
} else {
throw new TypeError('Invalid attempt to destructure non-iterable instance');
}
};
}();
function isMostlyNumbers() {
var str = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : '';
return str.length !== 0 && (str.match(/[0-9]/g) || '').length >= str.length / 2;
}
function splitString(str, splitIndex) {
return [ str.substring(0, splitIndex), str.substring(splitIndex) ];
}
function uriParser(url) {
var original = url;
var protocol = '', domain = '', port = '', path = '', query = '', hash = '';
if (url.includes('#')) {
var _splitString = splitString(url, url.indexOf('#'));
var _splitString2 = _slicedToArray(_splitString, 2);
url = _splitString2[0];
hash = _splitString2[1];
}
if (url.includes('?')) {
var _splitString3 = splitString(url, url.indexOf('?'));
var _splitString4 = _slicedToArray(_splitString3, 2);
url = _splitString4[0];
query = _splitString4[1];
}
if (url.includes('://')) {
var _url$split = url.split('://');
var _url$split2 = _slicedToArray(_url$split, 2);
protocol = _url$split2[0];
url = _url$split2[1];
var _splitString5 = splitString(url, url.indexOf('/'));
var _splitString6 = _slicedToArray(_splitString5, 2);
domain = _splitString6[0];
url = _splitString6[1];
} else if (url.substr(0, 2) === '//') {
url = url.substr(2);
var _splitString7 = splitString(url, url.indexOf('/'));
var _splitString8 = _slicedToArray(_splitString7, 2);
domain = _splitString8[0];
url = _splitString8[1];
}
if (domain.substr(0, 4) === 'www.') {
domain = domain.substr(4);
}
if (domain && domain.includes(':')) {
var _splitString9 = splitString(domain, domain.indexOf(':'));
var _splitString10 = _slicedToArray(_splitString9, 2);
domain = _splitString10[0];
port = _splitString10[1];
}
path = url;
return {
original: original,
protocol: protocol,
domain: domain,
port: port,
path: path,
query: query,
hash: hash
};
}
axe.utils.getFriendlyUriEnd = function getFriendlyUriEnd() {
var uri = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : '';
var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
if (uri.length <= 1 || uri.substr(0, 5) === 'data:' || uri.substr(0, 11) === 'javascript:' || uri.includes('?')) {
return;
}
var currentDomain = options.currentDomain, _options$maxLength = options.maxLength, maxLength = _options$maxLength === undefined ? 25 : _options$maxLength;
var _uriParser = uriParser(uri), path = _uriParser.path, domain = _uriParser.domain, hash = _uriParser.hash;
var pathEnd = path.substr(path.substr(0, path.length - 2).lastIndexOf('/') + 1);
if (hash) {
if (pathEnd && (pathEnd + hash).length <= maxLength) {
return pathEnd + hash;
} else if (pathEnd.length < 2 && hash.length > 2 && hash.length <= maxLength) {
return hash;
} else {
return;
}
} else if (domain && domain.length < maxLength && path.length <= 1) {
return domain + path;
}
if (path === '/' + pathEnd && domain && currentDomain && domain !== currentDomain && (domain + path).length <= maxLength) {
return domain + path;
}
var lastDotIndex = pathEnd.lastIndexOf('.');
if ((lastDotIndex === -1 || lastDotIndex > 1) && (lastDotIndex !== -1 || pathEnd.length > 2) && pathEnd.length <= maxLength && !pathEnd.match(/index(\.[a-zA-Z]{2-4})?/) && !isMostlyNumbers(pathEnd)) {
return pathEnd;
}
};
'use strict';
function _toConsumableArray(arr) {
if (Array.isArray(arr)) {
for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) {
arr2[i] = arr[i];
}
return arr2;
} else {
return Array.from(arr);
}
}
var escapeSelector = axe.utils.escapeSelector;
var isXHTML = void 0;
function isUncommonClassName(className) {
return ![ 'focus', 'hover', 'hidden', 'visible', 'dirty', 'touched', 'valid', 'disable', 'enable', 'active', 'col-' ].find(function(str) {
return className.includes(str);
});
}
function getDistinctClassList(elm) {
if (!elm.classList || elm.classList.length === 0) {
return [];
}
var siblings = elm.parentNode && Array.from(elm.parentNode.children || '') || [];
return siblings.reduce(function(classList, childElm) {
if (elm === childElm) {
return classList;
} else {
return classList.filter(function(classItem) {
return !childElm.classList.contains(classItem);
});
}
}, Array.from(elm.classList).filter(isUncommonClassName));
}
var commonNodes = [ 'div', 'span', 'p', 'b', 'i', 'u', 'strong', 'em', 'h2', 'h3' ];
function getNthChildString(elm, selector) {
var siblings = elm.parentNode && Array.from(elm.parentNode.children || '') || [];
var hasMatchingSiblings = siblings.find(function(sibling) {
return sibling !== elm && axe.utils.matchesSelector(sibling, selector);
});
if (hasMatchingSiblings) {
var nthChild = 1 + siblings.indexOf(elm);
return ':nth-child(' + nthChild + ')';
} else {
return '';
}
}
var createSelector = {
getElmId: function getElmId(elm) {
if (!elm.getAttribute('id')) {
return;
}
var doc = elm.getRootNode && elm.getRootNode() || document;
var id = '#' + escapeSelector(elm.getAttribute('id') || '');
if (!id.match(/player_uid_/) && doc.querySelectorAll(id).length === 1) {
return id;
}
},
getCustomElm: function getCustomElm(elm, _ref) {
var isCustomElm = _ref.isCustomElm, nodeName = _ref.nodeName;
if (isCustomElm) {
return nodeName;
}
},
getElmRoleProp: function getElmRoleProp(elm) {
if (elm.hasAttribute('role')) {
return '[role="' + escapeSelector(elm.getAttribute('role')) + '"]';
}
},
getUncommonElm: function getUncommonElm(elm, _ref2) {
var isCommonElm = _ref2.isCommonElm, isCustomElm = _ref2.isCustomElm, nodeName = _ref2.nodeName;
if (!isCommonElm && !isCustomElm) {
if (nodeName === 'input' && elm.hasAttribute('type')) {
nodeName += '[type="' + elm.type + '"]';
}
return nodeName;
}
},
getElmNameProp: function getElmNameProp(elm) {
if (!elm.hasAttribute('id') && elm.name) {
return '[name="' + escapeSelector(elm.name) + '"]';
}
},
getDistinctClass: function getDistinctClass(elm, _ref3) {
var distinctClassList = _ref3.distinctClassList;
if (distinctClassList.length > 0 && distinctClassList.length < 3) {
return '.' + distinctClassList.map(escapeSelector).join('.');
}
},
getFileRefProp: function getFileRefProp(elm) {
var attr = void 0;
if (elm.hasAttribute('href')) {
attr = 'href';
} else if (elm.hasAttribute('src')) {
attr = 'src';
} else {
return;
}
var friendlyUriEnd = axe.utils.getFriendlyUriEnd(elm.getAttribute(attr));
if (friendlyUriEnd) {
return '[' + attr + '$="' + encodeURI(friendlyUriEnd) + '"]';
}
},
getCommonName: function getCommonName(elm, _ref4) {
var nodeName = _ref4.nodeName, isCommonElm = _ref4.isCommonElm;
if (isCommonElm) {
return nodeName;
}
}
};
function getElmFeatures(elm, featureCount) {
if (typeof isXHTML === 'undefined') {
isXHTML = axe.utils.isXHTML(document);
}
var nodeName = escapeSelector(isXHTML ? elm.localName : elm.nodeName.toLowerCase());
var classList = Array.from(elm.classList) || [];
var props = {
nodeName: nodeName,
classList: classList,
isCustomElm: nodeName.includes('-'),
isCommonElm: commonNodes.includes(nodeName),
distinctClassList: getDistinctClassList(elm)
};
return [ createSelector.getCustomElm, createSelector.getElmRoleProp, createSelector.getUncommonElm, createSelector.getElmNameProp, createSelector.getDistinctClass, createSelector.getFileRefProp, createSelector.getCommonName ].reduce(function(features, func) {
if (features.length === featureCount) {
return features;
}
var feature = func(elm, props);
if (feature) {
if (!feature[0].match(/[a-z]/)) {
features.push(feature);
} else {
features.unshift(feature);
}
}
return features;
}, []);
}
function generateSelector(elm, options, doc) {
var selector = void 0, addParent = void 0;
var _options$isUnique = options.isUnique, isUnique = _options$isUnique === undefined ? false : _options$isUnique;
var idSelector = createSelector.getElmId(elm);
var _options$featureCount = options.featureCount, featureCount = _options$featureCount === undefined ? 2 : _options$featureCount, _options$minDepth = options.minDepth, minDepth = _options$minDepth === undefined ? 1 : _options$minDepth, _options$toRoot = options.toRoot, toRoot = _options$toRoot === undefined ? false : _options$toRoot, _options$childSelecto = options.childSelectors, childSelectors = _options$childSelecto === undefined ? [] : _options$childSelecto;
if (idSelector) {
selector = idSelector;
isUnique = true;
} else {
selector = getElmFeatures(elm, featureCount).join('');
selector += getNthChildString(elm, selector);
isUnique = options.isUnique || doc.querySelectorAll(selector).length === 1;
if (!isUnique && elm === document.documentElement) {
selector += ':root';
}
addParent = minDepth !== 0 || !isUnique;
}
var selectorParts = [ selector ].concat(_toConsumableArray(childSelectors));
if (elm.parentElement && elm.parentElement.nodeType !== 11 && (toRoot || addParent)) {
return generateSelector(elm.parentNode, {
toRoot: toRoot,
isUnique: isUnique,
childSelectors: selectorParts,
featureCount: 1,
minDepth: minDepth - 1
}, doc);
} else {
return selectorParts.join(' > ');
}
}
axe.utils.getSelector = function createUniqueSelector(elm) {
var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
if (!elm) {
return '';
}
var doc = elm.getRootNode && elm.getRootNode() || document;
if (doc.nodeType === 11) {
var stack = [];
while (doc.nodeType === 11) {
stack.push({
elm: elm,
doc: doc
});
elm = doc.host;
doc = elm.getRootNode();
}
stack.push({
elm: elm,
doc: doc
});
return stack.reverse().map(function(comp) {
return generateSelector(comp.elm, options, comp.doc);
});
} else {
return generateSelector(elm, options, doc);
}
};
'use strict';
function getXPathArray(node, path) {
var sibling, count;
if (!node) {
return [];
}
if (!path && node.nodeType === 9) {
path = [ {
str: 'html'
} ];
return path;
}
path = path || [];
if (node.parentNode && node.parentNode !== node) {
path = getXPathArray(node.parentNode, path);
}
if (node.previousSibling) {
count = 1;
sibling = node.previousSibling;
do {
if (sibling.nodeType === 1 && sibling.nodeName === node.nodeName) {
count++;
}
sibling = sibling.previousSibling;
} while (sibling);
if (count === 1) {
count = null;
}
} else if (node.nextSibling) {
sibling = node.nextSibling;
do {
if (sibling.nodeType === 1 && sibling.nodeName === node.nodeName) {
count = 1;
sibling = null;
} else {
count = null;
sibling = sibling.previousSibling;
}
} while (sibling);
}
if (node.nodeType === 1) {
var element = {};
element.str = node.nodeName.toLowerCase();
var id = node.getAttribute && axe.utils.escapeSelector(node.getAttribute('id'));
if (id && node.ownerDocument.querySelectorAll('#' + id).length === 1) {
element.id = node.getAttribute('id');
}
if (count > 1) {
element.count = count;
}
path.push(element);
}
return path;
}
function xpathToString(xpathArray) {
return xpathArray.reduce(function(str, elm) {
if (elm.id) {
return '/' + elm.str + '[@id=\'' + elm.id + '\']';
} else {
return str + ('/' + elm.str) + (elm.count > 0 ? '[' + elm.count + ']' : '');
}
}, '');
}
axe.utils.getXpath = function getXpath(node) {
var xpathArray = getXPathArray(node);
return xpathToString(xpathArray);
};
'use strict';
var styleSheet;
function injectStyle(style) {
'use strict';
if (styleSheet && styleSheet.parentNode) {
if (styleSheet.styleSheet === undefined) {
styleSheet.appendChild(document.createTextNode(style));
} else {
styleSheet.styleSheet.cssText += style;
}
return styleSheet;
}
if (!style) {
return;
}
var head = document.head || document.getElementsByTagName('head')[0];
styleSheet = document.createElement('style');
styleSheet.type = 'text/css';
if (styleSheet.styleSheet === undefined) {
styleSheet.appendChild(document.createTextNode(style));
} else {
styleSheet.styleSheet.cssText = style;
}
head.appendChild(styleSheet);
return styleSheet;
}
axe.utils.injectStyle = injectStyle;
'use strict';
axe.utils.isHidden = function isHidden(el, recursed) {
'use strict';
var parent;
if (el.nodeType === 9) {
return false;
}
if (el.nodeType === 11) {
el = el.host;
}
var style = window.getComputedStyle(el, null);
if (!style || !el.parentNode || style.getPropertyValue('display') === 'none' || !recursed && style.getPropertyValue('visibility') === 'hidden' || el.getAttribute('aria-hidden') === 'true') {
return true;
}
parent = el.assignedSlot ? el.assignedSlot : el.parentNode;
return axe.utils.isHidden(parent, true);
};
'use strict';
axe.utils.isXHTML = function(doc) {
'use strict';
if (!doc.createElement) {
return false;
}
return doc.createElement('A').localName === 'A';
};
'use strict';
function pushFrame(resultSet, options, frameElement, frameSelector) {
'use strict';
var frameXpath = axe.utils.getXpath(frameElement);
var frameSpec = {
element: frameElement,
selector: frameSelector,
xpath: frameXpath
};
resultSet.forEach(function(res) {
res.node = axe.utils.DqElement.fromFrame(res.node, options, frameSpec);
var checks = axe.utils.getAllChecks(res);
if (checks.length) {
checks.forEach(function(check) {
check.relatedNodes = check.relatedNodes.map(function(node) {
return axe.utils.DqElement.fromFrame(node, options, frameSpec);
});
});
}
});
}
function spliceNodes(target, to) {
'use strict';
var firstFromFrame = to[0].node, sorterResult, t;
for (var i = 0, l = target.length; i < l; i++) {
t = target[i].node;
sorterResult = axe.utils.nodeSorter({
actualNode: t.element
}, {
actualNode: firstFromFrame.element
});
if (sorterResult > 0 || sorterResult === 0 && firstFromFrame.selector.length < t.selector.length) {
target.splice.apply(target, [ i, 0 ].concat(to));
return;
}
}
target.push.apply(target, to);
}
function normalizeResult(result) {
'use strict';
if (!result || !result.results) {
return null;
}
if (!Array.isArray(result.results)) {
return [ result.results ];
}
if (!result.results.length) {
return null;
}
return result.results;
}
axe.utils.mergeResults = function mergeResults(frameResults, options) {
'use strict';
var result = [];
frameResults.forEach(function(frameResult) {
var results = normalizeResult(frameResult);
if (!results || !results.length) {
return;
}
results.forEach(function(ruleResult) {
if (ruleResult.nodes && frameResult.frame) {
pushFrame(ruleResult.nodes, options, frameResult.frameElement, frameResult.frame);
}
var res = axe.utils.findBy(result, 'id', ruleResult.id);
if (!res) {
result.push(ruleResult);
} else {
if (ruleResult.nodes.length) {
spliceNodes(res.nodes, ruleResult.nodes);
}
}
});
});
return result;
};
'use strict';
axe.utils.nodeSorter = function nodeSorter(a, b) {
'use strict';
if (a.actualNode === b.actualNode) {
return 0;
}
if (a.actualNode.compareDocumentPosition(b.actualNode) & 4) {
return -1;
}
return 1;
};
'use strict';
utils.performanceTimer = function() {
'use strict';
function now() {
if (window.performance && window.performance) {
return window.performance.now();
}
}
var originalTime = null;
var lastRecordedTime = now();
return {
start: function start() {
this.mark('mark_axe_start');
},
end: function end() {
this.mark('mark_axe_end');
this.measure('axe', 'mark_axe_start', 'mark_axe_end');
this.logMeasures('axe');
},
auditStart: function auditStart() {
this.mark('mark_audit_start');
},
auditEnd: function auditEnd() {
this.mark('mark_audit_end');
this.measure('audit_start_to_end', 'mark_audit_start', 'mark_audit_end');
this.logMeasures();
},
mark: function mark(markName) {
if (window.performance && window.performance.mark !== undefined) {
window.performance.mark(markName);
}
},
measure: function measure(measureName, startMark, endMark) {
if (window.performance && window.performance.measure !== undefined) {
window.performance.measure(measureName, startMark, endMark);
}
},
logMeasures: function logMeasures(measureName) {
function log(req) {
axe.log('Measure ' + req.name + ' took ' + req.duration + 'ms');
}
if (window.performance && window.performance.getEntriesByType !== undefined) {
var measures = window.performance.getEntriesByType('measure');
for (var i = 0; i < measures.length; ++i) {
var req = measures[i];
if (req.name === measureName) {
log(req);
return;
}
log(req);
}
}
},
timeElapsed: function timeElapsed() {
return now() - lastRecordedTime;
},
reset: function reset() {
if (!originalTime) {
originalTime = now();
}
lastRecordedTime = now();
}
};
}();
'use strict';
if (typeof Object.assign !== 'function') {
(function() {
Object.assign = function(target) {
'use strict';
if (target === undefined || target === null) {
throw new TypeError('Cannot convert undefined or null to object');
}
var output = Object(target);
for (var index = 1; index < arguments.length; index++) {
var source = arguments[index];
if (source !== undefined && source !== null) {
for (var nextKey in source) {
if (source.hasOwnProperty(nextKey)) {
output[nextKey] = source[nextKey];
}
}
}
}
return output;
};
})();
}
if (!Array.prototype.find) {
Object.defineProperty(Array.prototype, 'find', {
value: function value(predicate) {
if (this === null) {
throw new TypeError('Array.prototype.find called on null or undefined');
}
if (typeof predicate !== 'function') {
throw new TypeError('predicate must be a function');
}
var list = Object(this);
var length = list.length >>> 0;
var thisArg = arguments[1];
var value;
for (var i = 0; i < length; i++) {
value = list[i];
if (predicate.call(thisArg, value, i, list)) {
return value;
}
}
return undefined;
}
});
}
axe.utils.pollyfillElementsFromPoint = function() {
if (document.elementsFromPoint) {
return document.elementsFromPoint;
}
if (document.msElementsFromPoint) {
return document.msElementsFromPoint;
}
var usePointer = function() {
var element = document.createElement('x');
element.style.cssText = 'pointer-events:auto';
return element.style.pointerEvents === 'auto';
}();
var cssProp = usePointer ? 'pointer-events' : 'visibility';
var cssDisableVal = usePointer ? 'none' : 'hidden';
var style = document.createElement('style');
style.innerHTML = usePointer ? '* { pointer-events: all }' : '* { visibility: visible }';
return function(x, y) {
var current, i, d;
var elements = [];
var previousPointerEvents = [];
document.head.appendChild(style);
while ((current = document.elementFromPoint(x, y)) && elements.indexOf(current) === -1) {
elements.push(current);
previousPointerEvents.push({
value: current.style.getPropertyValue(cssProp),
priority: current.style.getPropertyPriority(cssProp)
});
current.style.setProperty(cssProp, cssDisableVal, 'important');
}
if (elements.indexOf(document.documentElement) < elements.length - 1) {
elements.splice(elements.indexOf(document.documentElement), 1);
elements.push(document.documentElement);
}
for (i = previousPointerEvents.length; !!(d = previousPointerEvents[--i]); ) {
elements[i].style.setProperty(cssProp, d.value ? d.value : '', d.priority);
}
document.head.removeChild(style);
return elements;
};
};
if (typeof window.addEventListener === 'function') {
document.elementsFromPoint = axe.utils.pollyfillElementsFromPoint();
}
if (!Array.prototype.includes) {
Object.defineProperty(Array.prototype, 'includes', {
value: function value(searchElement) {
'use strict';
var O = Object(this);
var len = parseInt(O.length, 10) || 0;
if (len === 0) {
return false;
}
var n = parseInt(arguments[1], 10) || 0;
var k;
if (n >= 0) {
k = n;
} else {
k = len + n;
if (k < 0) {
k = 0;
}
}
var currentElement;
while (k < len) {
currentElement = O[k];
if (searchElement === currentElement || searchElement !== searchElement && currentElement !== currentElement) {
return true;
}
k++;
}
return false;
}
});
}
if (!Array.prototype.some) {
Object.defineProperty(Array.prototype, 'some', {
value: function value(fun) {
'use strict';
if (this == null) {
throw new TypeError('Array.prototype.some called on null or undefined');
}
if (typeof fun !== 'function') {
throw new TypeError();
}
var t = Object(this);
var len = t.length >>> 0;
var thisArg = arguments.length >= 2 ? arguments[1] : void 0;
for (var i = 0; i < len; i++) {
if (i in t && fun.call(thisArg, t[i], i, t)) {
return true;
}
}
return false;
}
});
}
if (!Array.from) {
Object.defineProperty(Array, 'from', {
value: function() {
var toStr = Object.prototype.toString;
var isCallable = function isCallable(fn) {
return typeof fn === 'function' || toStr.call(fn) === '[object Function]';
};
var toInteger = function toInteger(value) {
var number = Number(value);
if (isNaN(number)) {
return 0;
}
if (number === 0 || !isFinite(number)) {
return number;
}
return (number > 0 ? 1 : -1) * Math.floor(Math.abs(number));
};
var maxSafeInteger = Math.pow(2, 53) - 1;
var toLength = function toLength(value) {
var len = toInteger(value);
return Math.min(Math.max(len, 0), maxSafeInteger);
};
return function from(arrayLike) {
var C = this;
var items = Object(arrayLike);
if (arrayLike == null) {
throw new TypeError('Array.from requires an array-like object - not null or undefined');
}
var mapFn = arguments.length > 1 ? arguments[1] : void undefined;
var T;
if (typeof mapFn !== 'undefined') {
if (!isCallable(mapFn)) {
throw new TypeError('Array.from: when provided, the second argument must be a function');
}
if (arguments.length > 2) {
T = arguments[2];
}
}
var len = toLength(items.length);
var A = isCallable(C) ? Object(new C(len)) : new Array(len);
var k = 0;
var kValue;
while (k < len) {
kValue = items[k];
if (mapFn) {
A[k] = typeof T === 'undefined' ? mapFn(kValue, k) : mapFn.call(T, kValue, k);
} else {
A[k] = kValue;
}
k += 1;
}
A.length = len;
return A;
};
}()
});
}
if (!String.prototype.includes) {
String.prototype.includes = function(search, start) {
if (typeof start !== 'number') {
start = 0;
}
if (start + search.length > this.length) {
return false;
} else {
return this.indexOf(search, start) !== -1;
}
};
}
'use strict';
var _typeof = typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol' ? function(obj) {
return typeof obj;
} : function(obj) {
return obj && typeof Symbol === 'function' && obj.constructor === Symbol && obj !== Symbol.prototype ? 'symbol' : typeof obj;
};
function getIncompleteReason(checkData, messages) {
function getDefaultMsg(messages) {
if (messages.incomplete && messages.incomplete.default) {
return messages.incomplete.default;
} else {
return helpers.incompleteFallbackMessage();
}
}
if (checkData && checkData.missingData) {
try {
var msg = messages.incomplete[checkData.missingData[0].reason];
if (!msg) {
throw new Error();
}
return msg;
} catch (e) {
if (typeof checkData.missingData === 'string') {
return messages.incomplete[checkData.missingData];
} else {
return getDefaultMsg(messages);
}
}
} else {
return getDefaultMsg(messages);
}
}
function extender(checksData, shouldBeTrue) {
'use strict';
return function(check) {
var sourceData = checksData[check.id] || {};
var messages = sourceData.messages || {};
var data = Object.assign({}, sourceData);
delete data.messages;
if (check.result === undefined) {
if (_typeof(messages.incomplete) === 'object') {
data.message = function() {
return getIncompleteReason(check.data, messages);
};
} else {
data.message = messages.incomplete;
}
} else {
data.message = check.result === shouldBeTrue ? messages.pass : messages.fail;
}
axe.utils.extendMetaData(check, data);
};
}
axe.utils.publishMetaData = function(ruleResult) {
'use strict';
var checksData = axe._audit.data.checks || {};
var rulesData = axe._audit.data.rules || {};
var rule = axe.utils.findBy(axe._audit.rules, 'id', ruleResult.id) || {};
ruleResult.tags = axe.utils.clone(rule.tags || []);
var shouldBeTrue = extender(checksData, true);
var shouldBeFalse = extender(checksData, false);
ruleResult.nodes.forEach(function(detail) {
detail.any.forEach(shouldBeTrue);
detail.all.forEach(shouldBeTrue);
detail.none.forEach(shouldBeFalse);
});
axe.utils.extendMetaData(ruleResult, axe.utils.clone(rulesData[ruleResult.id] || {}));
};
'use strict';
var convertExpressions = function convertExpressions() {};
var matchExpressions = function matchExpressions() {};
function matchesTag(node, exp) {
return node.nodeType === 1 && (exp.tag === '*' || node.nodeName.toLowerCase() === exp.tag);
}
function matchesClasses(node, exp) {
return !exp.classes || exp.classes.reduce(function(result, cl) {
return result && node.className && node.className.match(cl.regexp);
}, true);
}
function matchesAttributes(node, exp) {
return !exp.attributes || exp.attributes.reduce(function(result, att) {
var nodeAtt = node.getAttribute(att.key);
return result && nodeAtt !== null && (!att.value || att.test(nodeAtt));
}, true);
}
function matchesId(node, exp) {
return !exp.id || node.id === exp.id;
}
function matchesPseudos(target, exp) {
if (!exp.pseudos || exp.pseudos.reduce(function(result, pseudo) {
if (pseudo.name === 'not') {
return result && !matchExpressions([ target ], pseudo.expressions, false, target.shadowId).length;
}
throw new Error('the pseudo selector ' + pseudo.name + ' has not yet been implemented');
}, true)) {
return true;
}
return false;
}
var escapeRegExp = function() {
/*! Credit: XRegExp 0.6.1 (c) 2007-2008 Steven Levithan <http://stevenlevithan.com/regex/xregexp/> MIT License */
var from = /(?=[\-\[\]{}()*+?.\\\^$|,#\s])/g;
var to = '\\';
return function(string) {
return string.replace(from, to);
};
}();
var reUnescape = /\\/g;
function convertAttributes(atts) {
/*! Credit Mootools Copyright Mootools, MIT License */
if (!atts) {
return;
}
return atts.map(function(att) {
var attributeKey = att.name.replace(reUnescape, '');
var attributeValue = (att.value || '').replace(reUnescape, '');
var test, regexp;
switch (att.operator) {
case '^=':
regexp = new RegExp('^' + escapeRegExp(attributeValue));
break;
case '$=':
regexp = new RegExp(escapeRegExp(attributeValue) + '$');
break;
case '~=':
regexp = new RegExp('(^|\\s)' + escapeRegExp(attributeValue) + '(\\s|$)');
break;
case '|=':
regexp = new RegExp('^' + escapeRegExp(attributeValue) + '(-|$)');
break;
case '=':
test = function test(value) {
return attributeValue === value;
};
break;
case '*=':
test = function test(value) {
return value && value.includes(attributeValue);
};
break;
case '!=':
test = function test(value) {
return attributeValue !== value;
};
break;
default:
test = function test(value) {
return !!value;
};
}
if (attributeValue === '' && /^[*$^]=$/.test(att.operator)) {
test = function test() {
return false;
};
}
if (!test) {
test = function test(value) {
return value && regexp.test(value);
};
}
return {
key: attributeKey,
value: attributeValue,
test: test
};
});
}
function convertClasses(classes) {
if (!classes) {
return;
}
return classes.map(function(className) {
className = className.replace(reUnescape, '');
return {
value: className,
regexp: new RegExp('(^|\\s)' + escapeRegExp(className) + '(\\s|$)')
};
});
}
function convertPseudos(pseudos) {
if (!pseudos) {
return;
}
return pseudos.map(function(p) {
var expressions;
if (p.name === 'not') {
expressions = axe.utils.cssParser.parse(p.value);
expressions = expressions.selectors ? expressions.selectors : [ expressions ];
expressions = convertExpressions(expressions);
}
return {
name: p.name,
expressions: expressions,
value: p.value
};
});
}
convertExpressions = function convertExpressions(expressions) {
return expressions.map(function(exp) {
var newExp = [];
var rule = exp.rule;
while (rule) {
newExp.push({
tag: rule.tagName ? rule.tagName.toLowerCase() : '*',
combinator: rule.nestingOperator ? rule.nestingOperator : ' ',
id: rule.id,
attributes: convertAttributes(rule.attrs),
classes: convertClasses(rule.classNames),
pseudos: convertPseudos(rule.pseudos)
});
rule = rule.rule;
}
return newExp;
});
};
function createLocalVariables(nodes, anyLevel, thisLevel, parentShadowId) {
var retVal = {
nodes: nodes.slice(),
anyLevel: anyLevel,
thisLevel: thisLevel,
parentShadowId: parentShadowId
};
retVal.nodes.reverse();
return retVal;
}
function matchesSelector(node, exp) {
return matchesTag(node.actualNode, exp[0]) && matchesClasses(node.actualNode, exp[0]) && matchesAttributes(node.actualNode, exp[0]) && matchesId(node.actualNode, exp[0]) && matchesPseudos(node, exp[0]);
}
matchExpressions = function matchExpressions(domTree, expressions, recurse, parentShadowId, filter) {
var stack = [];
var nodes = Array.isArray(domTree) ? domTree : [ domTree ];
var currentLevel = createLocalVariables(nodes, expressions, [], parentShadowId);
var result = [];
while (currentLevel.nodes.length) {
var node = currentLevel.nodes.pop();
var childOnly = [];
var childAny = [];
var combined = currentLevel.anyLevel.slice().concat(currentLevel.thisLevel);
var added = false;
for (var i = 0; i < combined.length; i++) {
var exp = combined[i];
if (matchesSelector(node, exp) && (!exp[0].id || node.shadowId === currentLevel.parentShadowId)) {
if (exp.length === 1) {
if (!added && (!filter || filter(node))) {
result.push(node);
added = true;
}
} else {
var rest = exp.slice(1);
if ([ ' ', '>' ].includes(rest[0].combinator) === false) {
throw new Error('axe.utils.querySelectorAll does not support the combinator: ' + exp[1].combinator);
}
if (rest[0].combinator === '>') {
childOnly.push(rest);
} else {
childAny.push(rest);
}
}
}
if (currentLevel.anyLevel.includes(exp) && (!exp[0].id || node.shadowId === currentLevel.parentShadowId)) {
childAny.push(exp);
}
}
if (node.children && node.children.length && recurse) {
stack.push(currentLevel);
currentLevel = createLocalVariables(node.children, childAny, childOnly, node.shadowId);
}
while (!currentLevel.nodes.length && stack.length) {
currentLevel = stack.pop();
}
}
return result;
};
axe.utils.querySelectorAll = function(domTree, selector) {
return axe.utils.querySelectorAllFilter(domTree, selector);
};
axe.utils.querySelectorAllFilter = function(domTree, selector, filter) {
domTree = Array.isArray(domTree) ? domTree : [ domTree ];
var expressions = axe.utils.cssParser.parse(selector);
expressions = expressions.selectors ? expressions.selectors : [ expressions ];
expressions = convertExpressions(expressions);
return matchExpressions(domTree, expressions, true, domTree[0].shadowId, filter);
};
'use strict';
var _typeof = typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol' ? function(obj) {
return typeof obj;
} : function(obj) {
return obj && typeof Symbol === 'function' && obj.constructor === Symbol && obj !== Symbol.prototype ? 'symbol' : typeof obj;
};
(function() {
'use strict';
function noop() {}
function funcGuard(f) {
if (typeof f !== 'function') {
throw new TypeError('Queue methods require functions as arguments');
}
}
function queue() {
var tasks = [];
var started = 0;
var remaining = 0;
var completeQueue = noop;
var complete = false;
var err;
var defaultFail = function defaultFail(e) {
err = e;
setTimeout(function() {
if (err !== undefined && err !== null) {
axe.log('Uncaught error (of queue)', err);
}
}, 1);
};
var failed = defaultFail;
function createResolve(i) {
return function(r) {
tasks[i] = r;
remaining -= 1;
if (!remaining && completeQueue !== noop) {
complete = true;
completeQueue(tasks);
}
};
}
function abort(msg) {
completeQueue = noop;
failed(msg);
return tasks;
}
function pop() {
var length = tasks.length;
for (;started < length; started++) {
var task = tasks[started];
try {
task.call(null, createResolve(started), abort);
} catch (e) {
abort(e);
}
}
}
var q = {
defer: function defer(fn) {
if ((typeof fn === 'undefined' ? 'undefined' : _typeof(fn)) === 'object' && fn.then && fn.catch) {
var defer = fn;
fn = function fn(resolve, reject) {
defer.then(resolve).catch(reject);
};
}
funcGuard(fn);
if (err !== undefined) {
return;
} else if (complete) {
throw new Error('Queue already completed');
}
tasks.push(fn);
++remaining;
pop();
return q;
},
then: function then(fn) {
funcGuard(fn);
if (completeQueue !== noop) {
throw new Error('queue `then` already set');
}
if (!err) {
completeQueue = fn;
if (!remaining) {
complete = true;
completeQueue(tasks);
}
}
return q;
},
catch: function _catch(fn) {
funcGuard(fn);
if (failed !== defaultFail) {
throw new Error('queue `catch` already set');
}
if (!err) {
failed = fn;
} else {
fn(err);
err = null;
}
return q;
},
abort: abort
};
return q;
}
axe.utils.queue = queue;
})();
'use strict';
var _typeof = typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol' ? function(obj) {
return typeof obj;
} : function(obj) {
return obj && typeof Symbol === 'function' && obj.constructor === Symbol && obj !== Symbol.prototype ? 'symbol' : typeof obj;
};
(function(exports) {
'use strict';
var messages = {}, subscribers = {}, errorTypes = Object.freeze([ 'EvalError', 'RangeError', 'ReferenceError', 'SyntaxError', 'TypeError', 'URIError' ]);
function _getSource() {
var application = 'axe', version = '', src;
if (typeof axe !== 'undefined' && axe._audit && !axe._audit.application) {
application = axe._audit.application;
}
if (typeof axe !== 'undefined') {
version = axe.version;
}
src = application + '.' + version;
return src;
}
function verify(postedMessage) {
if ((typeof postedMessage === 'undefined' ? 'undefined' : _typeof(postedMessage)) === 'object' && typeof postedMessage.uuid === 'string' && postedMessage._respondable === true) {
var messageSource = _getSource();
return postedMessage._source === messageSource || postedMessage._source === 'axe.x.y.z' || messageSource === 'axe.x.y.z';
}
return false;
}
function post(win, topic, message, uuid, keepalive, callback) {
var error;
if (message instanceof Error) {
error = {
name: message.name,
message: message.message,
stack: message.stack
};
message = undefined;
}
var data = {
uuid: uuid,
topic: topic,
message: message,
error: error,
_respondable: true,
_source: _getSource(),
_keepalive: keepalive
};
if (typeof callback === 'function') {
messages[uuid] = callback;
}
win.postMessage(JSON.stringify(data), '*');
}
function respondable(win, topic, message, keepalive, callback) {
var id = uuid.v1();
post(win, topic, message, id, keepalive, callback);
}
respondable.subscribe = function(topic, callback) {
subscribers[topic] = callback;
};
respondable.isInFrame = function(win) {
win = win || window;
return !!win.frameElement;
};
function createResponder(source, topic, uuid) {
return function(message, keepalive, callback) {
post(source, topic, message, uuid, keepalive, callback);
};
}
function publish(target, data, keepalive) {
var topic = data.topic;
var subscriber = subscribers[topic];
if (subscriber) {
var responder = createResponder(target, null, data.uuid);
subscriber(data.message, keepalive, responder);
}
}
function buildErrorObject(error) {
var msg = error.message || 'Unknown error occurred';
var errorName = errorTypes.includes(error.name) ? error.name : 'Error';
var ErrConstructor = window[errorName] || Error;
if (error.stack) {
msg += '\n' + error.stack.replace(error.message, '');
}
return new ErrConstructor(msg);
}
function parseMessage(dataString) {
var data;
if (typeof dataString !== 'string') {
return;
}
try {
data = JSON.parse(dataString);
} catch (ex) {}
if (!verify(data)) {
return;
}
if (_typeof(data.error) === 'object') {
data.error = buildErrorObject(data.error);
} else {
data.error = undefined;
}
return data;
}
if (typeof window.addEventListener === 'function') {
window.addEventListener('message', function(e) {
var data = parseMessage(e.data);
if (!data) {
return;
}
var uuid = data.uuid;
var keepalive = data._keepalive;
var callback = messages[uuid];
if (callback) {
var result = data.error || data.message;
var responder = createResponder(e.source, data.topic, uuid);
callback(result, keepalive, responder);
if (!keepalive) {
delete messages[uuid];
}
}
if (!data.error) {
try {
publish(e.source, data, keepalive);
} catch (err) {
post(e.source, data.topic, err, uuid, false);
}
}
}, false);
}
exports.respondable = respondable;
})(utils);
'use strict';
function matchTags(rule, runOnly) {
'use strict';
var include, exclude, matching;
var defaultExclude = axe._audit && axe._audit.tagExclude ? axe._audit.tagExclude : [];
if (runOnly.hasOwnProperty('include') || runOnly.hasOwnProperty('exclude')) {
include = runOnly.include || [];
include = Array.isArray(include) ? include : [ include ];
exclude = runOnly.exclude || [];
exclude = Array.isArray(exclude) ? exclude : [ exclude ];
exclude = exclude.concat(defaultExclude.filter(function(tag) {
return include.indexOf(tag) === -1;
}));
} else {
include = Array.isArray(runOnly) ? runOnly : [ runOnly ];
exclude = defaultExclude.filter(function(tag) {
return include.indexOf(tag) === -1;
});
}
matching = include.some(function(tag) {
return rule.tags.indexOf(tag) !== -1;
});
if (matching || include.length === 0 && rule.enabled !== false) {
return exclude.every(function(tag) {
return rule.tags.indexOf(tag) === -1;
});
} else {
return false;
}
}
axe.utils.ruleShouldRun = function(rule, context, options) {
'use strict';
var runOnly = options.runOnly || {};
var ruleOptions = (options.rules || {})[rule.id];
if (rule.pageLevel && !context.page) {
return false;
} else if (runOnly.type === 'rule') {
return runOnly.values.indexOf(rule.id) !== -1;
} else if (ruleOptions && typeof ruleOptions.enabled === 'boolean') {
return ruleOptions.enabled;
} else if (runOnly.type === 'tag' && runOnly.values) {
return matchTags(rule, runOnly.values);
} else {
return matchTags(rule, []);
}
};
'use strict';
function getScroll(elm) {
var style = window.getComputedStyle(elm);
var visibleOverflowY = style.getPropertyValue('overflow-y') === 'visible';
var visibleOverflowX = style.getPropertyValue('overflow-x') === 'visible';
if (!visibleOverflowY && elm.scrollHeight > elm.clientHeight || !visibleOverflowX && elm.scrollWidth > elm.clientWidth) {
return {
elm: elm,
top: elm.scrollTop,
left: elm.scrollLeft
};
}
}
function setScroll(elm, top, left) {
if (elm === window) {
return elm.scroll(top, left);
} else {
elm.scrollTop = top;
elm.scrollLeft = left;
}
}
function getElmScrollRecursive(root) {
return Array.from(root.children).reduce(function(scrolls, elm) {
var scroll = getScroll(elm);
if (scroll) {
scrolls.push(scroll);
}
return scrolls.concat(getElmScrollRecursive(elm));
}, []);
}
axe.utils.getScrollState = function getScrollState() {
var win = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : window;
var root = win.document.documentElement;
var windowScroll = [ win.pageXOffset !== undefined ? {
elm: win,
top: win.pageYOffset,
left: win.pageXOffset
} : {
elm: root,
top: root.scrollTop,
left: root.scrollLeft
} ];
return windowScroll.concat(getElmScrollRecursive(document.body));
};
axe.utils.setScrollState = function setScrollState(scrollState) {
scrollState.forEach(function(_ref) {
var elm = _ref.elm, top = _ref.top, left = _ref.left;
return setScroll(elm, top, left);
});
};
'use strict';
function getDeepest(collection) {
'use strict';
return collection.sort(function(a, b) {
if (axe.utils.contains(a, b)) {
return 1;
}
return -1;
})[0];
}
function isNodeInContext(node, context) {
'use strict';
var include = context.include && getDeepest(context.include.filter(function(candidate) {
return axe.utils.contains(candidate, node);
}));
var exclude = context.exclude && getDeepest(context.exclude.filter(function(candidate) {
return axe.utils.contains(candidate, node);
}));
if (!exclude && include || exclude && axe.utils.contains(exclude, include)) {
return true;
}
return false;
}
function pushNode(result, nodes) {
'use strict';
var temp;
if (result.length === 0) {
return nodes;
}
if (result.length < nodes.length) {
temp = result;
result = nodes;
nodes = temp;
}
for (var i = 0, l = nodes.length; i < l; i++) {
if (!result.includes(nodes[i])) {
result.push(nodes[i]);
}
}
return result;
}
function hasOverlappingIncludes(includes) {
var list = includes.slice();
while (list.length > 1) {
var last = list.pop();
if (list[list.length - 1].actualNode.contains(last.actualNode)) {
return true;
}
}
return false;
}
axe.utils.select = function select(selector, context) {
'use strict';
var result = [], candidate;
if (!Array.isArray(context.include)) {
context.include = Array.from(context.include);
}
context.include.sort(axe.utils.nodeSorter);
if (axe._selectCache) {
for (var j = 0, l = axe._selectCache.length; j < l; j++) {
var item = axe._selectCache[j];
if (item.selector === selector) {
return item.result;
}
}
}
var curried = function(context) {
return function(node) {
return isNodeInContext(node, context);
};
}(context);
for (var i = 0; i < context.include.length; i++) {
candidate = context.include[i];
if (candidate.actualNode.nodeType === candidate.actualNode.ELEMENT_NODE && axe.utils.matchesSelector(candidate.actualNode, selector) && curried(candidate)) {
result = pushNode(result, [ candidate ]);
}
result = pushNode(result, axe.utils.querySelectorAllFilter(candidate, selector, curried));
}
if (context.include.length > 1 && hasOverlappingIncludes(context.include)) {
result.sort(axe.utils.nodeSorter);
}
if (axe._selectCache) {
axe._selectCache.push({
selector: selector,
result: result
});
}
return result;
};
'use strict';
axe.utils.toArray = function(thing) {
'use strict';
return Array.prototype.slice.call(thing);
};
axe.utils.uniqueArray = function(arr1, arr2) {
return arr1.concat(arr2).filter(function(elem, pos, arr) {
return arr.indexOf(elem) === pos;
});
};
'use strict';
var uuid;
(function(_global) {
var _rng;
var _crypto = _global.crypto || _global.msCrypto;
if (!_rng && _crypto && _crypto.getRandomValues) {
var _rnds8 = new Uint8Array(16);
_rng = function whatwgRNG() {
_crypto.getRandomValues(_rnds8);
return _rnds8;
};
}
if (!_rng) {
var _rnds = new Array(16);
_rng = function _rng() {
for (var i = 0, r; i < 16; i++) {
if ((i & 3) === 0) {
r = Math.random() * 4294967296;
}
_rnds[i] = r >>> ((i & 3) << 3) & 255;
}
return _rnds;
};
}
var BufferClass = typeof _global.Buffer == 'function' ? _global.Buffer : Array;
var _byteToHex = [];
var _hexToByte = {};
for (var i = 0; i < 256; i++) {
_byteToHex[i] = (i + 256).toString(16).substr(1);
_hexToByte[_byteToHex[i]] = i;
}
function parse(s, buf, offset) {
var i = buf && offset || 0, ii = 0;
buf = buf || [];
s.toLowerCase().replace(/[0-9a-f]{2}/g, function(oct) {
if (ii < 16) {
buf[i + ii++] = _hexToByte[oct];
}
});
while (ii < 16) {
buf[i + ii++] = 0;
}
return buf;
}
function unparse(buf, offset) {
var i = offset || 0, bth = _byteToHex;
return bth[buf[i++]] + bth[buf[i++]] + bth[buf[i++]] + bth[buf[i++]] + '-' + bth[buf[i++]] + bth[buf[i++]] + '-' + bth[buf[i++]] + bth[buf[i++]] + '-' + bth[buf[i++]] + bth[buf[i++]] + '-' + bth[buf[i++]] + bth[buf[i++]] + bth[buf[i++]] + bth[buf[i++]] + bth[buf[i++]] + bth[buf[i++]];
}
var _seedBytes = _rng();
var _nodeId = [ _seedBytes[0] | 1, _seedBytes[1], _seedBytes[2], _seedBytes[3], _seedBytes[4], _seedBytes[5] ];
var _clockseq = (_seedBytes[6] << 8 | _seedBytes[7]) & 16383;
var _lastMSecs = 0, _lastNSecs = 0;
function v1(options, buf, offset) {
var i = buf && offset || 0;
var b = buf || [];
options = options || {};
var clockseq = options.clockseq != null ? options.clockseq : _clockseq;
var msecs = options.msecs != null ? options.msecs : new Date().getTime();
var nsecs = options.nsecs != null ? options.nsecs : _lastNSecs + 1;
var dt = msecs - _lastMSecs + (nsecs - _lastNSecs) / 1e4;
if (dt < 0 && options.clockseq == null) {
clockseq = clockseq + 1 & 16383;
}
if ((dt < 0 || msecs > _lastMSecs) && options.nsecs == null) {
nsecs = 0;
}
if (nsecs >= 1e4) {
throw new Error('uuid.v1(): Can\'t create more than 10M uuids/sec');
}
_lastMSecs = msecs;
_lastNSecs = nsecs;
_clockseq = clockseq;
msecs += 122192928e5;
var tl = ((msecs & 268435455) * 1e4 + nsecs) % 4294967296;
b[i++] = tl >>> 24 & 255;
b[i++] = tl >>> 16 & 255;
b[i++] = tl >>> 8 & 255;
b[i++] = tl & 255;
var tmh = msecs / 4294967296 * 1e4 & 268435455;
b[i++] = tmh >>> 8 & 255;
b[i++] = tmh & 255;
b[i++] = tmh >>> 24 & 15 | 16;
b[i++] = tmh >>> 16 & 255;
b[i++] = clockseq >>> 8 | 128;
b[i++] = clockseq & 255;
var node = options.node || _nodeId;
for (var n = 0; n < 6; n++) {
b[i + n] = node[n];
}
return buf ? buf : unparse(b);
}
function v4(options, buf, offset) {
var i = buf && offset || 0;
if (typeof options == 'string') {
buf = options == 'binary' ? new BufferClass(16) : null;
options = null;
}
options = options || {};
var rnds = options.random || (options.rng || _rng)();
rnds[6] = rnds[6] & 15 | 64;
rnds[8] = rnds[8] & 63 | 128;
if (buf) {
for (var ii = 0; ii < 16; ii++) {
buf[i + ii] = rnds[ii];
}
}
return buf || unparse(rnds);
}
uuid = v4;
uuid.v1 = v1;
uuid.v4 = v4;
uuid.parse = parse;
uuid.unparse = unparse;
uuid.BufferClass = BufferClass;
})(window);
'use strict';
axe._load({
data: {
rules: {
accesskeys: {
description: 'Ensures every accesskey attribute value is unique',
help: 'accesskey attribute value must be unique'
},
'area-alt': {
description: 'Ensures <area> elements of image maps have alternate text',
help: 'Active <area> elements must have alternate text'
},
'aria-allowed-attr': {
description: 'Ensures ARIA attributes are allowed for an element\'s role',
help: 'Elements must only use allowed ARIA attributes'
},
'aria-hidden-body': {
description: 'Ensures aria-hidden=\'true\' is not present on the document body.',
help: 'aria-hidden=\'true\' must not be present on the document body'
},
'aria-required-attr': {
description: 'Ensures elements with ARIA roles have all required ARIA attributes',
help: 'Required ARIA attributes must be provided'
},
'aria-required-children': {
description: 'Ensures elements with an ARIA role that require child roles contain them',
help: 'Certain ARIA roles must contain particular children'
},
'aria-required-parent': {
description: 'Ensures elements with an ARIA role that require parent roles are contained by them',
help: 'Certain ARIA roles must be contained by particular parents'
},
'aria-roles': {
description: 'Ensures all elements with a role attribute use a valid value',
help: 'ARIA roles used must conform to valid values'
},
'aria-valid-attr-value': {
description: 'Ensures all ARIA attributes have valid values',
help: 'ARIA attributes must conform to valid values'
},
'aria-valid-attr': {
description: 'Ensures attributes that begin with aria- are valid ARIA attributes',
help: 'ARIA attributes must conform to valid names'
},
'audio-caption': {
description: 'Ensures <audio> elements have captions',
help: '<audio> elements must have a captions track'
},
blink: {
description: 'Ensures <blink> elements are not used',
help: '<blink> elements are deprecated and must not be used'
},
'button-name': {
description: 'Ensures buttons have discernible text',
help: 'Buttons must have discernible text'
},
bypass: {
description: 'Ensures each page has at least one mechanism for a user to bypass navigation and jump straight to the content',
help: 'Page must have means to bypass repeated blocks'
},
checkboxgroup: {
description: 'Ensures related <input type="checkbox"> elements have a group and that that group designation is consistent',
help: 'Checkbox inputs with the same name attribute value must be part of a group'
},
'color-contrast': {
description: 'Ensures the contrast between foreground and background colors meets WCAG 2 AA contrast ratio thresholds',
help: 'Elements must have sufficient color contrast'
},
'definition-list': {
description: 'Ensures <dl> elements are structured correctly',
help: '<dl> elements must only directly contain properly-ordered <dt> and <dd> groups, <script> or <template> elements'
},
dlitem: {
description: 'Ensures <dt> and <dd> elements are contained by a <dl>',
help: '<dt> and <dd> elements must be contained by a <dl>'
},
'document-title': {
description: 'Ensures each HTML document contains a non-empty <title> element',
help: 'Documents must have <title> element to aid in navigation'
},
'duplicate-id': {
description: 'Ensures every id attribute value is unique',
help: 'id attribute value must be unique'
},
'empty-heading': {
description: 'Ensures headings have discernible text',
help: 'Headings must not be empty'
},
'focus-order-semantics': {
description: 'Ensures elements in the focus order have an appropriate role',
help: 'Elements in the focus order need a role appropriate for interactive content'
},
'frame-title-unique': {
description: 'Ensures <iframe> and <frame> elements contain a unique title attribute',
help: 'Frames must have a unique title attribute'
},
'frame-title': {
description: 'Ensures <iframe> and <frame> elements contain a non-empty title attribute',
help: 'Frames must have title attribute'
},
'heading-order': {
description: 'Ensures the order of headings is semantically correct',
help: 'Heading levels should only increase by one'
},
'hidden-content': {
description: 'Informs users about hidden content.',
help: 'Hidden content on the page cannot be analyzed'
},
'html-has-lang': {
description: 'Ensures every HTML document has a lang attribute',
help: '<html> element must have a lang attribute'
},
'html-lang-valid': {
description: 'Ensures the lang attribute of the <html> element has a valid value',
help: '<html> element must have a valid value for the lang attribute'
},
'image-alt': {
description: 'Ensures <img> elements have alternate text or a role of none or presentation',
help: 'Images must have alternate text'
},
'image-redundant-alt': {
description: 'Ensure button and link text is not repeated as image alternative',
help: 'Text of buttons and links should not be repeated in the image alternative'
},
'input-image-alt': {
description: 'Ensures <input type="image"> elements have alternate text',
help: 'Image buttons must have alternate text'
},
'label-title-only': {
description: 'Ensures that every form element is not solely labeled using the title or aria-describedby attributes',
help: 'Form elements should have a visible label'
},
label: {
description: 'Ensures every form element has a label',
help: 'Form elements must have labels'
},
'landmark-main-is-top-level': {
description: 'The main landmark should not be contained in another landmark',
help: 'Main landmark is not at top level'
},
'landmark-one-main': {
description: 'Ensures a navigation point to the primary content of the page. If the page contains iframes, each iframe should contain either no main landmarks or just one.',
help: 'Page must contain one main landmark.'
},
'layout-table': {
description: 'Ensures presentational <table> elements do not use <th>, <caption> elements or the summary attribute',
help: 'Layout tables must not use data table elements'
},
'link-in-text-block': {
description: 'Links can be distinguished without relying on color',
help: 'Links must be distinguished from surrounding text in a way that does not rely on color'
},
'link-name': {
description: 'Ensures links have discernible text',
help: 'Links must have discernible text'
},
list: {
description: 'Ensures that lists are structured correctly',
help: '<ul> and <ol> must only directly contain <li>, <script> or <template> elements'
},
listitem: {
description: 'Ensures <li> elements are used semantically',
help: '<li> elements must be contained in a <ul> or <ol>'
},
marquee: {
description: 'Ensures <marquee> elements are not used',
help: '<marquee> elements are deprecated and must not be used'
},
'meta-refresh': {
description: 'Ensures <meta http-equiv="refresh"> is not used',
help: 'Timed refresh must not exist'
},
'meta-viewport-large': {
description: 'Ensures <meta name="viewport"> can scale a significant amount',
help: 'Users should be able to zoom and scale the text up to 500%'
},
'meta-viewport': {
description: 'Ensures <meta name="viewport"> does not disable text scaling and zooming',
help: 'Zooming and scaling must not be disabled'
},
'object-alt': {
description: 'Ensures <object> elements have alternate text',
help: '<object> elements must have alternate text'
},
'p-as-heading': {
description: 'Ensure p elements are not used to style headings',
help: 'Bold, italic text and font-size are not used to style p elements as a heading'
},
radiogroup: {
description: 'Ensures related <input type="radio"> elements have a group and that the group designation is consistent',
help: 'Radio inputs with the same name attribute value must be part of a group'
},
region: {
description: 'Ensures all content is contained within a landmark region',
help: 'Content should be contained in a landmark region'
},
'scope-attr-valid': {
description: 'Ensures the scope attribute is used correctly on tables',
help: 'scope attribute should be used correctly'
},
'server-side-image-map': {
description: 'Ensures that server-side image maps are not used',
help: 'Server-side image maps must not be used'
},
'skip-link': {
description: 'Ensure all skip links have a focusable target',
help: 'The skip-link target should exist and be focusable'
},
tabindex: {
description: 'Ensures tabindex attribute values are not greater than 0',
help: 'Elements should not have tabindex greater than zero'
},
'table-duplicate-name': {
description: 'Ensure that tables do not have the same summary and caption',
help: 'The <caption> element should not contain the same text as the summary attribute'
},
'table-fake-caption': {
description: 'Ensure that tables with a caption use the <caption> element.',
help: 'Data or header cells should not be used to give caption to a data table.'
},
'td-has-header': {
description: 'Ensure that each non-empty data cell in a large table has one or more table headers',
help: 'All non-empty td element in table larger than 3 by 3 must have an associated table header'
},
'td-headers-attr': {
description: 'Ensure that each cell in a table using the headers refers to another cell in that table',
help: 'All cells in a table element that use the headers attribute must only refer to other cells of that same table'
},
'th-has-data-cells': {
description: 'Ensure that each table header in a data table refers to data cells',
help: 'All th elements and elements with role=columnheader/rowheader must have data cells they describe'
},
'valid-lang': {
description: 'Ensures lang attributes have valid values',
help: 'lang attribute must have a valid value'
},
'video-caption': {
description: 'Ensures <video> elements have captions',
help: '<video> elements must have captions'
},
'video-description': {
description: 'Ensures <video> elements have audio descriptions',
help: '<video> elements must have an audio description track'
}
},
checks: {
accesskeys: {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'Accesskey attribute value is unique';
return out;
},
fail: function anonymous(it) {
var out = 'Document has multiple elements with the same accesskey';
return out;
}
}
},
'non-empty-alt': {
impact: 'critical',
messages: {
pass: function anonymous(it) {
var out = 'Element has a non-empty alt attribute';
return out;
},
fail: function anonymous(it) {
var out = 'Element has no alt attribute or the alt attribute is empty';
return out;
}
}
},
'non-empty-title': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'Element has a title attribute';
return out;
},
fail: function anonymous(it) {
var out = 'Element has no title attribute or the title attribute is empty';
return out;
}
}
},
'aria-label': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'aria-label attribute exists and is not empty';
return out;
},
fail: function anonymous(it) {
var out = 'aria-label attribute does not exist or is empty';
return out;
}
}
},
'aria-labelledby': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'aria-labelledby attribute exists and references elements that are visible to screen readers';
return out;
},
fail: function anonymous(it) {
var out = 'aria-labelledby attribute does not exist, references elements that do not exist or references elements that are empty or not visible';
return out;
}
}
},
'aria-allowed-attr': {
impact: 'critical',
messages: {
pass: function anonymous(it) {
var out = 'ARIA attributes are used correctly for the defined role';
return out;
},
fail: function anonymous(it) {
var out = 'ARIA attribute' + (it.data && it.data.length > 1 ? 's are' : ' is') + ' not allowed:';
var arr1 = it.data;
if (arr1) {
var value, i1 = -1, l1 = arr1.length - 1;
while (i1 < l1) {
value = arr1[i1 += 1];
out += ' ' + value;
}
}
return out;
}
}
},
'aria-hidden-body': {
impact: 'critical',
messages: {
pass: function anonymous(it) {
var out = 'No aria-hidden attribute is present on document body';
return out;
},
fail: function anonymous(it) {
var out = 'aria-hidden=true should not be present on the document body';
return out;
}
}
},
'aria-required-attr': {
impact: 'critical',
messages: {
pass: function anonymous(it) {
var out = 'All required ARIA attributes are present';
return out;
},
fail: function anonymous(it) {
var out = 'Required ARIA attribute' + (it.data && it.data.length > 1 ? 's' : '') + ' not present:';
var arr1 = it.data;
if (arr1) {
var value, i1 = -1, l1 = arr1.length - 1;
while (i1 < l1) {
value = arr1[i1 += 1];
out += ' ' + value;
}
}
return out;
}
}
},
'aria-required-children': {
impact: 'critical',
messages: {
pass: function anonymous(it) {
var out = 'Required ARIA children are present';
return out;
},
fail: function anonymous(it) {
var out = 'Required ARIA ' + (it.data && it.data.length > 1 ? 'children' : 'child') + ' role not present:';
var arr1 = it.data;
if (arr1) {
var value, i1 = -1, l1 = arr1.length - 1;
while (i1 < l1) {
value = arr1[i1 += 1];
out += ' ' + value;
}
}
return out;
}
}
},
'aria-required-parent': {
impact: 'critical',
messages: {
pass: function anonymous(it) {
var out = 'Required ARIA parent role present';
return out;
},
fail: function anonymous(it) {
var out = 'Required ARIA parent' + (it.data && it.data.length > 1 ? 's' : '') + ' role not present:';
var arr1 = it.data;
if (arr1) {
var value, i1 = -1, l1 = arr1.length - 1;
while (i1 < l1) {
value = arr1[i1 += 1];
out += ' ' + value;
}
}
return out;
}
}
},
invalidrole: {
impact: 'critical',
messages: {
pass: function anonymous(it) {
var out = 'ARIA role is valid';
return out;
},
fail: function anonymous(it) {
var out = 'Role must be one of the valid ARIA roles';
return out;
}
}
},
abstractrole: {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'Abstract roles are not used';
return out;
},
fail: function anonymous(it) {
var out = 'Abstract roles cannot be directly used';
return out;
}
}
},
'aria-valid-attr-value': {
impact: 'critical',
messages: {
pass: function anonymous(it) {
var out = 'ARIA attribute values are valid';
return out;
},
fail: function anonymous(it) {
var out = 'Invalid ARIA attribute value' + (it.data && it.data.length > 1 ? 's' : '') + ':';
var arr1 = it.data;
if (arr1) {
var value, i1 = -1, l1 = arr1.length - 1;
while (i1 < l1) {
value = arr1[i1 += 1];
out += ' ' + value;
}
}
return out;
}
}
},
'aria-errormessage': {
impact: 'critical',
messages: {
pass: function anonymous(it) {
var out = 'Uses a supported aria-errormessage technique';
return out;
},
fail: function anonymous(it) {
var out = 'aria-errormessage value' + (it.data && it.data.length > 1 ? 's' : '') + ' ';
var arr1 = it.data;
if (arr1) {
var value, i1 = -1, l1 = arr1.length - 1;
while (i1 < l1) {
value = arr1[i1 += 1];
out += ' `' + value;
}
}
out += '` must use a technique to announce the message (e.g., aria-live, aria-describedby, role=alert, etc.)';
return out;
}
}
},
'aria-valid-attr': {
impact: 'critical',
messages: {
pass: function anonymous(it) {
var out = 'ARIA attribute name' + (it.data && it.data.length > 1 ? 's' : '') + ' are valid';
return out;
},
fail: function anonymous(it) {
var out = 'Invalid ARIA attribute name' + (it.data && it.data.length > 1 ? 's' : '') + ':';
var arr1 = it.data;
if (arr1) {
var value, i1 = -1, l1 = arr1.length - 1;
while (i1 < l1) {
value = arr1[i1 += 1];
out += ' ' + value;
}
}
return out;
}
}
},
caption: {
impact: 'critical',
messages: {
pass: function anonymous(it) {
var out = 'The multimedia element has a captions track';
return out;
},
fail: function anonymous(it) {
var out = 'The multimedia element does not have a captions track';
return out;
},
incomplete: function anonymous(it) {
var out = 'A captions track for this element could not be found';
return out;
}
}
},
'is-on-screen': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'Element is not visible';
return out;
},
fail: function anonymous(it) {
var out = 'Element is visible';
return out;
}
}
},
'non-empty-if-present': {
impact: 'critical',
messages: {
pass: function anonymous(it) {
var out = 'Element ';
if (it.data) {
out += 'has a non-empty value attribute';
} else {
out += 'does not have a value attribute';
}
return out;
},
fail: function anonymous(it) {
var out = 'Element has a value attribute and the value attribute is empty';
return out;
}
}
},
'non-empty-value': {
impact: 'critical',
messages: {
pass: function anonymous(it) {
var out = 'Element has a non-empty value attribute';
return out;
},
fail: function anonymous(it) {
var out = 'Element has no value attribute or the value attribute is empty';
return out;
}
}
},
'button-has-visible-text': {
impact: 'critical',
messages: {
pass: function anonymous(it) {
var out = 'Element has inner text that is visible to screen readers';
return out;
},
fail: function anonymous(it) {
var out = 'Element does not have inner text that is visible to screen readers';
return out;
}
}
},
'role-presentation': {
impact: 'minor',
messages: {
pass: function anonymous(it) {
var out = 'Element\'s default semantics were overriden with role="presentation"';
return out;
},
fail: function anonymous(it) {
var out = 'Element\'s default semantics were not overridden with role="presentation"';
return out;
}
}
},
'role-none': {
impact: 'minor',
messages: {
pass: function anonymous(it) {
var out = 'Element\'s default semantics were overriden with role="none"';
return out;
},
fail: function anonymous(it) {
var out = 'Element\'s default semantics were not overridden with role="none"';
return out;
}
}
},
'focusable-no-name': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'Element is not in tab order or has accessible text';
return out;
},
fail: function anonymous(it) {
var out = 'Element is in tab order and does not have accessible text';
return out;
}
}
},
'internal-link-present': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'Valid skip link found';
return out;
},
fail: function anonymous(it) {
var out = 'No valid skip link found';
return out;
}
}
},
'header-present': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'Page has a header';
return out;
},
fail: function anonymous(it) {
var out = 'Page does not have a header';
return out;
}
}
},
landmark: {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'Page has a landmark region';
return out;
},
fail: function anonymous(it) {
var out = 'Page does not have a landmark region';
return out;
}
}
},
'group-labelledby': {
impact: 'critical',
messages: {
pass: function anonymous(it) {
var out = 'All elements with the name "' + it.data.name + '" reference the same element with aria-labelledby';
return out;
},
fail: function anonymous(it) {
var out = 'All elements with the name "' + it.data.name + '" do not reference the same element with aria-labelledby';
return out;
}
}
},
fieldset: {
impact: 'critical',
messages: {
pass: function anonymous(it) {
var out = 'Element is contained in a fieldset';
return out;
},
fail: function anonymous(it) {
var out = '';
var code = it.data && it.data.failureCode;
if (code === 'no-legend') {
out += 'Fieldset does not have a legend as its first child';
} else if (code === 'empty-legend') {
out += 'Legend does not have text that is visible to screen readers';
} else if (code === 'mixed-inputs') {
out += 'Fieldset contains unrelated inputs';
} else if (code === 'no-group-label') {
out += 'ARIA group does not have aria-label or aria-labelledby';
} else if (code === 'group-mixed-inputs') {
out += 'ARIA group contains unrelated inputs';
} else {
out += 'Element does not have a containing fieldset or ARIA group';
}
return out;
}
}
},
'color-contrast': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'Element has sufficient color contrast of ' + it.data.contrastRatio;
return out;
},
fail: function anonymous(it) {
var out = 'Element has insufficient color contrast of ' + it.data.contrastRatio + ' (foreground color: ' + it.data.fgColor + ', background color: ' + it.data.bgColor + ', font size: ' + it.data.fontSize + ', font weight: ' + it.data.fontWeight + '). Expected contrast ratio of ' + it.data.expectedContrastRatio;
return out;
},
incomplete: {
bgImage: 'Element\'s background color could not be determined due to a background image',
bgGradient: 'Element\'s background color could not be determined due to a background gradient',
imgNode: 'Element\'s background color could not be determined because element contains an image node',
bgOverlap: 'Element\'s background color could not be determined because it is overlapped by another element',
fgAlpha: 'Element\'s foreground color could not be determined because of alpha transparency',
elmPartiallyObscured: 'Element\'s background color could not be determined because it\'s partially obscured by another element',
elmPartiallyObscuring: 'Element\'s background color could not be determined because it partially overlaps other elements',
outsideViewport: 'Element\'s background color could not be determined because it\'s outside the viewport',
equalRatio: 'Element has a 1:1 contrast ratio with the background',
default: 'Unable to determine contrast ratio'
}
}
},
'structured-dlitems': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'When not empty, element has both <dt> and <dd> elements';
return out;
},
fail: function anonymous(it) {
var out = 'When not empty, element does not have at least one <dt> element followed by at least one <dd> element';
return out;
}
}
},
'only-dlitems': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'List element only has direct children that are allowed inside <dt> or <dd> elements';
return out;
},
fail: function anonymous(it) {
var out = 'List element has direct children that are not allowed inside <dt> or <dd> elements';
return out;
}
}
},
dlitem: {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'Description list item has a <dl> parent element';
return out;
},
fail: function anonymous(it) {
var out = 'Description list item does not have a <dl> parent element';
return out;
}
}
},
'doc-has-title': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'Document has a non-empty <title> element';
return out;
},
fail: function anonymous(it) {
var out = 'Document does not have a non-empty <title> element';
return out;
}
}
},
'duplicate-id': {
impact: 'moderate',
messages: {
pass: function anonymous(it) {
var out = 'Document has no elements that share the same id attribute';
return out;
},
fail: function anonymous(it) {
var out = 'Document has multiple elements with the same id attribute: ' + it.data;
return out;
}
}
},
'has-visible-text': {
impact: 'minor',
messages: {
pass: function anonymous(it) {
var out = 'Element has text that is visible to screen readers';
return out;
},
fail: function anonymous(it) {
var out = 'Element does not have text that is visible to screen readers';
return out;
}
}
},
'has-widget-role': {
impact: 'minor',
messages: {
pass: function anonymous(it) {
var out = 'Element has a widget role.';
return out;
},
fail: function anonymous(it) {
var out = 'Element does not have a widget role.';
return out;
}
}
},
'valid-scrollable-semantics': {
impact: 'minor',
messages: {
pass: function anonymous(it) {
var out = 'Element has valid semantics for an element in the focus order.';
return out;
},
fail: function anonymous(it) {
var out = 'Element has invalid semantics for an element in the focus order.';
return out;
}
}
},
'unique-frame-title': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'Element\'s title attribute is unique';
return out;
},
fail: function anonymous(it) {
var out = 'Element\'s title attribute is not unique';
return out;
}
}
},
'heading-order': {
impact: 'moderate',
messages: {
pass: function anonymous(it) {
var out = 'Heading order valid';
return out;
},
fail: function anonymous(it) {
var out = 'Heading order invalid';
return out;
}
}
},
'hidden-content': {
impact: 'minor',
messages: {
pass: function anonymous(it) {
var out = 'All content on the page has been analyzed.';
return out;
},
fail: function anonymous(it) {
var out = 'There were problems analyzing the content on this page.';
return out;
},
incomplete: function anonymous(it) {
var out = 'There is hidden content on the page that was not analyzed. You will need to trigger the display of this content in order to analyze it.';
return out;
}
}
},
'has-lang': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'The <html> element has a lang attribute';
return out;
},
fail: function anonymous(it) {
var out = 'The <html> element does not have a lang attribute';
return out;
}
}
},
'valid-lang': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'Value of lang attribute is included in the list of valid languages';
return out;
},
fail: function anonymous(it) {
var out = 'Value of lang attribute not included in the list of valid languages';
return out;
}
}
},
'has-alt': {
impact: 'critical',
messages: {
pass: function anonymous(it) {
var out = 'Element has an alt attribute';
return out;
},
fail: function anonymous(it) {
var out = 'Element does not have an alt attribute';
return out;
}
}
},
'duplicate-img-label': {
impact: 'minor',
messages: {
pass: function anonymous(it) {
var out = 'Element does not duplicate existing text in <img> alt text';
return out;
},
fail: function anonymous(it) {
var out = 'Element contains <img> element with alt text that duplicates existing text';
return out;
}
}
},
'title-only': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'Form element does not solely use title attribute for its label';
return out;
},
fail: function anonymous(it) {
var out = 'Only title used to generate label for form element';
return out;
}
}
},
'implicit-label': {
impact: 'critical',
messages: {
pass: function anonymous(it) {
var out = 'Form element has an implicit (wrapped) <label>';
return out;
},
fail: function anonymous(it) {
var out = 'Form element does not have an implicit (wrapped) <label>';
return out;
}
}
},
'explicit-label': {
impact: 'critical',
messages: {
pass: function anonymous(it) {
var out = 'Form element has an explicit <label>';
return out;
},
fail: function anonymous(it) {
var out = 'Form element does not have an explicit <label>';
return out;
}
}
},
'help-same-as-label': {
impact: 'minor',
messages: {
pass: function anonymous(it) {
var out = 'Help text (title or aria-describedby) does not duplicate label text';
return out;
},
fail: function anonymous(it) {
var out = 'Help text (title or aria-describedby) text is the same as the label text';
return out;
}
}
},
'multiple-label': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'Form element does not have multiple <label> elements';
return out;
},
fail: function anonymous(it) {
var out = 'Form element has multiple <label> elements';
return out;
}
}
},
'main-is-top-level': {
impact: 'moderate',
messages: {
pass: function anonymous(it) {
var out = 'The main landmark is at the top level.';
return out;
},
fail: function anonymous(it) {
var out = 'The main landmark is contained in another landmark.';
return out;
}
}
},
'has-at-least-one-main': {
impact: 'moderate',
messages: {
pass: function anonymous(it) {
var out = 'Document has at least one main landmark';
return out;
},
fail: function anonymous(it) {
var out = 'Document has no main landmarks';
return out;
}
}
},
'has-no-more-than-one-main': {
impact: 'moderate',
messages: {
pass: function anonymous(it) {
var out = 'Document has no more than one main landmark';
return out;
},
fail: function anonymous(it) {
var out = 'Document has more than one main landmark';
return out;
}
}
},
'has-th': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'Layout table does not use <th> elements';
return out;
},
fail: function anonymous(it) {
var out = 'Layout table uses <th> elements';
return out;
}
}
},
'has-caption': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'Layout table does not use <caption> element';
return out;
},
fail: function anonymous(it) {
var out = 'Layout table uses <caption> element';
return out;
}
}
},
'has-summary': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'Layout table does not use summary attribute';
return out;
},
fail: function anonymous(it) {
var out = 'Layout table uses summary attribute';
return out;
}
}
},
'link-in-text-block': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'Links can be distinguished from surrounding text in a way that does not rely on color';
return out;
},
fail: function anonymous(it) {
var out = 'Links can not be distinguished from surrounding text in a way that does not rely on color';
return out;
},
incomplete: {
bgContrast: 'Element\'s contrast ratio could not be determined. Check for a distinct hover/focus style',
bgImage: 'Element\'s contrast ratio could not be determined due to a background image',
bgGradient: 'Element\'s contrast ratio could not be determined due to a background gradient',
imgNode: 'Element\'s contrast ratio could not be determined because element contains an image node',
bgOverlap: 'Element\'s contrast ratio could not be determined because of element overlap',
default: 'Unable to determine contrast ratio'
}
}
},
'only-listitems': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'List element only has direct children that are allowed inside <li> elements';
return out;
},
fail: function anonymous(it) {
var out = 'List element has direct children that are not allowed inside <li> elements';
return out;
}
}
},
listitem: {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'List item has a <ul>, <ol> or role="list" parent element';
return out;
},
fail: function anonymous(it) {
var out = 'List item does not have a <ul>, <ol> or role="list" parent element';
return out;
}
}
},
'meta-refresh': {
impact: 'critical',
messages: {
pass: function anonymous(it) {
var out = '<meta> tag does not immediately refresh the page';
return out;
},
fail: function anonymous(it) {
var out = '<meta> tag forces timed refresh of page';
return out;
}
}
},
'meta-viewport-large': {
impact: 'minor',
messages: {
pass: function anonymous(it) {
var out = '<meta> tag does not prevent significant zooming on mobile devices';
return out;
},
fail: function anonymous(it) {
var out = '<meta> tag limits zooming on mobile devices';
return out;
}
}
},
'meta-viewport': {
impact: 'critical',
messages: {
pass: function anonymous(it) {
var out = '<meta> tag does not disable zooming on mobile devices';
return out;
},
fail: function anonymous(it) {
var out = '<meta> tag disables zooming on mobile devices';
return out;
}
}
},
'p-as-heading': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = '<p> elements are not styled as headings';
return out;
},
fail: function anonymous(it) {
var out = 'Heading elements should be used instead of styled p elements';
return out;
}
}
},
region: {
impact: 'moderate',
messages: {
pass: function anonymous(it) {
var out = 'Content contained by ARIA landmark';
return out;
},
fail: function anonymous(it) {
var out = 'Content not contained by an ARIA landmark';
return out;
}
}
},
'html5-scope': {
impact: 'moderate',
messages: {
pass: function anonymous(it) {
var out = 'Scope attribute is only used on table header elements (<th>)';
return out;
},
fail: function anonymous(it) {
var out = 'In HTML 5, scope attributes may only be used on table header elements (<th>)';
return out;
}
}
},
'scope-value': {
impact: 'critical',
messages: {
pass: function anonymous(it) {
var out = 'Scope attribute is used correctly';
return out;
},
fail: function anonymous(it) {
var out = 'The value of the scope attribute may only be \'row\' or \'col\'';
return out;
}
}
},
exists: {
impact: 'minor',
messages: {
pass: function anonymous(it) {
var out = 'Element does not exist';
return out;
},
fail: function anonymous(it) {
var out = 'Element exists';
return out;
}
}
},
'skip-link': {
impact: 'moderate',
messages: {
pass: function anonymous(it) {
var out = 'Skip link target exists';
return out;
},
incomplete: function anonymous(it) {
var out = 'Skip link target should become visible on activation';
return out;
},
fail: function anonymous(it) {
var out = 'No skip link target';
return out;
}
}
},
tabindex: {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'Element does not have a tabindex greater than 0';
return out;
},
fail: function anonymous(it) {
var out = 'Element has a tabindex greater than 0';
return out;
}
}
},
'same-caption-summary': {
impact: 'minor',
messages: {
pass: function anonymous(it) {
var out = 'Content of summary attribute and <caption> are not duplicated';
return out;
},
fail: function anonymous(it) {
var out = 'Content of summary attribute and <caption> element are identical';
return out;
}
}
},
'caption-faked': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'The first row of a table is not used as a caption';
return out;
},
fail: function anonymous(it) {
var out = 'The first row of the table should be a caption instead of a table cell';
return out;
}
}
},
'td-has-header': {
impact: 'critical',
messages: {
pass: function anonymous(it) {
var out = 'All non-empty data cells have table headers';
return out;
},
fail: function anonymous(it) {
var out = 'Some non-empty data cells do not have table headers';
return out;
}
}
},
'td-headers-attr': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'The headers attribute is exclusively used to refer to other cells in the table';
return out;
},
fail: function anonymous(it) {
var out = 'The headers attribute is not exclusively used to refer to other cells in the table';
return out;
}
}
},
'th-has-data-cells': {
impact: 'serious',
messages: {
pass: function anonymous(it) {
var out = 'All table header cells refer to data cells';
return out;
},
fail: function anonymous(it) {
var out = 'Not all table header cells refer to data cells';
return out;
},
incomplete: function anonymous(it) {
var out = 'Table data cells are missing or empty';
return out;
}
}
},
description: {
impact: 'critical',
messages: {
pass: function anonymous(it) {
var out = 'The multimedia element has an audio description track';
return out;
},
fail: function anonymous(it) {
var out = 'The multimedia element does not have an audio description track';
return out;
},
incomplete: function anonymous(it) {
var out = 'An audio description track for this element could not be found';
return out;
}
}
}
},
failureSummaries: {
any: {
failureMessage: function anonymous(it) {
var out = 'Fix any of the following:';
var arr1 = it;
if (arr1) {
var value, i1 = -1, l1 = arr1.length - 1;
while (i1 < l1) {
value = arr1[i1 += 1];
out += '\n ' + value.split('\n').join('\n ');
}
}
return out;
}
},
none: {
failureMessage: function anonymous(it) {
var out = 'Fix all of the following:';
var arr1 = it;
if (arr1) {
var value, i1 = -1, l1 = arr1.length - 1;
while (i1 < l1) {
value = arr1[i1 += 1];
out += '\n ' + value.split('\n').join('\n ');
}
}
return out;
}
}
},
incompleteFallbackMessage: function anonymous(it) {
var out = 'aXe couldn\'t tell the reason. Time to break out the element inspector!';
return out;
}
},
rules: [ {
id: 'accesskeys',
selector: '[accesskey]',
excludeHidden: false,
tags: [ 'wcag2a', 'wcag211', 'cat.keyboard' ],
all: [],
any: [],
none: [ 'accesskeys' ]
}, {
id: 'area-alt',
selector: 'map area[href]',
excludeHidden: false,
tags: [ 'cat.text-alternatives', 'wcag2a', 'wcag111', 'section508', 'section508.22.a' ],
all: [],
any: [ 'non-empty-alt', 'non-empty-title', 'aria-label', 'aria-labelledby' ],
none: []
}, {
id: 'aria-allowed-attr',
matches: function matches(node, virtualNode) {
var role = node.getAttribute('role');
if (!role) {
role = axe.commons.aria.implicitRole(node);
}
var allowed = axe.commons.aria.allowedAttr(role);
if (role && allowed) {
var aria = /^aria-/;
if (node.hasAttributes()) {
var attrs = node.attributes;
for (var i = 0, l = attrs.length; i < l; i++) {
if (aria.test(attrs[i].name)) {
return true;
}
}
}
}
return false;
},
tags: [ 'cat.aria', 'wcag2a', 'wcag411', 'wcag412' ],
all: [],
any: [ 'aria-allowed-attr' ],
none: []
}, {
id: 'aria-hidden-body',
selector: 'body',
excludeHidden: false,
tags: [ 'cat.aria', 'wcag2a', 'wcag412' ],
all: [],
any: [ 'aria-hidden-body' ],
none: []
}, {
id: 'aria-required-attr',
selector: '[role]',
tags: [ 'cat.aria', 'wcag2a', 'wcag411', 'wcag412' ],
all: [],
any: [ 'aria-required-attr' ],
none: []
}, {
id: 'aria-required-children',
selector: '[role]',
tags: [ 'cat.aria', 'wcag2a', 'wcag131' ],
all: [],
any: [ 'aria-required-children' ],
none: []
}, {
id: 'aria-required-parent',
selector: '[role]',
tags: [ 'cat.aria', 'wcag2a', 'wcag131' ],
all: [],
any: [ 'aria-required-parent' ],
none: []
}, {
id: 'aria-roles',
selector: '[role]',
tags: [ 'cat.aria', 'wcag2a', 'wcag131', 'wcag411', 'wcag412' ],
all: [],
any: [],
none: [ 'invalidrole', 'abstractrole' ]
}, {
id: 'aria-valid-attr-value',
matches: function matches(node, virtualNode) {
var aria = /^aria-/;
if (node.hasAttributes()) {
var attrs = node.attributes;
for (var i = 0, l = attrs.length; i < l; i++) {
if (aria.test(attrs[i].name)) {
return true;
}
}
}
return false;
},
tags: [ 'cat.aria', 'wcag2a', 'wcag131', 'wcag411', 'wcag412' ],
all: [ {
options: [],
id: 'aria-valid-attr-value'
}, 'aria-errormessage' ],
any: [],
none: []
}, {
id: 'aria-valid-attr',
matches: function matches(node, virtualNode) {
var aria = /^aria-/;
if (node.hasAttributes()) {
var attrs = node.attributes;
for (var i = 0, l = attrs.length; i < l; i++) {
if (aria.test(attrs[i].name)) {
return true;
}
}
}
return false;
},
tags: [ 'cat.aria', 'wcag2a', 'wcag411' ],
all: [],
any: [ {
options: [],
id: 'aria-valid-attr'
} ],
none: []
}, {
id: 'audio-caption',
selector: 'audio',
excludeHidden: false,
tags: [ 'cat.time-and-media', 'wcag2a', 'wcag122', 'section508', 'section508.22.a' ],
all: [],
any: [],
none: [ 'caption' ]
}, {
id: 'blink',
selector: 'blink',
excludeHidden: false,
tags: [ 'cat.time-and-media', 'wcag2a', 'wcag222', 'section508', 'section508.22.j' ],
all: [],
any: [],
none: [ 'is-on-screen' ]
}, {
id: 'button-name',
selector: 'button, [role="button"], input[type="button"], input[type="submit"], input[type="reset"]',
tags: [ 'cat.name-role-value', 'wcag2a', 'wcag412', 'section508', 'section508.22.a' ],
all: [],
any: [ 'non-empty-if-present', 'non-empty-value', 'button-has-visible-text', 'aria-label', 'aria-labelledby', 'role-presentation', 'role-none' ],
none: [ 'focusable-no-name' ]
}, {
id: 'bypass',
selector: 'html',
pageLevel: true,
matches: function matches(node, virtualNode) {
return !!node.querySelector('a[href]');
},
tags: [ 'cat.keyboard', 'wcag2a', 'wcag241', 'section508', 'section508.22.o' ],
all: [],
any: [ 'internal-link-present', 'header-present', 'landmark' ],
none: []
}, {
id: 'checkboxgroup',
selector: 'input[type=checkbox][name]',
tags: [ 'cat.forms', 'best-practice' ],
all: [],
any: [ 'group-labelledby', 'fieldset' ],
none: []
}, {
id: 'color-contrast',
matches: function matches(node, virtualNode) {
var nodeName = node.nodeName.toUpperCase(), nodeType = node.type;
if (node.getAttribute('aria-disabled') === 'true' || axe.commons.dom.findUpVirtual(virtualNode, '[aria-disabled="true"]')) {
return false;
}
if (nodeName === 'INPUT') {
return [ 'hidden', 'range', 'color', 'checkbox', 'radio', 'image' ].indexOf(nodeType) === -1 && !node.disabled;
}
if (nodeName === 'SELECT') {
return !!node.options.length && !node.disabled;
}
if (nodeName === 'TEXTAREA') {
return !node.disabled;
}
if (nodeName === 'OPTION') {
return false;
}
if (nodeName === 'BUTTON' && node.disabled || axe.commons.dom.findUpVirtual(virtualNode, 'button[disabled]')) {
return false;
}
if (nodeName === 'FIELDSET' && node.disabled || axe.commons.dom.findUpVirtual(virtualNode, 'fieldset[disabled]')) {
return false;
}
var nodeParentLabel = axe.commons.dom.findUpVirtual(virtualNode, 'label');
if (nodeName === 'LABEL' || nodeParentLabel) {
var relevantNode = node;
var relevantVirtualNode = virtualNode;
if (nodeParentLabel) {
relevantNode = nodeParentLabel;
relevantVirtualNode = axe.utils.getNodeFromTree(axe._tree[0], nodeParentLabel);
}
var doc = axe.commons.dom.getRootNode(relevantNode);
var candidate = relevantNode.htmlFor && doc.getElementById(relevantNode.htmlFor);
if (candidate && candidate.disabled) {
return false;
}
var candidate = axe.utils.querySelectorAll(relevantVirtualNode, 'input:not([type="hidden"]):not([type="image"])' + ':not([type="button"]):not([type="submit"]):not([type="reset"]), select, textarea');
if (candidate.length && candidate[0].actualNode.disabled) {
return false;
}
}
if (node.getAttribute('id')) {
var id = axe.commons.utils.escapeSelector(node.getAttribute('id'));
var _doc = axe.commons.dom.getRootNode(node);
var candidate = _doc.querySelector('[aria-labelledby~=' + id + ']');
if (candidate && candidate.disabled) {
return false;
}
}
if (axe.commons.text.visibleVirtual(virtualNode, false, true) === '') {
return false;
}
var range = document.createRange(), childNodes = virtualNode.children, length = childNodes.length, child, index;
for (index = 0; index < length; index++) {
child = childNodes[index];
if (child.actualNode.nodeType === 3 && axe.commons.text.sanitize(child.actualNode.nodeValue) !== '') {
range.selectNodeContents(child.actualNode);
}
}
var rects = range.getClientRects();
length = rects.length;
for (index = 0; index < length; index++) {
if (axe.commons.dom.visuallyOverlaps(rects[index], node)) {
return true;
}
}
return false;
},
excludeHidden: false,
options: {
noScroll: false
},
tags: [ 'cat.color', 'wcag2aa', 'wcag143' ],
all: [],
any: [ 'color-contrast' ],
none: []
}, {
id: 'definition-list',
selector: 'dl',
matches: function matches(node, virtualNode) {
return !node.getAttribute('role');
},
tags: [ 'cat.structure', 'wcag2a', 'wcag131' ],
all: [],
any: [],
none: [ 'structured-dlitems', 'only-dlitems' ]
}, {
id: 'dlitem',
selector: 'dd, dt',
matches: function matches(node, virtualNode) {
return !node.getAttribute('role');
},
tags: [ 'cat.structure', 'wcag2a', 'wcag131' ],
all: [],
any: [ 'dlitem' ],
none: []
}, {
id: 'document-title',
selector: 'html',
matches: function matches(node, virtualNode) {
return node.ownerDocument.defaultView.self === node.ownerDocument.defaultView.top;
},
tags: [ 'cat.text-alternatives', 'wcag2a', 'wcag242' ],
all: [],
any: [ 'doc-has-title' ],
none: []
}, {
id: 'duplicate-id',
selector: '[id]',
excludeHidden: false,
tags: [ 'cat.parsing', 'wcag2a', 'wcag411' ],
all: [],
any: [ 'duplicate-id' ],
none: []
}, {
id: 'empty-heading',
selector: 'h1, h2, h3, h4, h5, h6, [role="heading"]',
tags: [ 'cat.name-role-value', 'best-practice' ],
all: [],
any: [ 'has-visible-text', 'role-presentation', 'role-none' ],
none: []
}, {
id: 'focus-order-semantics',
selector: 'div, h1, h2, h3, h4, h5, h6, [role=heading], p, span',
matches: function matches(node, virtualNode) {
return axe.commons.dom.insertedIntoFocusOrder(node);
},
tags: [ 'cat.keyboard', 'best-practice', 'experimental' ],
all: [],
any: [ {
options: [],
id: 'has-widget-role'
}, {
options: [],
id: 'valid-scrollable-semantics'
} ],
none: []
}, {
id: 'frame-title-unique',
selector: 'frame[title], iframe[title]',
matches: function matches(node, virtualNode) {
var title = node.getAttribute('title');
return !!(title ? axe.commons.text.sanitize(title).trim() : '');
},
tags: [ 'cat.text-alternatives', 'best-practice' ],
all: [],
any: [],
none: [ 'unique-frame-title' ]
}, {
id: 'frame-title',
selector: 'frame, iframe',
tags: [ 'cat.text-alternatives', 'wcag2a', 'wcag241', 'section508', 'section508.22.i' ],
all: [],
any: [ 'aria-label', 'aria-labelledby', 'non-empty-title', 'role-presentation', 'role-none' ],
none: []
}, {
id: 'heading-order',
selector: 'h1,h2,h3,h4,h5,h6,[role=heading]',
tags: [ 'cat.semantics', 'best-practice' ],
all: [],
any: [ 'heading-order' ],
none: []
}, {
id: 'hidden-content',
selector: '*',
excludeHidden: false,
tags: [ 'experimental', 'review-item' ],
all: [],
any: [ 'hidden-content' ],
none: []
}, {
id: 'html-has-lang',
selector: 'html',
tags: [ 'cat.language', 'wcag2a', 'wcag311' ],
all: [],
any: [ 'has-lang' ],
none: []
}, {
id: 'html-lang-valid',
selector: 'html[lang]',
tags: [ 'cat.language', 'wcag2a', 'wcag311' ],
all: [],
any: [],
none: [ 'valid-lang' ]
}, {
id: 'image-alt',
selector: 'img, [role=\'img\']:not(svg)',
tags: [ 'cat.text-alternatives', 'wcag2a', 'wcag111', 'section508', 'section508.22.a' ],
all: [],
any: [ 'has-alt', 'aria-label', 'aria-labelledby', 'non-empty-title', 'role-presentation', 'role-none' ],
none: []
}, {
id: 'image-redundant-alt',
selector: 'button, [role="button"], a[href], p, li, td, th',
tags: [ 'cat.text-alternatives', 'best-practice' ],
all: [],
any: [],
none: [ 'duplicate-img-label' ]
}, {
id: 'input-image-alt',
selector: 'input[type="image"]',
tags: [ 'cat.text-alternatives', 'wcag2a', 'wcag111', 'section508', 'section508.22.a' ],
all: [],
any: [ 'non-empty-alt', 'aria-label', 'aria-labelledby', 'non-empty-title' ],
none: []
}, {
id: 'label-title-only',
selector: 'input, select, textarea',
matches: function matches(node, virtualNode) {
if (node.nodeName.toLowerCase() !== 'input') {
return true;
}
var t = node.getAttribute('type').toLowerCase();
if (t === 'hidden' || t === 'image' || t === 'button' || t === 'submit' || t === 'reset') {
return false;
}
return true;
},
tags: [ 'cat.forms', 'best-practice' ],
all: [],
any: [],
none: [ 'title-only' ]
}, {
id: 'label',
selector: 'input, select, textarea',
matches: function matches(node, virtualNode) {
if (node.nodeName.toLowerCase() !== 'input') {
return true;
}
var t = node.getAttribute('type').toLowerCase();
if (t === 'hidden' || t === 'image' || t === 'button' || t === 'submit' || t === 'reset') {
return false;
}
return true;
},
tags: [ 'cat.forms', 'wcag2a', 'wcag332', 'wcag131', 'section508', 'section508.22.n' ],
all: [],
any: [ 'aria-label', 'aria-labelledby', 'implicit-label', 'explicit-label', 'non-empty-title' ],
none: [ 'help-same-as-label', 'multiple-label' ]
}, {
id: 'landmark-main-is-top-level',
selector: 'main,[role=main]',
tags: [ 'best-practice' ],
all: [],
any: [ 'main-is-top-level' ],
none: []
}, {
id: 'landmark-one-main',
selector: 'html',
tags: [ 'best-practice' ],
all: [ 'has-at-least-one-main', 'has-no-more-than-one-main' ],
any: [],
none: []
}, {
id: 'layout-table',
selector: 'table',
matches: function matches(node, virtualNode) {
return !axe.commons.table.isDataTable(node);
},
tags: [ 'cat.semantics', 'wcag2a', 'wcag131' ],
all: [],
any: [],
none: [ 'has-th', 'has-caption', 'has-summary' ]
}, {
id: 'link-in-text-block',
selector: 'a[href], *[role=link]',
matches: function matches(node, virtualNode) {
var text = axe.commons.text.sanitize(node.textContent);
var role = node.getAttribute('role');
if (role && role !== 'link') {
return false;
}
if (!text) {
return false;
}
if (!axe.commons.dom.isVisible(node, false)) {
return false;
}
return axe.commons.dom.isInTextBlock(node);
},
excludeHidden: false,
tags: [ 'cat.color', 'experimental', 'wcag2a', 'wcag141' ],
all: [ 'link-in-text-block' ],
any: [],
none: []
}, {
id: 'link-name',
selector: 'a[href], [role=link][href]',
matches: function matches(node, virtualNode) {
return node.getAttribute('role') !== 'button';
},
tags: [ 'cat.name-role-value', 'wcag2a', 'wcag111', 'wcag412', 'wcag244', 'section508', 'section508.22.a' ],
all: [],
any: [ 'has-visible-text', 'aria-label', 'aria-labelledby', 'role-presentation', 'role-none' ],
none: [ 'focusable-no-name' ]
}, {
id: 'list',
selector: 'ul, ol',
matches: function matches(node, virtualNode) {
return !node.getAttribute('role');
},
tags: [ 'cat.structure', 'wcag2a', 'wcag131' ],
all: [],
any: [],
none: [ 'only-listitems' ]
}, {
id: 'listitem',
selector: 'li',
matches: function matches(node, virtualNode) {
return !node.getAttribute('role');
},
tags: [ 'cat.structure', 'wcag2a', 'wcag131' ],
all: [],
any: [ 'listitem' ],
none: []
}, {
id: 'marquee',
selector: 'marquee',
excludeHidden: false,
tags: [ 'cat.parsing', 'wcag2a', 'wcag222' ],
all: [],
any: [],
none: [ 'is-on-screen' ]
}, {
id: 'meta-refresh',
selector: 'meta[http-equiv="refresh"]',
excludeHidden: false,
tags: [ 'cat.time', 'wcag2a', 'wcag2aaa', 'wcag221', 'wcag224', 'wcag325' ],
all: [],
any: [ 'meta-refresh' ],
none: []
}, {
id: 'meta-viewport-large',
selector: 'meta[name="viewport"]',
excludeHidden: false,
tags: [ 'cat.sensory-and-visual-cues', 'best-practice' ],
all: [],
any: [ {
options: {
scaleMinimum: 5,
lowerBound: 2
},
id: 'meta-viewport-large'
} ],
none: []
}, {
id: 'meta-viewport',
selector: 'meta[name="viewport"]',
excludeHidden: false,
tags: [ 'cat.sensory-and-visual-cues', 'wcag2aa', 'wcag144' ],
all: [],
any: [ {
options: {
scaleMinimum: 2
},
id: 'meta-viewport'
} ],
none: []
}, {
id: 'object-alt',
selector: 'object',
tags: [ 'cat.text-alternatives', 'wcag2a', 'wcag111', 'section508', 'section508.22.a' ],
all: [],
any: [ 'has-visible-text', 'aria-label', 'aria-labelledby', 'non-empty-title' ],
none: []
}, {
id: 'p-as-heading',
selector: 'p',
matches: function matches(node, virtualNode) {
var children = Array.from(node.parentNode.childNodes);
var nodeText = node.textContent.trim();
var isSentence = /[.!?:;](?![.!?:;])/g;
if (nodeText.length === 0 || (nodeText.match(isSentence) || []).length >= 2) {
return false;
}
var siblingsAfter = children.slice(children.indexOf(node) + 1).filter(function(elm) {
return elm.nodeName.toUpperCase() === 'P' && elm.textContent.trim() !== '';
});
return siblingsAfter.length !== 0;
},
tags: [ 'cat.semantics', 'wcag2a', 'wcag131', 'experimental' ],
all: [ {
options: {
margins: [ {
weight: 150,
italic: true
}, {
weight: 150,
size: 1.15
}, {
italic: true,
size: 1.15
}, {
size: 1.4
} ]
},
id: 'p-as-heading'
} ],
any: [],
none: []
}, {
id: 'radiogroup',
selector: 'input[type=radio][name]',
tags: [ 'cat.forms', 'best-practice' ],
all: [],
any: [ 'group-labelledby', 'fieldset' ],
none: []
}, {
id: 'region',
selector: 'html',
pageLevel: true,
tags: [ 'cat.keyboard', 'best-practice' ],
all: [],
any: [ 'region' ],
none: []
}, {
id: 'scope-attr-valid',
selector: 'td[scope], th[scope]',
tags: [ 'cat.tables', 'best-practice' ],
all: [ 'html5-scope', 'scope-value' ],
any: [],
none: []
}, {
id: 'server-side-image-map',
selector: 'img[ismap]',
tags: [ 'cat.text-alternatives', 'wcag2a', 'wcag211', 'section508', 'section508.22.f' ],
all: [],
any: [],
none: [ 'exists' ]
}, {
id: 'skip-link',
selector: 'a[href]',
matches: function matches(node, virtualNode) {
var href = node.getAttribute('href');
return href[0] === '#' && href.length > 1;
},
tags: [ 'cat.keyboard', 'best-practice' ],
all: [],
any: [ 'skip-link' ],
none: []
}, {
id: 'tabindex',
selector: '[tabindex]',
tags: [ 'cat.keyboard', 'best-practice' ],
all: [],
any: [ 'tabindex' ],
none: []
}, {
id: 'table-duplicate-name',
selector: 'table',
tags: [ 'cat.tables', 'best-practice' ],
all: [],
any: [],
none: [ 'same-caption-summary' ]
}, {
id: 'table-fake-caption',
selector: 'table',
matches: function matches(node, virtualNode) {
return axe.commons.table.isDataTable(node);
},
tags: [ 'cat.tables', 'experimental', 'wcag2a', 'wcag131', 'section508', 'section508.22.g' ],
all: [ 'caption-faked' ],
any: [],
none: []
}, {
id: 'td-has-header',
selector: 'table',
matches: function matches(node, virtualNode) {
if (axe.commons.table.isDataTable(node)) {
var tableArray = axe.commons.table.toArray(node);
return tableArray.length >= 3 && tableArray[0].length >= 3 && tableArray[1].length >= 3 && tableArray[2].length >= 3;
}
return false;
},
tags: [ 'cat.tables', 'experimental', 'wcag2a', 'wcag131', 'section508', 'section508.22.g' ],
all: [ 'td-has-header' ],
any: [],
none: []
}, {
id: 'td-headers-attr',
selector: 'table',
tags: [ 'cat.tables', 'wcag2a', 'wcag131', 'section508', 'section508.22.g' ],
all: [ 'td-headers-attr' ],
any: [],
none: []
}, {
id: 'th-has-data-cells',
selector: 'table',
matches: function matches(node, virtualNode) {
return axe.commons.table.isDataTable(node);
},
tags: [ 'cat.tables', 'wcag2a', 'wcag131', 'section508', 'section508.22.g' ],
all: [ 'th-has-data-cells' ],
any: [],
none: []
}, {
id: 'valid-lang',
selector: '[lang], [xml\\:lang]',
matches: function matches(node, virtualNode) {
return node.nodeName.toLowerCase() !== 'html';
},
tags: [ 'cat.language', 'wcag2aa', 'wcag312' ],
all: [],
any: [],
none: [ 'valid-lang' ]
}, {
id: 'video-caption',
selector: 'video',
excludeHidden: false,
tags: [ 'cat.text-alternatives', 'wcag2a', 'wcag122', 'wcag123', 'section508', 'section508.22.a' ],
all: [],
any: [],
none: [ 'caption' ]
}, {
id: 'video-description',
selector: 'video',
excludeHidden: false,
tags: [ 'cat.text-alternatives', 'wcag2aa', 'wcag125', 'section508', 'section508.22.b' ],
all: [],
any: [],
none: [ 'description' ]
} ],
checks: [ {
id: 'abstractrole',
evaluate: function evaluate(node, options, virtualNode) {
return axe.commons.aria.getRoleType(node.getAttribute('role')) === 'abstract';
}
}, {
id: 'aria-allowed-attr',
evaluate: function evaluate(node, options, virtualNode) {
options = options || {};
var invalid = [];
var attr, attrName, allowed, role = node.getAttribute('role'), attrs = node.attributes;
if (!role) {
role = axe.commons.aria.implicitRole(node);
}
allowed = axe.commons.aria.allowedAttr(role);
if (Array.isArray(options[role])) {
allowed = axe.utils.uniqueArray(options[role].concat(allowed));
}
if (role && allowed) {
for (var i = 0, l = attrs.length; i < l; i++) {
attr = attrs[i];
attrName = attr.name;
if (axe.commons.aria.validateAttr(attrName) && !allowed.includes(attrName)) {
invalid.push(attrName + '="' + attr.nodeValue + '"');
}
}
}
if (invalid.length) {
this.data(invalid);
return false;
}
return true;
}
}, {
id: 'aria-hidden-body',
evaluate: function evaluate(node, options, virtualNode) {
return node.getAttribute('aria-hidden') !== 'true';
}
}, {
id: 'aria-errormessage',
evaluate: function evaluate(node, options, virtualNode) {
options = Array.isArray(options) ? options : [];
var attr = node.getAttribute('aria-errormessage'), hasAttr = node.hasAttribute('aria-errormessage');
var doc = axe.commons.dom.getRootNode(node);
function validateAttrValue() {
var idref = attr && doc.getElementById(attr);
if (idref) {
return idref.getAttribute('role') === 'alert' || idref.getAttribute('aria-live') === 'assertive' || axe.utils.tokenList(node.getAttribute('aria-describedby') || '').indexOf(attr) > -1;
}
}
if (options.indexOf(attr) === -1 && hasAttr) {
if (!validateAttrValue()) {
this.data(attr);
return false;
}
}
return true;
}
}, {
id: 'has-widget-role',
evaluate: function evaluate(node, options, virtualNode) {
var role = node.getAttribute('role');
if (role === null) {
return false;
}
var roleType = axe.commons.aria.getRoleType(role);
return roleType === 'widget' || roleType === 'composite';
},
options: []
}, {
id: 'invalidrole',
evaluate: function evaluate(node, options, virtualNode) {
return !axe.commons.aria.isValidRole(node.getAttribute('role'));
}
}, {
id: 'aria-required-attr',
evaluate: function evaluate(node, options, virtualNode) {
options = options || {};
var missing = [];
if (node.hasAttributes()) {
var attr, role = node.getAttribute('role'), required = axe.commons.aria.requiredAttr(role);
if (Array.isArray(options[role])) {
required = axe.utils.uniqueArray(options[role], required);
}
if (role && required) {
for (var i = 0, l = required.length; i < l; i++) {
attr = required[i];
if (!node.getAttribute(attr)) {
missing.push(attr);
}
}
}
}
if (missing.length) {
this.data(missing);
return false;
}
return true;
}
}, {
id: 'aria-required-children',
evaluate: function evaluate(node, options, virtualNode) {
var requiredOwned = axe.commons.aria.requiredOwned, implicitNodes = axe.commons.aria.implicitNodes, matchesSelector = axe.commons.utils.matchesSelector, idrefs = axe.commons.dom.idrefs;
function owns(node, virtualTree, role, ariaOwned) {
if (node === null) {
return false;
}
var implicit = implicitNodes(role), selector = [ '[role="' + role + '"]' ];
if (implicit) {
selector = selector.concat(implicit);
}
selector = selector.join(',');
return ariaOwned ? matchesSelector(node, selector) || !!axe.utils.querySelectorAll(virtualTree, selector)[0] : !!axe.utils.querySelectorAll(virtualTree, selector)[0];
}
function ariaOwns(nodes, role) {
var index, length;
for (index = 0, length = nodes.length; index < length; index++) {
if (nodes[index] === null) {
continue;
}
var virtualTree = axe.utils.getNodeFromTree(axe._tree[0], nodes[index]);
if (owns(nodes[index], virtualTree, role, true)) {
return true;
}
}
return false;
}
function missingRequiredChildren(node, childRoles, all, role) {
var i, l = childRoles.length, missing = [], ownedElements = idrefs(node, 'aria-owns');
for (i = 0; i < l; i++) {
var r = childRoles[i];
if (owns(node, virtualNode, r) || ariaOwns(ownedElements, r)) {
if (!all) {
return null;
}
} else {
if (all) {
missing.push(r);
}
}
}
if (role === 'combobox') {
var textboxIndex = missing.indexOf('textbox');
var textTypeInputs = [ 'text', 'search', 'email', 'url', 'tel' ];
if (textboxIndex >= 0 && node.tagName === 'INPUT' && textTypeInputs.includes(node.type)) {
missing.splice(textboxIndex, 1);
}
var listboxIndex = missing.indexOf('listbox');
var expanded = node.getAttribute('aria-expanded');
if (listboxIndex >= 0 && (!expanded || expanded === 'false')) {
missing.splice(listboxIndex, 1);
}
}
if (missing.length) {
return missing;
}
if (!all && childRoles.length) {
return childRoles;
}
return null;
}
var role = node.getAttribute('role');
var required = requiredOwned(role);
if (!required) {
return true;
}
var all = false;
var childRoles = required.one;
if (!childRoles) {
var all = true;
childRoles = required.all;
}
var missing = missingRequiredChildren(node, childRoles, all, role);
if (!missing) {
return true;
}
this.data(missing);
return false;
}
}, {
id: 'aria-required-parent',
evaluate: function evaluate(node, options, virtualNode) {
function getSelector(role) {
var impliedNative = axe.commons.aria.implicitNodes(role) || [];
return impliedNative.concat('[role="' + role + '"]').join(',');
}
function getMissingContext(virtualNode, requiredContext, includeElement) {
var index, length, role = virtualNode.actualNode.getAttribute('role'), missing = [];
if (!requiredContext) {
requiredContext = axe.commons.aria.requiredContext(role);
}
if (!requiredContext) {
return null;
}
for (index = 0, length = requiredContext.length; index < length; index++) {
if (includeElement && axe.utils.matchesSelector(virtualNode.actualNode, getSelector(requiredContext[index]))) {
return null;
}
if (axe.commons.dom.findUpVirtual(virtualNode, getSelector(requiredContext[index]))) {
return null;
} else {
missing.push(requiredContext[index]);
}
}
return missing;
}
function getAriaOwners(element) {
var owners = [], o = null;
while (element) {
if (element.getAttribute('id')) {
var id = axe.commons.utils.escapeSelector(element.getAttribute('id'));
var doc = axe.commons.dom.getRootNode(element);
o = doc.querySelector('[aria-owns~=' + id + ']');
if (o) {
owners.push(o);
}
}
element = element.parentElement;
}
return owners.length ? owners : null;
}
var missingParents = getMissingContext(virtualNode);
if (!missingParents) {
return true;
}
var owners = getAriaOwners(node);
if (owners) {
for (var i = 0, l = owners.length; i < l; i++) {
missingParents = getMissingContext(axe.utils.getNodeFromTree(axe._tree[0], owners[i]), missingParents, true);
if (!missingParents) {
return true;
}
}
}
this.data(missingParents);
return false;
}
}, {
id: 'aria-valid-attr-value',
evaluate: function evaluate(node, options, virtualNode) {
options = Array.isArray(options) ? options : [];
var invalid = [], aria = /^aria-/;
var attr, attrName, attrs = node.attributes;
var skipAttrs = [ 'aria-errormessage' ];
for (var i = 0, l = attrs.length; i < l; i++) {
attr = attrs[i];
attrName = attr.name;
if (!skipAttrs.includes(attrName)) {
if (options.indexOf(attrName) === -1 && aria.test(attrName) && !axe.commons.aria.validateAttrValue(node, attrName)) {
invalid.push(attrName + '="' + attr.nodeValue + '"');
}
}
}
if (invalid.length) {
this.data(invalid);
return false;
}
return true;
},
options: []
}, {
id: 'aria-valid-attr',
evaluate: function evaluate(node, options, virtualNode) {
options = Array.isArray(options) ? options : [];
var invalid = [], aria = /^aria-/;
var attr, attrs = node.attributes;
for (var i = 0, l = attrs.length; i < l; i++) {
attr = attrs[i].name;
if (options.indexOf(attr) === -1 && aria.test(attr) && !axe.commons.aria.validateAttr(attr)) {
invalid.push(attr);
}
}
if (invalid.length) {
this.data(invalid);
return false;
}
return true;
},
options: []
}, {
id: 'valid-scrollable-semantics',
evaluate: function evaluate(node, options, virtualNode) {
var VALID_TAG_NAMES_FOR_SCROLLABLE_REGIONS = {
ARTICLE: true,
ASIDE: true,
NAV: true,
SECTION: true
};
var VALID_ROLES_FOR_SCROLLABLE_REGIONS = {
banner: false,
complementary: true,
contentinfo: true,
form: true,
main: true,
navigation: true,
region: true,
search: false
};
function validScrollableTagName(node) {
var tagName = node.tagName.toUpperCase();
return VALID_TAG_NAMES_FOR_SCROLLABLE_REGIONS[tagName] || false;
}
function validScrollableRole(node) {
var role = node.getAttribute('role');
if (!role) {
return false;
}
return VALID_ROLES_FOR_SCROLLABLE_REGIONS[role.toLowerCase()] || false;
}
function validScrollableSemantics(node) {
return validScrollableRole(node) || validScrollableTagName(node);
}
return validScrollableSemantics(node);
},
options: []
}, {
id: 'color-contrast',
evaluate: function evaluate(node, options, virtualNode) {
if (!axe.commons.dom.isVisible(node, false)) {
return true;
}
var noScroll = !!(options || {}).noScroll;
var bgNodes = [], bgColor = axe.commons.color.getBackgroundColor(node, bgNodes, noScroll), fgColor = axe.commons.color.getForegroundColor(node, noScroll);
var nodeStyle = window.getComputedStyle(node);
var fontSize = parseFloat(nodeStyle.getPropertyValue('font-size'));
var fontWeight = nodeStyle.getPropertyValue('font-weight');
var bold = [ 'bold', 'bolder', '600', '700', '800', '900' ].indexOf(fontWeight) !== -1;
var cr = axe.commons.color.hasValidContrastRatio(bgColor, fgColor, fontSize, bold);
var truncatedResult = Math.floor(cr.contrastRatio * 100) / 100;
var missing;
if (bgColor === null) {
missing = axe.commons.color.incompleteData.get('bgColor');
}
var equalRatio = false;
if (truncatedResult === 1) {
equalRatio = true;
missing = axe.commons.color.incompleteData.set('bgColor', 'equalRatio');
}
var data = {
fgColor: fgColor ? fgColor.toHexString() : undefined,
bgColor: bgColor ? bgColor.toHexString() : undefined,
contrastRatio: cr ? truncatedResult : undefined,
fontSize: (fontSize * 72 / 96).toFixed(1) + 'pt',
fontWeight: bold ? 'bold' : 'normal',
missingData: missing,
expectedContrastRatio: cr.expectedContrastRatio + ':1'
};
this.data(data);
if (fgColor === null || bgColor === null || equalRatio) {
missing = null;
axe.commons.color.incompleteData.clear();
this.relatedNodes(bgNodes);
return undefined;
} else if (!cr.isValid) {
this.relatedNodes(bgNodes);
}
return cr.isValid;
}
}, {
id: 'link-in-text-block',
evaluate: function evaluate(node, options, virtualNode) {
var _axe$commons = axe.commons, color = _axe$commons.color, dom = _axe$commons.dom;
function getContrast(color1, color2) {
var c1lum = color1.getRelativeLuminance();
var c2lum = color2.getRelativeLuminance();
return (Math.max(c1lum, c2lum) + .05) / (Math.min(c1lum, c2lum) + .05);
}
var blockLike = [ 'block', 'list-item', 'table', 'flex', 'grid', 'inline-block' ];
function isBlock(elm) {
var display = window.getComputedStyle(elm).getPropertyValue('display');
return blockLike.indexOf(display) !== -1 || display.substr(0, 6) === 'table-';
}
if (isBlock(node)) {
return false;
}
var parentBlock = dom.getComposedParent(node);
while (parentBlock.nodeType === 1 && !isBlock(parentBlock)) {
parentBlock = dom.getComposedParent(parentBlock);
}
this.relatedNodes([ parentBlock ]);
if (color.elementIsDistinct(node, parentBlock)) {
return true;
} else {
var nodeColor, parentColor;
nodeColor = color.getForegroundColor(node);
parentColor = color.getForegroundColor(parentBlock);
if (!nodeColor || !parentColor) {
return undefined;
}
var contrast = getContrast(nodeColor, parentColor);
if (contrast === 1) {
return true;
} else if (contrast >= 3) {
axe.commons.color.incompleteData.set('fgColor', 'bgContrast');
this.data({
missingData: axe.commons.color.incompleteData.get('fgColor')
});
axe.commons.color.incompleteData.clear();
return undefined;
}
nodeColor = color.getBackgroundColor(node);
parentColor = color.getBackgroundColor(parentBlock);
if (!nodeColor || !parentColor || getContrast(nodeColor, parentColor) >= 3) {
var reason = void 0;
if (!nodeColor || !parentColor) {
reason = axe.commons.color.incompleteData.get('bgColor');
} else {
reason = 'bgContrast';
}
axe.commons.color.incompleteData.set('fgColor', reason);
this.data({
missingData: axe.commons.color.incompleteData.get('fgColor')
});
axe.commons.color.incompleteData.clear();
return undefined;
}
}
return false;
}
}, {
id: 'fieldset',
evaluate: function evaluate(node, options, virtualNode) {
var failureCode, self = this;
function getUnrelatedElements(parent, name) {
return axe.commons.utils.toArray(parent.querySelectorAll('select,textarea,button,input:not([name="' + name + '"]):not([type="hidden"])'));
}
function checkFieldset(group, name) {
var firstNode = group.firstElementChild;
if (!firstNode || firstNode.nodeName.toUpperCase() !== 'LEGEND') {
self.relatedNodes([ group ]);
failureCode = 'no-legend';
return false;
}
if (!axe.commons.text.accessibleText(firstNode)) {
self.relatedNodes([ firstNode ]);
failureCode = 'empty-legend';
return false;
}
var otherElements = getUnrelatedElements(group, name);
if (otherElements.length) {
self.relatedNodes(otherElements);
failureCode = 'mixed-inputs';
return false;
}
return true;
}
function checkARIAGroup(group, name) {
var hasLabelledByText = axe.commons.dom.idrefs(group, 'aria-labelledby').some(function(element) {
return element && axe.commons.text.accessibleText(element);
});
var ariaLabel = group.getAttribute('aria-label');
if (!hasLabelledByText && !(ariaLabel && axe.commons.text.sanitize(ariaLabel))) {
self.relatedNodes(group);
failureCode = 'no-group-label';
return false;
}
var otherElements = getUnrelatedElements(group, name);
if (otherElements.length) {
self.relatedNodes(otherElements);
failureCode = 'group-mixed-inputs';
return false;
}
return true;
}
function spliceCurrentNode(nodes, current) {
return axe.commons.utils.toArray(nodes).filter(function(candidate) {
return candidate !== current;
});
}
function runCheck(virtualNode) {
var name = axe.commons.utils.escapeSelector(virtualNode.actualNode.name);
var root = axe.commons.dom.getRootNode(virtualNode.actualNode);
var matchingNodes = root.querySelectorAll('input[type="' + axe.commons.utils.escapeSelector(virtualNode.actualNode.type) + '"][name="' + name + '"]');
if (matchingNodes.length < 2) {
return true;
}
var fieldset = axe.commons.dom.findUpVirtual(virtualNode, 'fieldset');
var group = axe.commons.dom.findUpVirtual(virtualNode, '[role="group"]' + (virtualNode.actualNode.type === 'radio' ? ',[role="radiogroup"]' : ''));
if (!group && !fieldset) {
failureCode = 'no-group';
self.relatedNodes(spliceCurrentNode(matchingNodes, virtualNode.actualNode));
return false;
} else if (fieldset) {
return checkFieldset(fieldset, name);
} else {
return checkARIAGroup(group, name);
}
}
var data = {
name: node.getAttribute('name'),
type: node.getAttribute('type')
};
var result = runCheck(virtualNode);
if (!result) {
data.failureCode = failureCode;
}
this.data(data);
return result;
},
after: function after(results, options) {
var seen = {};
return results.filter(function(result) {
if (result.result) {
return true;
}
var data = result.data;
if (data) {
seen[data.type] = seen[data.type] || {};
if (!seen[data.type][data.name]) {
seen[data.type][data.name] = [ data ];
return true;
}
var hasBeenSeen = seen[data.type][data.name].some(function(candidate) {
return candidate.failureCode === data.failureCode;
});
if (!hasBeenSeen) {
seen[data.type][data.name].push(data);
}
return !hasBeenSeen;
}
return false;
});
}
}, {
id: 'group-labelledby',
evaluate: function evaluate(node, options, virtualNode) {
this.data({
name: node.getAttribute('name'),
type: node.getAttribute('type')
});
var doc = axe.commons.dom.getRootNode(node);
var matchingNodes = doc.querySelectorAll('input[type="' + axe.commons.utils.escapeSelector(node.type) + '"][name="' + axe.commons.utils.escapeSelector(node.name) + '"]');
if (matchingNodes.length <= 1) {
return true;
}
return [].map.call(matchingNodes, function(m) {
var l = m.getAttribute('aria-labelledby');
return l ? l.split(/\s+/) : [];
}).reduce(function(prev, curr) {
return prev.filter(function(n) {
return curr.includes(n);
});
}).filter(function(n) {
var labelNode = doc.getElementById(n);
return labelNode && axe.commons.text.accessibleText(labelNode, true);
}).length !== 0;
},
after: function after(results, options) {
var seen = {};
return results.filter(function(result) {
var data = result.data;
if (data) {
seen[data.type] = seen[data.type] || {};
if (!seen[data.type][data.name]) {
seen[data.type][data.name] = true;
return true;
}
}
return false;
});
}
}, {
id: 'accesskeys',
evaluate: function evaluate(node, options, virtualNode) {
if (axe.commons.dom.isVisible(node, false)) {
this.data(node.getAttribute('accesskey'));
this.relatedNodes([ node ]);
}
return true;
},
after: function after(results, options) {
var seen = {};
return results.filter(function(r) {
if (!r.data) {
return false;
}
var key = r.data.toUpperCase();
if (!seen[key]) {
seen[key] = r;
r.relatedNodes = [];
return true;
}
seen[key].relatedNodes.push(r.relatedNodes[0]);
return false;
}).map(function(r) {
r.result = !!r.relatedNodes.length;
return r;
});
}
}, {
id: 'focusable-no-name',
evaluate: function evaluate(node, options, virtualNode) {
var tabIndex = node.getAttribute('tabindex'), inFocusOrder = axe.commons.dom.isFocusable(node) && tabIndex > -1;
if (!inFocusOrder) {
return false;
}
return !axe.commons.text.accessibleText(node);
}
}, {
id: 'has-at-least-one-main',
evaluate: function evaluate(node, options, virtualNode) {
var mains = axe.utils.querySelectorAll(virtualNode, 'main,[role=main]');
this.data(!!mains[0]);
return !!mains[0];
},
after: function after(results, options) {
var hasMain = false;
for (var i = 0; i < results.length && !hasMain; i++) {
hasMain = results[i].data;
}
for (var i = 0; i < results.length; i++) {
results[i].result = hasMain;
}
return results;
}
}, {
id: 'has-no-more-than-one-main',
evaluate: function evaluate(node, options, virtualNode) {
var mains = axe.utils.querySelectorAll(virtualNode, 'main,[role=main]');
return mains.length <= 1;
}
}, {
id: 'main-is-top-level',
evaluate: function evaluate(node, options, virtualNode) {
var landmarks = axe.commons.aria.getRolesByType('landmark');
var parent = axe.commons.dom.getComposedParent(node);
while (parent) {
var role = parent.getAttribute('role');
if (!role && parent.tagName.toLowerCase() !== 'form') {
role = axe.commons.aria.implicitRole(parent);
}
if (role && landmarks.includes(role)) {
return false;
}
parent = axe.commons.dom.getComposedParent(parent);
}
return true;
}
}, {
id: 'tabindex',
evaluate: function evaluate(node, options, virtualNode) {
return node.tabIndex <= 0;
}
}, {
id: 'duplicate-img-label',
evaluate: function evaluate(node, options, virtualNode) {
var text = axe.commons.text.visibleVirtual(virtualNode, true).toLowerCase();
if (text === '') {
return false;
}
var images = axe.utils.querySelectorAll(virtualNode, 'img').filter(function(_ref) {
var actualNode = _ref.actualNode;
return axe.commons.dom.isVisible(actualNode) && ![ 'none', 'presentation' ].includes(actualNode.getAttribute('role'));
});
return images.some(function(img) {
return text === axe.commons.text.accessibleTextVirtual(img).toLowerCase();
});
}
}, {
id: 'explicit-label',
evaluate: function evaluate(node, options, virtualNode) {
if (node.getAttribute('id')) {
var root = axe.commons.dom.getRootNode(node);
var id = axe.commons.utils.escapeSelector(node.getAttribute('id'));
var label = root.querySelector('label[for="' + id + '"]');
if (label) {
return !!axe.commons.text.accessibleText(label);
}
}
return false;
}
}, {
id: 'help-same-as-label',
evaluate: function evaluate(node, options, virtualNode) {
var labelText = axe.commons.text.labelVirtual(virtualNode), check = node.getAttribute('title');
if (!labelText) {
return false;
}
if (!check) {
check = '';
if (node.getAttribute('aria-describedby')) {
var ref = axe.commons.dom.idrefs(node, 'aria-describedby');
check = ref.map(function(thing) {
return thing ? axe.commons.text.accessibleText(thing) : '';
}).join('');
}
}
return axe.commons.text.sanitize(check) === axe.commons.text.sanitize(labelText);
},
enabled: false
}, {
id: 'implicit-label',
evaluate: function evaluate(node, options, virtualNode) {
var label = axe.commons.dom.findUpVirtual(virtualNode, 'label');
if (label) {
return !!axe.commons.text.accessibleText(label);
}
return false;
}
}, {
id: 'multiple-label',
evaluate: function evaluate(node, options, virtualNode) {
var id = axe.commons.utils.escapeSelector(node.getAttribute('id'));
var labels = Array.from(document.querySelectorAll('label[for="' + id + '"]'));
var parent = node.parentNode;
if (labels.length) {
labels = labels.filter(function(label, index) {
if (index === 0 && !axe.commons.dom.isVisible(label, true) || axe.commons.dom.isVisible(label, true)) {
return label;
}
});
}
while (parent) {
if (parent.tagName === 'LABEL' && labels.indexOf(parent) === -1) {
labels.push(parent);
}
parent = parent.parentNode;
}
this.relatedNodes(labels);
return labels.length > 1;
}
}, {
id: 'title-only',
evaluate: function evaluate(node, options, virtualNode) {
var labelText = axe.commons.text.labelVirtual(virtualNode);
return !labelText && !!(node.getAttribute('title') || node.getAttribute('aria-describedby'));
}
}, {
id: 'has-lang',
evaluate: function evaluate(node, options, virtualNode) {
return !!(node.getAttribute('lang') || node.getAttribute('xml:lang') || '').trim();
}
}, {
id: 'valid-lang',
evaluate: function evaluate(node, options, virtualNode) {
function getBaseLang(lang) {
return lang.trim().split('-')[0].toLowerCase();
}
var langs, invalid;
langs = (options ? options : axe.commons.utils.validLangs()).map(getBaseLang);
invalid = [ 'lang', 'xml:lang' ].reduce(function(invalid, langAttr) {
var langVal = node.getAttribute(langAttr);
if (typeof langVal !== 'string') {
return invalid;
}
var baselangVal = getBaseLang(langVal);
if (baselangVal !== '' && langs.indexOf(baselangVal) === -1) {
invalid.push(langAttr + '="' + node.getAttribute(langAttr) + '"');
}
return invalid;
}, []);
if (invalid.length) {
this.data(invalid);
return true;
}
return false;
}
}, {
id: 'dlitem',
evaluate: function evaluate(node, options, virtualNode) {
var parent = axe.commons.dom.getComposedParent(node);
return parent.nodeName.toUpperCase() === 'DL';
}
}, {
id: 'has-listitem',
evaluate: function evaluate(node, options, virtualNode) {
return virtualNode.children.every(function(_ref2) {
var actualNode = _ref2.actualNode;
return actualNode.nodeName.toUpperCase() !== 'LI';
});
}
}, {
id: 'listitem',
evaluate: function evaluate(node, options, virtualNode) {
var parent = axe.commons.dom.getComposedParent(node);
return [ 'UL', 'OL' ].includes(parent.nodeName.toUpperCase()) || (parent.getAttribute('role') || '').toLowerCase() === 'list';
}
}, {
id: 'only-dlitems',
evaluate: function evaluate(node, options, virtualNode) {
var bad = [], permitted = [ 'STYLE', 'META', 'LINK', 'MAP', 'AREA', 'SCRIPT', 'DATALIST', 'TEMPLATE' ], hasNonEmptyTextNode = false;
virtualNode.children.forEach(function(_ref3) {
var actualNode = _ref3.actualNode;
var nodeName = actualNode.nodeName.toUpperCase();
if (actualNode.nodeType === 1 && nodeName !== 'DT' && nodeName !== 'DD' && permitted.indexOf(nodeName) === -1) {
bad.push(actualNode);
} else if (actualNode.nodeType === 3 && actualNode.nodeValue.trim() !== '') {
hasNonEmptyTextNode = true;
}
});
if (bad.length) {
this.relatedNodes(bad);
}
var retVal = !!bad.length || hasNonEmptyTextNode;
return retVal;
}
}, {
id: 'only-listitems',
evaluate: function evaluate(node, options, virtualNode) {
var bad = [], permitted = [ 'STYLE', 'META', 'LINK', 'MAP', 'AREA', 'SCRIPT', 'DATALIST', 'TEMPLATE' ], hasNonEmptyTextNode = false;
virtualNode.children.forEach(function(_ref4) {
var actualNode = _ref4.actualNode;
var nodeName = actualNode.nodeName.toUpperCase();
if (actualNode.nodeType === 1 && nodeName !== 'LI' && permitted.indexOf(nodeName) === -1) {
bad.push(actualNode);
} else if (actualNode.nodeType === 3 && actualNode.nodeValue.trim() !== '') {
hasNonEmptyTextNode = true;
}
});
if (bad.length) {
this.relatedNodes(bad);
}
return !!bad.length || hasNonEmptyTextNode;
}
}, {
id: 'structured-dlitems',
evaluate: function evaluate(node, options, virtualNode) {
var children = virtualNode.children;
if (!children || !children.length) {
return false;
}
var hasDt = false, hasDd = false, nodeName;
for (var i = 0; i < children.length; i++) {
nodeName = children[i].actualNode.nodeName.toUpperCase();
if (nodeName === 'DT') {
hasDt = true;
}
if (hasDt && nodeName === 'DD') {
return false;
}
if (nodeName === 'DD') {
hasDd = true;
}
}
return hasDt || hasDd;
}
}, {
id: 'caption',
evaluate: function evaluate(node, options, virtualNode) {
var tracks = axe.utils.querySelectorAll(virtualNode, 'track');
if (tracks.length) {
return !tracks.some(function(_ref5) {
var actualNode = _ref5.actualNode;
return (actualNode.getAttribute('kind') || '').toLowerCase() === 'captions';
});
}
return undefined;
}
}, {
id: 'description',
evaluate: function evaluate(node, options, virtualNode) {
var tracks = axe.utils.querySelectorAll(virtualNode, 'track');
if (tracks.length) {
var out = !tracks.some(function(_ref6) {
var actualNode = _ref6.actualNode;
return (actualNode.getAttribute('kind') || '').toLowerCase() === 'descriptions';
});
return out;
}
return undefined;
}
}, {
id: 'meta-viewport-large',
evaluate: function evaluate(node, options, virtualNode) {
options = options || {};
var params, content = node.getAttribute('content') || '', parsedParams = content.split(/[;,]/), result = {}, minimum = options.scaleMinimum || 2, lowerBound = options.lowerBound || false;
for (var i = 0, l = parsedParams.length; i < l; i++) {
params = parsedParams[i].split('=');
var key = params.shift().toLowerCase();
if (key && params.length) {
result[key.trim()] = params.shift().trim().toLowerCase();
}
}
if (lowerBound && result['maximum-scale'] && parseFloat(result['maximum-scale']) < lowerBound) {
return true;
}
if (!lowerBound && result['user-scalable'] === 'no') {
return false;
}
if (result['maximum-scale'] && parseFloat(result['maximum-scale']) < minimum) {
return false;
}
return true;
},
options: {
scaleMinimum: 5,
lowerBound: 2
}
}, {
id: 'meta-viewport',
evaluate: function evaluate(node, options, virtualNode) {
options = options || {};
var params, content = node.getAttribute('content') || '', parsedParams = content.split(/[;,]/), result = {}, minimum = options.scaleMinimum || 2, lowerBound = options.lowerBound || false;
for (var i = 0, l = parsedParams.length; i < l; i++) {
params = parsedParams[i].split('=');
var key = params.shift().toLowerCase();
if (key && params.length) {
result[key.trim()] = params.shift().trim().toLowerCase();
}
}
if (lowerBound && result['maximum-scale'] && parseFloat(result['maximum-scale']) < lowerBound) {
return true;
}
if (!lowerBound && result['user-scalable'] === 'no') {
return false;
}
if (result['maximum-scale'] && parseFloat(result['maximum-scale']) < minimum) {
return false;
}
return true;
},
options: {
scaleMinimum: 2
}
}, {
id: 'header-present',
evaluate: function evaluate(node, options, virtualNode) {
return !!node.querySelector('h1, h2, h3, h4, h5, h6, [role="heading"]');
}
}, {
id: 'heading-order',
evaluate: function evaluate(node, options, virtualNode) {
var ariaHeadingLevel = node.getAttribute('aria-level');
if (ariaHeadingLevel !== null) {
this.data(parseInt(ariaHeadingLevel, 10));
return true;
}
var headingLevel = node.tagName.match(/H(\d)/);
if (headingLevel) {
this.data(parseInt(headingLevel[1], 10));
return true;
}
return true;
},
after: function after(results, options) {
if (results.length < 2) {
return results;
}
var prevLevel = results[0].data;
for (var i = 1; i < results.length; i++) {
if (results[i].result && results[i].data > prevLevel + 1) {
results[i].result = false;
}
prevLevel = results[i].data;
}
return results;
}
}, {
id: 'internal-link-present',
evaluate: function evaluate(node, options, virtualNode) {
return !!node.querySelector('a[href^="#"]');
}
}, {
id: 'landmark',
evaluate: function evaluate(node, options, virtualNode) {
return axe.utils.querySelectorAll(virtualNode, 'main, [role="main"]').length > 0;
}
}, {
id: 'meta-refresh',
evaluate: function evaluate(node, options, virtualNode) {
var content = node.getAttribute('content') || '', parsedParams = content.split(/[;,]/);
return content === '' || parsedParams[0] === '0';
}
}, {
id: 'p-as-heading',
evaluate: function evaluate(node, options, virtualNode) {
var siblings = Array.from(node.parentNode.children);
var currentIndex = siblings.indexOf(node);
options = options || {};
var margins = options.margins || [];
var nextSibling = siblings.slice(currentIndex + 1).find(function(elm) {
return elm.nodeName.toUpperCase() === 'P';
});
var prevSibling = siblings.slice(0, currentIndex).reverse().find(function(elm) {
return elm.nodeName.toUpperCase() === 'P';
});
function getTextContainer(elm) {
var nextNode = elm;
var outerText = elm.textContent.trim();
var innerText = outerText;
while (innerText === outerText && nextNode !== undefined) {
var i = -1;
elm = nextNode;
if (elm.children.length === 0) {
return elm;
}
do {
i++;
innerText = elm.children[i].textContent.trim();
} while (innerText === '' && i + 1 < elm.children.length);
nextNode = elm.children[i];
}
return elm;
}
function normalizeFontWeight(weight) {
switch (weight) {
case 'lighter':
return 100;
case 'normal':
return 400;
case 'bold':
return 700;
case 'bolder':
return 900;
}
weight = parseInt(weight);
return !isNaN(weight) ? weight : 400;
}
function getStyleValues(node) {
var style = window.getComputedStyle(getTextContainer(node));
return {
fontWeight: normalizeFontWeight(style.getPropertyValue('font-weight')),
fontSize: parseInt(style.getPropertyValue('font-size')),
isItalic: style.getPropertyValue('font-style') === 'italic'
};
}
function isHeaderStyle(styleA, styleB, margins) {
return margins.reduce(function(out, margin) {
return out || (!margin.size || styleA.fontSize / margin.size > styleB.fontSize) && (!margin.weight || styleA.fontWeight - margin.weight > styleB.fontWeight) && (!margin.italic || styleA.isItalic && !styleB.isItalic);
}, false);
}
var currStyle = getStyleValues(node);
var nextStyle = nextSibling ? getStyleValues(nextSibling) : null;
var prevStyle = prevSibling ? getStyleValues(prevSibling) : null;
if (!nextStyle || !isHeaderStyle(currStyle, nextStyle, margins)) {
return true;
}
var blockquote = axe.commons.dom.findUpVirtual(virtualNode, 'blockquote');
if (blockquote && blockquote.nodeName.toUpperCase() === 'BLOCKQUOTE') {
return undefined;
}
if (prevStyle && !isHeaderStyle(currStyle, prevStyle, margins)) {
return undefined;
}
return false;
},
options: {
margins: [ {
weight: 150,
italic: true
}, {
weight: 150,
size: 1.15
}, {
italic: true,
size: 1.15
}, {
size: 1.4
} ]
}
}, {
id: 'region',
evaluate: function evaluate(node, options, virtualNode) {
var _axe$commons2 = axe.commons, dom = _axe$commons2.dom, aria = _axe$commons2.aria;
function getSkiplink(virtualNode) {
var firstLink = axe.utils.querySelectorAll(virtualNode, 'a[href]')[0];
if (firstLink && axe.commons.dom.getElementByReference(firstLink.actualNode, 'href')) {
return firstLink.actualNode;
}
}
var skipLink = getSkiplink(virtualNode);
var landmarkRoles = aria.getRolesByType('landmark');
var implicitLandmarks = landmarkRoles.reduce(function(arr, role) {
return arr.concat(aria.implicitNodes(role));
}, []).filter(function(r) {
return r !== null;
});
function isSkipLink(node) {
return skipLink && skipLink === node;
}
function isLandmark(node) {
if (node.hasAttribute('role')) {
return landmarkRoles.includes(node.getAttribute('role').toLowerCase());
} else {
return implicitLandmarks.some(function(implicitSelector) {
return axe.utils.matchesSelector(node, implicitSelector);
});
}
}
function findRegionlessElms(virtualNode) {
var node = virtualNode.actualNode;
if (isLandmark(node) || isSkipLink(node) || !dom.isVisible(node, true)) {
return [];
} else if (dom.hasContent(node, true)) {
return [ node ];
} else {
return virtualNode.children.filter(function(_ref7) {
var actualNode = _ref7.actualNode;
return actualNode.nodeType === 1;
}).map(findRegionlessElms).reduce(function(a, b) {
return a.concat(b);
}, []);
}
}
var regionlessNodes = findRegionlessElms(virtualNode);
this.relatedNodes(regionlessNodes);
return regionlessNodes.length === 0;
},
after: function after(results, options) {
return [ results[0] ];
}
}, {
id: 'skip-link',
evaluate: function evaluate(node, options, virtualNode) {
var target = axe.commons.dom.getElementByReference(node, 'href');
if (target) {
return axe.commons.dom.isVisible(target, true) || undefined;
}
return false;
}
}, {
id: 'unique-frame-title',
evaluate: function evaluate(node, options, virtualNode) {
var title = axe.commons.text.sanitize(node.title).trim().toLowerCase();
this.data(title);
return true;
},
after: function after(results, options) {
var titles = {};
results.forEach(function(r) {
titles[r.data] = titles[r.data] !== undefined ? ++titles[r.data] : 0;
});
results.forEach(function(r) {
r.result = !!titles[r.data];
});
return results;
}
}, {
id: 'aria-label',
evaluate: function evaluate(node, options, virtualNode) {
var label = node.getAttribute('aria-label');
return !!(label ? axe.commons.text.sanitize(label).trim() : '');
}
}, {
id: 'aria-labelledby',
evaluate: function evaluate(node, options, virtualNode) {
var getIdRefs = axe.commons.dom.idrefs;
return getIdRefs(node, 'aria-labelledby').some(function(elm) {
return elm && axe.commons.text.accessibleText(elm, true);
});
}
}, {
id: 'button-has-visible-text',
evaluate: function evaluate(node, options, virtualNode) {
var nodeName = node.nodeName.toUpperCase();
var role = node.getAttribute('role');
var label = void 0;
if (nodeName === 'BUTTON' || role === 'button' && nodeName !== 'INPUT') {
label = axe.commons.text.accessibleText(node);
this.data(label);
return !!label;
} else {
return false;
}
}
}, {
id: 'doc-has-title',
evaluate: function evaluate(node, options, virtualNode) {
var title = document.title;
return !!(title ? axe.commons.text.sanitize(title).trim() : '');
}
}, {
id: 'duplicate-id',
evaluate: function evaluate(node, options, virtualNode) {
var id = node.getAttribute('id').trim();
if (!id) {
return true;
}
var root = axe.commons.dom.getRootNode(node);
var matchingNodes = Array.from(root.querySelectorAll('[id="' + axe.commons.utils.escapeSelector(id) + '"]')).filter(function(foundNode) {
return foundNode !== node;
});
if (matchingNodes.length) {
this.relatedNodes(matchingNodes);
}
this.data(id);
return matchingNodes.length === 0;
},
after: function after(results, options) {
var uniqueIds = [];
return results.filter(function(r) {
if (uniqueIds.indexOf(r.data) === -1) {
uniqueIds.push(r.data);
return true;
}
return false;
});
}
}, {
id: 'exists',
evaluate: function evaluate(node, options, virtualNode) {
return true;
}
}, {
id: 'has-alt',
evaluate: function evaluate(node, options, virtualNode) {
var nn = node.nodeName.toLowerCase();
return node.hasAttribute('alt') && (nn === 'img' || nn === 'input' || nn === 'area');
}
}, {
id: 'has-visible-text',
evaluate: function evaluate(node, options, virtualNode) {
return axe.commons.text.accessibleText(node).length > 0;
}
}, {
id: 'is-on-screen',
evaluate: function evaluate(node, options, virtualNode) {
return axe.commons.dom.isVisible(node, false) && !axe.commons.dom.isOffscreen(node);
}
}, {
id: 'non-empty-alt',
evaluate: function evaluate(node, options, virtualNode) {
var label = node.getAttribute('alt');
return !!(label ? axe.commons.text.sanitize(label).trim() : '');
}
}, {
id: 'non-empty-if-present',
evaluate: function evaluate(node, options, virtualNode) {
var nodeName = node.nodeName.toUpperCase();
var type = (node.getAttribute('type') || '').toLowerCase();
var label = node.getAttribute('value');
this.data(label);
if (nodeName === 'INPUT' && [ 'submit', 'reset' ].includes(type)) {
return label === null;
}
return false;
}
}, {
id: 'non-empty-title',
evaluate: function evaluate(node, options, virtualNode) {
var title = node.getAttribute('title');
return !!(title ? axe.commons.text.sanitize(title).trim() : '');
}
}, {
id: 'non-empty-value',
evaluate: function evaluate(node, options, virtualNode) {
var label = node.getAttribute('value');
return !!(label ? axe.commons.text.sanitize(label).trim() : '');
}
}, {
id: 'role-none',
evaluate: function evaluate(node, options, virtualNode) {
return node.getAttribute('role') === 'none';
}
}, {
id: 'role-presentation',
evaluate: function evaluate(node, options, virtualNode) {
return node.getAttribute('role') === 'presentation';
}
}, {
id: 'caption-faked',
evaluate: function evaluate(node, options, virtualNode) {
var table = axe.commons.table.toGrid(node);
var firstRow = table[0];
if (table.length <= 1 || firstRow.length <= 1 || node.rows.length <= 1) {
return true;
}
return firstRow.reduce(function(out, curr, i) {
return out || curr !== firstRow[i + 1] && firstRow[i + 1] !== undefined;
}, false);
}
}, {
id: 'has-caption',
evaluate: function evaluate(node, options, virtualNode) {
return !!node.caption;
}
}, {
id: 'has-summary',
evaluate: function evaluate(node, options, virtualNode) {
return !!node.summary;
}
}, {
id: 'has-th',
evaluate: function evaluate(node, options, virtualNode) {
var row, cell, badCells = [];
for (var rowIndex = 0, rowLength = node.rows.length; rowIndex < rowLength; rowIndex++) {
row = node.rows[rowIndex];
for (var cellIndex = 0, cellLength = row.cells.length; cellIndex < cellLength; cellIndex++) {
cell = row.cells[cellIndex];
if (cell.nodeName.toUpperCase() === 'TH' || [ 'rowheader', 'columnheader' ].indexOf(cell.getAttribute('role')) !== -1) {
badCells.push(cell);
}
}
}
if (badCells.length) {
this.relatedNodes(badCells);
return true;
}
return false;
}
}, {
id: 'html5-scope',
evaluate: function evaluate(node, options, virtualNode) {
if (!axe.commons.dom.isHTML5(document)) {
return true;
}
return node.nodeName.toUpperCase() === 'TH';
}
}, {
id: 'same-caption-summary',
evaluate: function evaluate(node, options, virtualNode) {
return !!(node.summary && node.caption) && node.summary === axe.commons.text.accessibleText(node.caption);
}
}, {
id: 'scope-value',
evaluate: function evaluate(node, options, virtualNode) {
options = options || {};
var value = node.getAttribute('scope').toLowerCase();
var validVals = [ 'row', 'col', 'rowgroup', 'colgroup' ] || options.values;
return validVals.indexOf(value) !== -1;
}
}, {
id: 'td-has-header',
evaluate: function evaluate(node, options, virtualNode) {
var tableUtils = axe.commons.table;
var badCells = [];
var cells = tableUtils.getAllCells(node);
cells.forEach(function(cell) {
if (axe.commons.dom.hasContent(cell) && tableUtils.isDataCell(cell) && !axe.commons.aria.label(cell)) {
var hasHeaders = tableUtils.getHeaders(cell);
hasHeaders = hasHeaders.reduce(function(hasHeaders, header) {
return hasHeaders || header !== null && !!axe.commons.dom.hasContent(header);
}, false);
if (!hasHeaders) {
badCells.push(cell);
}
}
});
if (badCells.length) {
this.relatedNodes(badCells);
return false;
}
return true;
}
}, {
id: 'td-headers-attr',
evaluate: function evaluate(node, options, virtualNode) {
var cells = [];
for (var rowIndex = 0, rowLength = node.rows.length; rowIndex < rowLength; rowIndex++) {
var row = node.rows[rowIndex];
for (var cellIndex = 0, cellLength = row.cells.length; cellIndex < cellLength; cellIndex++) {
cells.push(row.cells[cellIndex]);
}
}
var ids = cells.reduce(function(ids, cell) {
if (cell.getAttribute('id')) {
ids.push(cell.getAttribute('id'));
}
return ids;
}, []);
var badCells = cells.reduce(function(badCells, cell) {
var isSelf, notOfTable;
var headers = (cell.getAttribute('headers') || '').split(/\s/).reduce(function(headers, header) {
header = header.trim();
if (header) {
headers.push(header);
}
return headers;
}, []);
if (headers.length !== 0) {
if (cell.getAttribute('id')) {
isSelf = headers.indexOf(cell.getAttribute('id').trim()) !== -1;
}
notOfTable = headers.reduce(function(fail, header) {
return fail || ids.indexOf(header) === -1;
}, false);
if (isSelf || notOfTable) {
badCells.push(cell);
}
}
return badCells;
}, []);
if (badCells.length > 0) {
this.relatedNodes(badCells);
return false;
} else {
return true;
}
}
}, {
id: 'th-has-data-cells',
evaluate: function evaluate(node, options, virtualNode) {
var tableUtils = axe.commons.table;
var cells = tableUtils.getAllCells(node);
var checkResult = this;
var reffedHeaders = [];
cells.forEach(function(cell) {
var headers = cell.getAttribute('headers');
if (headers) {
reffedHeaders = reffedHeaders.concat(headers.split(/\s+/));
}
var ariaLabel = cell.getAttribute('aria-labelledby');
if (ariaLabel) {
reffedHeaders = reffedHeaders.concat(ariaLabel.split(/\s+/));
}
});
var headers = cells.filter(function(cell) {
if (axe.commons.text.sanitize(cell.textContent) === '') {
return false;
}
return cell.nodeName.toUpperCase() === 'TH' || [ 'rowheader', 'columnheader' ].indexOf(cell.getAttribute('role')) !== -1;
});
var tableGrid = tableUtils.toGrid(node);
var out = headers.reduce(function(res, header) {
if (header.getAttribute('id') && reffedHeaders.includes(header.getAttribute('id'))) {
return !res ? res : true;
}
var hasCell = false;
var pos = tableUtils.getCellPosition(header, tableGrid);
if (tableUtils.isColumnHeader(header)) {
hasCell = tableUtils.traverse('down', pos, tableGrid).reduce(function(out, cell) {
return out || axe.commons.dom.hasContent(cell) && !tableUtils.isColumnHeader(cell);
}, false);
}
if (!hasCell && tableUtils.isRowHeader(header)) {
hasCell = tableUtils.traverse('right', pos, tableGrid).reduce(function(out, cell) {
return out || axe.commons.dom.hasContent(cell) && !tableUtils.isRowHeader(cell);
}, false);
}
if (!hasCell) {
checkResult.relatedNodes(header);
}
return res && hasCell;
}, true);
return out ? true : undefined;
}
}, {
id: 'hidden-content',
evaluate: function evaluate(node, options, virtualNode) {
var whitelist = [ 'SCRIPT', 'HEAD', 'TITLE', 'NOSCRIPT', 'STYLE', 'TEMPLATE' ];
if (!whitelist.includes(node.tagName.toUpperCase()) && axe.commons.dom.hasContentVirtual(virtualNode)) {
var styles = window.getComputedStyle(node);
if (styles.getPropertyValue('display') === 'none') {
return undefined;
} else if (styles.getPropertyValue('visibility') === 'hidden') {
var parent = axe.commons.dom.getComposedParent(node);
var parentStyle = parent && window.getComputedStyle(parent);
if (!parentStyle || parentStyle.getPropertyValue('visibility') !== 'hidden') {
return undefined;
}
}
}
return true;
}
} ],
commons: function() {
var commons = {};
var aria = commons.aria = {}, lookupTable = aria.lookupTable = {};
lookupTable.attributes = {
'aria-activedescendant': {
type: 'idref'
},
'aria-atomic': {
type: 'boolean',
values: [ 'true', 'false' ]
},
'aria-autocomplete': {
type: 'nmtoken',
values: [ 'inline', 'list', 'both', 'none' ]
},
'aria-busy': {
type: 'boolean',
values: [ 'true', 'false' ]
},
'aria-checked': {
type: 'nmtoken',
values: [ 'true', 'false', 'mixed', 'undefined' ]
},
'aria-colcount': {
type: 'int'
},
'aria-colindex': {
type: 'int'
},
'aria-colspan': {
type: 'int'
},
'aria-controls': {
type: 'idrefs'
},
'aria-current': {
type: 'nmtoken',
values: [ 'page', 'step', 'location', 'date', 'time', 'true', 'false' ]
},
'aria-describedby': {
type: 'idrefs'
},
'aria-disabled': {
type: 'boolean',
values: [ 'true', 'false' ]
},
'aria-dropeffect': {
type: 'nmtokens',
values: [ 'copy', 'move', 'reference', 'execute', 'popup', 'none' ]
},
'aria-errormessage': {
type: 'idref'
},
'aria-expanded': {
type: 'nmtoken',
values: [ 'true', 'false', 'undefined' ]
},
'aria-flowto': {
type: 'idrefs'
},
'aria-grabbed': {
type: 'nmtoken',
values: [ 'true', 'false', 'undefined' ]
},
'aria-haspopup': {
type: 'nmtoken',
values: [ 'true', 'false', 'menu', 'listbox', 'tree', 'grid', 'dialog' ]
},
'aria-hidden': {
type: 'boolean',
values: [ 'true', 'false' ]
},
'aria-invalid': {
type: 'nmtoken',
values: [ 'true', 'false', 'spelling', 'grammar' ]
},
'aria-keyshortcuts': {
type: 'string'
},
'aria-label': {
type: 'string'
},
'aria-labelledby': {
type: 'idrefs'
},
'aria-level': {
type: 'int'
},
'aria-live': {
type: 'nmtoken',
values: [ 'off', 'polite', 'assertive' ]
},
'aria-modal': {
type: 'boolean',
values: [ 'true', 'false' ]
},
'aria-multiline': {
type: 'boolean',
values: [ 'true', 'false' ]
},
'aria-multiselectable': {
type: 'boolean',
values: [ 'true', 'false' ]
},
'aria-orientation': {
type: 'nmtoken',
values: [ 'horizontal', 'vertical' ]
},
'aria-owns': {
type: 'idrefs'
},
'aria-placeholder': {
type: 'string'
},
'aria-posinset': {
type: 'int'
},
'aria-pressed': {
type: 'nmtoken',
values: [ 'true', 'false', 'mixed', 'undefined' ]
},
'aria-readonly': {
type: 'boolean',
values: [ 'true', 'false' ]
},
'aria-relevant': {
type: 'nmtokens',
values: [ 'additions', 'removals', 'text', 'all' ]
},
'aria-required': {
type: 'boolean',
values: [ 'true', 'false' ]
},
'aria-rowcount': {
type: 'int'
},
'aria-rowindex': {
type: 'int'
},
'aria-rowspan': {
type: 'int'
},
'aria-selected': {
type: 'nmtoken',
values: [ 'true', 'false', 'undefined' ]
},
'aria-setsize': {
type: 'int'
},
'aria-sort': {
type: 'nmtoken',
values: [ 'ascending', 'descending', 'other', 'none' ]
},
'aria-valuemax': {
type: 'decimal'
},
'aria-valuemin': {
type: 'decimal'
},
'aria-valuenow': {
type: 'decimal'
},
'aria-valuetext': {
type: 'string'
}
};
lookupTable.globalAttributes = [ 'aria-atomic', 'aria-busy', 'aria-controls', 'aria-current', 'aria-describedby', 'aria-disabled', 'aria-dropeffect', 'aria-flowto', 'aria-grabbed', 'aria-haspopup', 'aria-hidden', 'aria-invalid', 'aria-keyshortcuts', 'aria-label', 'aria-labelledby', 'aria-live', 'aria-owns', 'aria-relevant' ];
lookupTable.role = {
alert: {
type: 'widget',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null
},
alertdialog: {
type: 'widget',
attributes: {
allowed: [ 'aria-expanded', 'aria-modal' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null
},
application: {
type: 'landmark',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null
},
article: {
type: 'structure',
attributes: {
allowed: [ 'aria-expanded', 'aria-posinset', 'aria-setsize' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null,
implicit: [ 'article' ]
},
banner: {
type: 'landmark',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null,
implicit: [ 'header' ]
},
button: {
type: 'widget',
attributes: {
allowed: [ 'aria-expanded', 'aria-pressed' ]
},
owned: null,
nameFrom: [ 'author', 'contents' ],
context: null,
implicit: [ 'button', 'input[type="button"]', 'input[type="image"]', 'input[type="reset"]', 'input[type="submit"]', 'summary' ]
},
cell: {
type: 'structure',
attributes: {
allowed: [ 'aria-colindex', 'aria-colspan', 'aria-rowindex', 'aria-rowspan' ]
},
owned: null,
nameFrom: [ 'author', 'contents' ],
context: [ 'row' ],
implicit: [ 'td', 'th' ]
},
checkbox: {
type: 'widget',
attributes: {
allowed: [ 'aria-checked', 'aria-required' ]
},
owned: null,
nameFrom: [ 'author', 'contents' ],
context: null,
implicit: [ 'input[type="checkbox"]' ]
},
columnheader: {
type: 'structure',
attributes: {
allowed: [ 'aria-colindex', 'aria-colspan', 'aria-expanded', 'aria-rowindex', 'aria-rowspan', 'aria-required', 'aria-readonly', 'aria-selected', 'aria-sort' ]
},
owned: null,
nameFrom: [ 'author', 'contents' ],
context: [ 'row' ],
implicit: [ 'th' ]
},
combobox: {
type: 'composite',
attributes: {
allowed: [ 'aria-expanded', 'aria-autocomplete', 'aria-required', 'aria-activedescendant', 'aria-orientation' ]
},
owned: {
all: [ 'listbox', 'textbox' ]
},
nameFrom: [ 'author' ],
context: null
},
command: {
nameFrom: [ 'author' ],
type: 'abstract'
},
complementary: {
type: 'landmark',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null,
implicit: [ 'aside' ]
},
composite: {
nameFrom: [ 'author' ],
type: 'abstract'
},
contentinfo: {
type: 'landmark',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null,
implicit: [ 'footer' ]
},
definition: {
type: 'structure',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null,
implicit: [ 'dd', 'dfn' ]
},
dialog: {
type: 'widget',
attributes: {
allowed: [ 'aria-expanded', 'aria-modal' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null,
implicit: [ 'dialog' ]
},
directory: {
type: 'structure',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author', 'contents' ],
context: null
},
document: {
type: 'structure',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null,
implicit: [ 'body' ]
},
feed: {
type: 'structure',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: {
one: [ 'article' ]
},
nameFrom: [ 'author' ],
context: null
},
form: {
type: 'landmark',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null,
implicit: [ 'form' ]
},
grid: {
type: 'composite',
attributes: {
allowed: [ 'aria-activedescendant', 'aria-expanded', 'aria-colcount', 'aria-level', 'aria-multiselectable', 'aria-readonly', 'aria-rowcount' ]
},
owned: {
one: [ 'rowgroup', 'row' ]
},
nameFrom: [ 'author' ],
context: null,
implicit: [ 'table' ]
},
gridcell: {
type: 'widget',
attributes: {
allowed: [ 'aria-colindex', 'aria-colspan', 'aria-expanded', 'aria-rowindex', 'aria-rowspan', 'aria-selected', 'aria-readonly', 'aria-required' ]
},
owned: null,
nameFrom: [ 'author', 'contents' ],
context: [ 'row' ],
implicit: [ 'td', 'th' ]
},
group: {
type: 'structure',
attributes: {
allowed: [ 'aria-activedescendant', 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null,
implicit: [ 'details', 'optgroup' ]
},
heading: {
type: 'structure',
attributes: {
allowed: [ 'aria-level', 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author', 'contents' ],
context: null,
implicit: [ 'h1', 'h2', 'h3', 'h4', 'h5', 'h6' ]
},
img: {
type: 'structure',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null,
implicit: [ 'img' ]
},
input: {
nameFrom: [ 'author' ],
type: 'abstract'
},
landmark: {
nameFrom: [ 'author' ],
type: 'abstract'
},
link: {
type: 'widget',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author', 'contents' ],
context: null,
implicit: [ 'a[href]' ]
},
list: {
type: 'structure',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: {
all: [ 'listitem' ]
},
nameFrom: [ 'author' ],
context: null,
implicit: [ 'ol', 'ul', 'dl' ]
},
listbox: {
type: 'composite',
attributes: {
allowed: [ 'aria-activedescendant', 'aria-multiselectable', 'aria-required', 'aria-expanded', 'aria-orientation' ]
},
owned: {
all: [ 'option' ]
},
nameFrom: [ 'author' ],
context: null,
implicit: [ 'select' ]
},
listitem: {
type: 'structure',
attributes: {
allowed: [ 'aria-level', 'aria-posinset', 'aria-setsize', 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author', 'contents' ],
context: [ 'list' ],
implicit: [ 'li', 'dt' ]
},
log: {
type: 'widget',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null
},
main: {
type: 'landmark',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null,
implicit: [ 'main' ]
},
marquee: {
type: 'widget',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null
},
math: {
type: 'structure',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null,
implicit: [ 'math' ]
},
menu: {
type: 'composite',
attributes: {
allowed: [ 'aria-activedescendant', 'aria-expanded', 'aria-orientation' ]
},
owned: {
one: [ 'menuitem', 'menuitemradio', 'menuitemcheckbox' ]
},
nameFrom: [ 'author' ],
context: null,
implicit: [ 'menu[type="context"]' ]
},
menubar: {
type: 'composite',
attributes: {
allowed: [ 'aria-activedescendant', 'aria-expanded', 'aria-orientation' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null
},
menuitem: {
type: 'widget',
attributes: {
allowed: [ 'aria-posinset', 'aria-setsize', 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author', 'contents' ],
context: [ 'menu', 'menubar' ],
implicit: [ 'menuitem[type="command"]' ]
},
menuitemcheckbox: {
type: 'widget',
attributes: {
allowed: [ 'aria-checked', 'aria-posinset', 'aria-setsize' ]
},
owned: null,
nameFrom: [ 'author', 'contents' ],
context: [ 'menu', 'menubar' ],
implicit: [ 'menuitem[type="checkbox"]' ]
},
menuitemradio: {
type: 'widget',
attributes: {
allowed: [ 'aria-checked', 'aria-selected', 'aria-posinset', 'aria-setsize' ]
},
owned: null,
nameFrom: [ 'author', 'contents' ],
context: [ 'menu', 'menubar' ],
implicit: [ 'menuitem[type="radio"]' ]
},
navigation: {
type: 'landmark',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null,
implicit: [ 'nav' ]
},
none: {
type: 'structure',
attributes: null,
owned: null,
nameFrom: [ 'author' ],
context: null
},
note: {
type: 'structure',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null
},
option: {
type: 'widget',
attributes: {
allowed: [ 'aria-selected', 'aria-posinset', 'aria-setsize', 'aria-checked' ]
},
owned: null,
nameFrom: [ 'author', 'contents' ],
context: [ 'listbox' ],
implicit: [ 'option' ]
},
presentation: {
type: 'structure',
attributes: null,
owned: null,
nameFrom: [ 'author' ],
context: null
},
progressbar: {
type: 'widget',
attributes: {
allowed: [ 'aria-valuetext', 'aria-valuenow', 'aria-valuemax', 'aria-valuemin' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null,
implicit: [ 'progress' ]
},
radio: {
type: 'widget',
attributes: {
allowed: [ 'aria-checked', 'aria-selected', 'aria-posinset', 'aria-setsize', 'aria-required' ]
},
owned: null,
nameFrom: [ 'author', 'contents' ],
context: null,
implicit: [ 'input[type="radio"]' ]
},
radiogroup: {
type: 'composite',
attributes: {
allowed: [ 'aria-activedescendant', 'aria-required', 'aria-expanded' ]
},
owned: {
all: [ 'radio' ]
},
nameFrom: [ 'author' ],
context: null
},
range: {
nameFrom: [ 'author' ],
type: 'abstract'
},
region: {
type: 'landmark',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null,
implicit: [ 'section[aria-label]', 'section[aria-labelledby]', 'section[title]' ]
},
roletype: {
type: 'abstract'
},
row: {
type: 'structure',
attributes: {
allowed: [ 'aria-activedescendant', 'aria-colindex', 'aria-expanded', 'aria-level', 'aria-selected', 'aria-rowindex' ]
},
owned: {
one: [ 'cell', 'columnheader', 'rowheader', 'gridcell' ]
},
nameFrom: [ 'author', 'contents' ],
context: [ 'rowgroup', 'grid', 'treegrid', 'table' ],
implicit: [ 'tr' ]
},
rowgroup: {
type: 'structure',
attributes: {
allowed: [ 'aria-activedescendant', 'aria-expanded' ]
},
owned: {
all: [ 'row' ]
},
nameFrom: [ 'author', 'contents' ],
context: [ 'grid', 'table' ],
implicit: [ 'tbody', 'thead', 'tfoot' ]
},
rowheader: {
type: 'structure',
attributes: {
allowed: [ 'aria-colindex', 'aria-colspan', 'aria-expanded', 'aria-rowindex', 'aria-rowspan', 'aria-required', 'aria-readonly', 'aria-selected', 'aria-sort' ]
},
owned: null,
nameFrom: [ 'author', 'contents' ],
context: [ 'row' ],
implicit: [ 'th' ]
},
scrollbar: {
type: 'widget',
attributes: {
required: [ 'aria-controls', 'aria-valuenow', 'aria-valuemax', 'aria-valuemin' ],
allowed: [ 'aria-valuetext', 'aria-orientation' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null
},
search: {
type: 'landmark',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null
},
searchbox: {
type: 'widget',
attributes: {
allowed: [ 'aria-activedescendant', 'aria-autocomplete', 'aria-multiline', 'aria-readonly', 'aria-required', 'aria-placeholder' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null,
implicit: [ 'input[type="search"]' ]
},
section: {
nameFrom: [ 'author', 'contents' ],
type: 'abstract'
},
sectionhead: {
nameFrom: [ 'author', 'contents' ],
type: 'abstract'
},
select: {
nameFrom: [ 'author' ],
type: 'abstract'
},
separator: {
type: 'structure',
attributes: {
allowed: [ 'aria-expanded', 'aria-orientation' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null,
implicit: [ 'hr' ]
},
slider: {
type: 'widget',
attributes: {
allowed: [ 'aria-valuetext', 'aria-orientation' ],
required: [ 'aria-valuenow', 'aria-valuemax', 'aria-valuemin' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null,
implicit: [ 'input[type="range"]' ]
},
spinbutton: {
type: 'widget',
attributes: {
allowed: [ 'aria-valuetext', 'aria-required' ],
required: [ 'aria-valuenow', 'aria-valuemax', 'aria-valuemin' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null,
implicit: [ 'input[type="number"]' ]
},
status: {
type: 'widget',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null,
implicit: [ 'output' ]
},
structure: {
type: 'abstract'
},
switch: {
type: 'widget',
attributes: {
required: [ 'aria-checked' ]
},
owned: null,
nameFrom: [ 'author', 'contents' ],
context: null
},
tab: {
type: 'widget',
attributes: {
allowed: [ 'aria-selected', 'aria-expanded', 'aria-setsize', 'aria-posinset' ]
},
owned: null,
nameFrom: [ 'author', 'contents' ],
context: [ 'tablist' ]
},
table: {
type: 'structure',
attributes: {
allowed: [ 'aria-colcount', 'aria-rowcount' ]
},
owned: {
one: [ 'rowgroup', 'row' ]
},
nameFrom: [ 'author' ],
context: null,
implicit: [ 'table' ]
},
tablist: {
type: 'composite',
attributes: {
allowed: [ 'aria-activedescendant', 'aria-expanded', 'aria-level', 'aria-multiselectable', 'aria-orientation' ]
},
owned: {
all: [ 'tab' ]
},
nameFrom: [ 'author' ],
context: null
},
tabpanel: {
type: 'widget',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null
},
term: {
type: 'structure',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author', 'contents' ],
context: null,
implicit: [ 'dt' ]
},
text: {
type: 'structure',
owned: null,
nameFrom: [ 'author', 'contents' ],
context: null
},
textbox: {
type: 'widget',
attributes: {
allowed: [ 'aria-activedescendant', 'aria-autocomplete', 'aria-multiline', 'aria-readonly', 'aria-required', 'aria-placeholder' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null,
implicit: [ 'input[type="text"]', 'input[type="email"]', 'input[type="password"]', 'input[type="tel"]', 'input[type="url"]', 'input:not([type])', 'textarea' ]
},
timer: {
type: 'widget',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null
},
toolbar: {
type: 'structure',
attributes: {
allowed: [ 'aria-activedescendant', 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author' ],
context: null,
implicit: [ 'menu[type="toolbar"]' ]
},
tooltip: {
type: 'widget',
attributes: {
allowed: [ 'aria-expanded' ]
},
owned: null,
nameFrom: [ 'author', 'contents' ],
context: null
},
tree: {
type: 'composite',
attributes: {
allowed: [ 'aria-activedescendant', 'aria-multiselectable', 'aria-required', 'aria-expanded', 'aria-orientation' ]
},
owned: {
all: [ 'treeitem' ]
},
nameFrom: [ 'author' ],
context: null
},
treegrid: {
type: 'composite',
attributes: {
allowed: [ 'aria-activedescendant', 'aria-colcount', 'aria-expanded', 'aria-level', 'aria-multiselectable', 'aria-readonly', 'aria-required', 'aria-rowcount', 'aria-orientation' ]
},
owned: {
one: [ 'rowgroup', 'row' ]
},
nameFrom: [ 'author' ],
context: null
},
treeitem: {
type: 'widget',
attributes: {
allowed: [ 'aria-checked', 'aria-selected', 'aria-expanded', 'aria-level', 'aria-posinset', 'aria-setsize' ]
},
owned: null,
nameFrom: [ 'author', 'contents' ],
context: [ 'group', 'tree' ]
},
widget: {
type: 'abstract'
},
window: {
nameFrom: [ 'author' ],
type: 'abstract'
}
};
var color = {};
commons.color = color;
var dom = commons.dom = {};
var table = commons.table = {};
var text = commons.text = {
EdgeFormDefaults: {}
};
var utils = commons.utils = axe.utils;
aria.requiredAttr = function(role) {
'use strict';
var roles = aria.lookupTable.role[role], attr = roles && roles.attributes && roles.attributes.required;
return attr || [];
};
aria.allowedAttr = function(role) {
'use strict';
var roles = aria.lookupTable.role[role], attr = roles && roles.attributes && roles.attributes.allowed || [], requiredAttr = roles && roles.attributes && roles.attributes.required || [];
return attr.concat(aria.lookupTable.globalAttributes).concat(requiredAttr);
};
aria.validateAttr = function(att) {
'use strict';
return !!aria.lookupTable.attributes[att];
};
aria.validateAttrValue = function(node, attr) {
'use strict';
var matches, list, value = node.getAttribute(attr), attrInfo = aria.lookupTable.attributes[attr];
var doc = dom.getRootNode(node);
if (!attrInfo) {
return true;
}
switch (attrInfo.type) {
case 'boolean':
case 'nmtoken':
return typeof value === 'string' && attrInfo.values.indexOf(value.toLowerCase()) !== -1;
case 'nmtokens':
list = axe.utils.tokenList(value);
return list.reduce(function(result, token) {
return result && attrInfo.values.indexOf(token) !== -1;
}, list.length !== 0);
case 'idref':
return !!(value && doc.getElementById(value));
case 'idrefs':
list = axe.utils.tokenList(value);
return list.reduce(function(result, token) {
return !!(result && doc.getElementById(token));
}, list.length !== 0);
case 'string':
return true;
case 'decimal':
matches = value.match(/^[-+]?([0-9]*)\.?([0-9]*)$/);
return !!(matches && (matches[1] || matches[2]));
case 'int':
return /^[-+]?[0-9]+$/.test(value);
}
};
aria.labelVirtual = function(_ref8) {
var actualNode = _ref8.actualNode;
var ref = void 0, candidate = void 0;
if (actualNode.getAttribute('aria-labelledby')) {
ref = dom.idrefs(actualNode, 'aria-labelledby');
candidate = ref.map(function(thing) {
var vNode = axe.utils.getNodeFromTree(axe._tree[0], thing);
return vNode ? text.visibleVirtual(vNode, true) : '';
}).join(' ').trim();
if (candidate) {
return candidate;
}
}
candidate = actualNode.getAttribute('aria-label');
if (candidate) {
candidate = text.sanitize(candidate).trim();
if (candidate) {
return candidate;
}
}
return null;
};
aria.label = function(node) {
node = axe.utils.getNodeFromTree(axe._tree[0], node);
return aria.labelVirtual(node);
};
aria.isValidRole = function(role) {
'use strict';
if (aria.lookupTable.role[role]) {
return true;
}
return false;
};
aria.getRolesWithNameFromContents = function() {
return Object.keys(aria.lookupTable.role).filter(function(r) {
return aria.lookupTable.role[r].nameFrom && aria.lookupTable.role[r].nameFrom.indexOf('contents') !== -1;
});
};
aria.getRolesByType = function(roleType) {
return Object.keys(aria.lookupTable.role).filter(function(r) {
return aria.lookupTable.role[r].type === roleType;
});
};
aria.getRoleType = function(role) {
var r = aria.lookupTable.role[role];
return r && r.type || null;
};
aria.requiredOwned = function(role) {
'use strict';
var owned = null, roles = aria.lookupTable.role[role];
if (roles) {
owned = axe.utils.clone(roles.owned);
}
return owned;
};
aria.requiredContext = function(role) {
'use strict';
var context = null, roles = aria.lookupTable.role[role];
if (roles) {
context = axe.utils.clone(roles.context);
}
return context;
};
aria.implicitNodes = function(role) {
'use strict';
var implicit = null, roles = aria.lookupTable.role[role];
if (roles && roles.implicit) {
implicit = axe.utils.clone(roles.implicit);
}
return implicit;
};
aria.implicitRole = function(node) {
'use strict';
var isValidImplicitRole = function isValidImplicitRole(set, role) {
var validForNodeType = function validForNodeType(implicitNodeTypeSelector) {
return axe.utils.matchesSelector(node, implicitNodeTypeSelector);
};
if (role.implicit && role.implicit.some(validForNodeType)) {
set.push(role.name);
}
return set;
};
var sortRolesByOptimalAriaContext = function sortRolesByOptimalAriaContext(roles, ariaAttributes) {
var getScore = function getScore(role) {
var allowedAriaAttributes = aria.allowedAttr(role);
return allowedAriaAttributes.reduce(function(score, attribute) {
return score + (ariaAttributes.indexOf(attribute) > -1 ? 1 : 0);
}, 0);
};
var scored = roles.map(function(role) {
return {
score: getScore(role),
name: role
};
});
var sorted = scored.sort(function(scoredRoleA, scoredRoleB) {
return scoredRoleB.score - scoredRoleA.score;
});
return sorted.map(function(sortedRole) {
return sortedRole.name;
});
};
var roles = Object.keys(aria.lookupTable.role).map(function(role) {
var lookup = aria.lookupTable.role[role];
return {
name: role,
implicit: lookup && lookup.implicit
};
});
var availableImplicitRoles = roles.reduce(isValidImplicitRole, []);
if (!availableImplicitRoles.length) {
return null;
}
var nodeAttributes = node.attributes;
var ariaAttributes = [];
for (var i = 0, j = nodeAttributes.length; i < j; i++) {
var attr = nodeAttributes[i];
if (attr.name.match(/^aria-/)) {
ariaAttributes.push(attr.name);
}
}
return sortRolesByOptimalAriaContext(availableImplicitRoles, ariaAttributes).shift();
};
color.Color = function(red, green, blue, alpha) {
this.red = red;
this.green = green;
this.blue = blue;
this.alpha = alpha;
this.toHexString = function() {
var redString = Math.round(this.red).toString(16);
var greenString = Math.round(this.green).toString(16);
var blueString = Math.round(this.blue).toString(16);
return '#' + (this.red > 15.5 ? redString : '0' + redString) + (this.green > 15.5 ? greenString : '0' + greenString) + (this.blue > 15.5 ? blueString : '0' + blueString);
};
var rgbRegex = /^rgb\((\d+), (\d+), (\d+)\)$/;
var rgbaRegex = /^rgba\((\d+), (\d+), (\d+), (\d*(\.\d+)?)\)/;
this.parseRgbString = function(colorString) {
if (colorString === 'transparent') {
this.red = 0;
this.green = 0;
this.blue = 0;
this.alpha = 0;
return;
}
var match = colorString.match(rgbRegex);
if (match) {
this.red = parseInt(match[1], 10);
this.green = parseInt(match[2], 10);
this.blue = parseInt(match[3], 10);
this.alpha = 1;
return;
}
match = colorString.match(rgbaRegex);
if (match) {
this.red = parseInt(match[1], 10);
this.green = parseInt(match[2], 10);
this.blue = parseInt(match[3], 10);
this.alpha = parseFloat(match[4]);
return;
}
};
this.getRelativeLuminance = function() {
var rSRGB = this.red / 255;
var gSRGB = this.green / 255;
var bSRGB = this.blue / 255;
var r = rSRGB <= .03928 ? rSRGB / 12.92 : Math.pow((rSRGB + .055) / 1.055, 2.4);
var g = gSRGB <= .03928 ? gSRGB / 12.92 : Math.pow((gSRGB + .055) / 1.055, 2.4);
var b = bSRGB <= .03928 ? bSRGB / 12.92 : Math.pow((bSRGB + .055) / 1.055, 2.4);
return .2126 * r + .7152 * g + .0722 * b;
};
};
color.flattenColors = function(fgColor, bgColor) {
var alpha = fgColor.alpha;
var r = (1 - alpha) * bgColor.red + alpha * fgColor.red;
var g = (1 - alpha) * bgColor.green + alpha * fgColor.green;
var b = (1 - alpha) * bgColor.blue + alpha * fgColor.blue;
var a = fgColor.alpha + bgColor.alpha * (1 - fgColor.alpha);
return new color.Color(r, g, b, a);
};
color.getContrast = function(bgColor, fgColor) {
if (!fgColor || !bgColor) {
return null;
}
if (fgColor.alpha < 1) {
fgColor = color.flattenColors(fgColor, bgColor);
}
var bL = bgColor.getRelativeLuminance();
var fL = fgColor.getRelativeLuminance();
return (Math.max(fL, bL) + .05) / (Math.min(fL, bL) + .05);
};
color.hasValidContrastRatio = function(bg, fg, fontSize, isBold) {
var contrast = color.getContrast(bg, fg);
var isSmallFont = isBold && Math.ceil(fontSize * 72) / 96 < 14 || !isBold && Math.ceil(fontSize * 72) / 96 < 18;
var expectedContrastRatio = isSmallFont ? 4.5 : 3;
return {
isValid: contrast > expectedContrastRatio,
contrastRatio: contrast,
expectedContrastRatio: expectedContrastRatio
};
};
function _getFonts(style) {
return style.getPropertyValue('font-family').split(/[,;]/g).map(function(font) {
return font.trim().toLowerCase();
});
}
function elementIsDistinct(node, ancestorNode) {
var nodeStyle = window.getComputedStyle(node);
if (nodeStyle.getPropertyValue('background-image') !== 'none') {
return true;
}
var hasBorder = [ 'border-bottom', 'border-top', 'outline' ].reduce(function(result, edge) {
var borderClr = new color.Color();
borderClr.parseRgbString(nodeStyle.getPropertyValue(edge + '-color'));
return result || nodeStyle.getPropertyValue(edge + '-style') !== 'none' && parseFloat(nodeStyle.getPropertyValue(edge + '-width')) > 0 && borderClr.alpha !== 0;
}, false);
if (hasBorder) {
return true;
}
var parentStyle = window.getComputedStyle(ancestorNode);
if (_getFonts(nodeStyle)[0] !== _getFonts(parentStyle)[0]) {
return true;
}
var hasStyle = [ 'text-decoration-line', 'text-decoration-style', 'font-weight', 'font-style', 'font-size' ].reduce(function(result, cssProp) {
return result || nodeStyle.getPropertyValue(cssProp) !== parentStyle.getPropertyValue(cssProp);
}, false);
var tDec = nodeStyle.getPropertyValue('text-decoration');
if (tDec.split(' ').length < 3) {
hasStyle = hasStyle || tDec !== parentStyle.getPropertyValue('text-decoration');
}
return hasStyle;
}
color.elementIsDistinct = elementIsDistinct;
var graphicNodes = [ 'IMG', 'CANVAS', 'OBJECT', 'IFRAME', 'VIDEO', 'SVG' ];
function elmHasImage(elm, style) {
var nodeName = elm.nodeName.toUpperCase();
if (graphicNodes.includes(nodeName)) {
axe.commons.color.incompleteData.set('bgColor', 'imgNode');
return true;
}
style = style || window.getComputedStyle(elm);
var bgImageStyle = style.getPropertyValue('background-image');
var hasBgImage = bgImageStyle !== 'none';
if (hasBgImage) {
var hasGradient = /gradient/.test(bgImageStyle);
axe.commons.color.incompleteData.set('bgColor', hasGradient ? 'bgGradient' : 'bgImage');
}
return hasBgImage;
}
function getBgColor(elm, elmStyle) {
elmStyle = elmStyle || window.getComputedStyle(elm);
var bgColor = new color.Color();
bgColor.parseRgbString(elmStyle.getPropertyValue('background-color'));
if (bgColor.alpha !== 0) {
var opacity = elmStyle.getPropertyValue('opacity');
bgColor.alpha = bgColor.alpha * opacity;
}
return bgColor;
}
function contentOverlapping(targetElement, bgNode) {
var targetRect = targetElement.getClientRects()[0];
var obscuringElements = document.elementsFromPoint(targetRect.left, targetRect.top);
if (obscuringElements) {
for (var i = 0; i < obscuringElements.length; i++) {
if (obscuringElements[i] !== targetElement && obscuringElements[i] === bgNode) {
return true;
}
}
}
return false;
}
function calculateObscuringAlpha(elmIndex, elmStack, originalElm) {
var totalAlpha = 0;
if (elmIndex > 0) {
for (var i = elmIndex - 1; i >= 0; i--) {
var bgElm = elmStack[i];
var bgElmStyle = window.getComputedStyle(bgElm);
var bgColor = getBgColor(bgElm, bgElmStyle);
if (bgColor.alpha && contentOverlapping(originalElm, bgElm)) {
totalAlpha += bgColor.alpha;
} else {
elmStack.splice(i, 1);
}
}
}
return totalAlpha;
}
function elmPartiallyObscured(elm, bgElm, bgColor) {
var obscured = elm !== bgElm && !dom.visuallyContains(elm, bgElm) && bgColor.alpha !== 0;
if (obscured) {
axe.commons.color.incompleteData.set('bgColor', 'elmPartiallyObscured');
}
return obscured;
}
function includeMissingElements(elmStack, elm) {
var elementMap = {
TD: [ 'TR', 'TBODY' ],
TH: [ 'TR', 'THEAD' ],
INPUT: [ 'LABEL' ]
};
var tagArray = elmStack.map(function(elm) {
return elm.tagName;
});
var bgNodes = elmStack;
for (var candidate in elementMap) {
if (tagArray.includes(candidate)) {
for (var candidateIndex in elementMap[candidate]) {
if (candidate.hasOwnProperty(candidateIndex)) {
var ancestorMatch = axe.commons.dom.findUp(elm, elementMap[candidate][candidateIndex]);
if (ancestorMatch && elmStack.indexOf(ancestorMatch) === -1) {
var overlaps = axe.commons.dom.visuallyOverlaps(elm.getBoundingClientRect(), ancestorMatch);
if (overlaps) {
bgNodes.splice(tagArray.indexOf(candidate) + 1, 0, ancestorMatch);
}
}
if (elm.tagName === elementMap[candidate][candidateIndex] && tagArray.indexOf(elm.tagName) === -1) {
bgNodes.splice(tagArray.indexOf(candidate) + 1, 0, elm);
}
}
}
}
}
return bgNodes;
}
function sortPageBackground(elmStack) {
var bodyIndex = elmStack.indexOf(document.body);
var bgNodes = elmStack;
if (bodyIndex > 1 && !elmHasImage(document.documentElement) && getBgColor(document.documentElement).alpha === 0) {
bgNodes.splice(bodyIndex, 1);
bgNodes.splice(elmStack.indexOf(document.documentElement), 1);
bgNodes.push(document.body);
}
return bgNodes;
}
color.getCoords = function(rect) {
var x = void 0, y = void 0;
if (rect.left > window.innerWidth) {
return;
}
if (rect.top > window.innerHeight) {
return;
}
x = Math.min(Math.ceil(rect.left + rect.width / 2), window.innerWidth - 1);
y = Math.min(Math.ceil(rect.top + rect.height / 2), window.innerHeight - 1);
return {
x: x,
y: y
};
};
color.getRectStack = function(elm) {
var boundingCoords = color.getCoords(elm.getBoundingClientRect());
if (boundingCoords) {
var rects = Array.from(elm.getClientRects());
var boundingStack = Array.from(document.elementsFromPoint(boundingCoords.x, boundingCoords.y));
if (rects && rects.length > 1) {
var filteredArr = rects.filter(function(rect) {
return rect.width && rect.width > 0;
}).map(function(rect) {
var coords = color.getCoords(rect);
if (coords) {
return Array.from(document.elementsFromPoint(coords.x, coords.y));
}
});
filteredArr.splice(0, 0, boundingStack);
return filteredArr;
} else {
return [ boundingStack ];
}
}
return null;
};
color.filteredRectStack = function(elm) {
var rectStack = color.getRectStack(elm);
if (rectStack && rectStack.length === 1) {
return rectStack[0];
} else if (rectStack && rectStack.length > 1) {
var boundingStack = rectStack.shift();
var isSame = void 0;
rectStack.forEach(function(rectList, index) {
if (index === 0) {
return;
}
var rectA = rectStack[index - 1], rectB = rectStack[index];
isSame = rectA.every(function(element, elementIndex) {
return element === rectB[elementIndex];
}) || boundingStack.includes(elm);
});
if (!isSame) {
axe.commons.color.incompleteData.set('bgColor', 'elmPartiallyObscuring');
return null;
}
return rectStack[0];
} else {
axe.commons.color.incompleteData.set('bgColor', 'outsideViewport');
return null;
}
};
color.getBackgroundStack = function(elm) {
var elmStack = color.filteredRectStack(elm);
if (elmStack === null) {
return null;
}
elmStack = includeMissingElements(elmStack, elm);
elmStack = dom.reduceToElementsBelowFloating(elmStack, elm);
elmStack = sortPageBackground(elmStack);
var elmIndex = elmStack.indexOf(elm);
if (calculateObscuringAlpha(elmIndex, elmStack, elm) >= .99) {
axe.commons.color.incompleteData.set('bgColor', 'bgOverlap');
return null;
}
return elmIndex !== -1 ? elmStack : null;
};
color.getBackgroundColor = function(elm) {
var bgElms = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
var noScroll = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
if (noScroll !== true) {
var alignToTop = elm.clientHeight - 2 >= window.innerHeight * 2;
elm.scrollIntoView(alignToTop);
}
var bgColors = [];
var elmStack = color.getBackgroundStack(elm);
(elmStack || []).some(function(bgElm) {
var bgElmStyle = window.getComputedStyle(bgElm);
var bgColor = getBgColor(bgElm, bgElmStyle);
if (elmPartiallyObscured(elm, bgElm, bgColor) || elmHasImage(bgElm, bgElmStyle)) {
bgColors = null;
bgElms.push(bgElm);
return true;
}
if (bgColor.alpha !== 0) {
bgElms.push(bgElm);
bgColors.push(bgColor);
return bgColor.alpha === 1;
} else {
return false;
}
});
if (bgColors !== null && elmStack !== null) {
bgColors.push(new color.Color(255, 255, 255, 1));
var colors = bgColors.reduce(color.flattenColors);
return colors;
}
return null;
};
dom.isOpaque = function(node) {
var style = window.getComputedStyle(node);
return elmHasImage(node, style) || getBgColor(node, style).alpha === 1;
};
color.getForegroundColor = function(node, noScroll) {
var nodeStyle = window.getComputedStyle(node);
var fgColor = new color.Color();
fgColor.parseRgbString(nodeStyle.getPropertyValue('color'));
var opacity = nodeStyle.getPropertyValue('opacity');
fgColor.alpha = fgColor.alpha * opacity;
if (fgColor.alpha === 1) {
return fgColor;
}
var bgColor = color.getBackgroundColor(node, [], noScroll);
if (bgColor === null) {
var reason = axe.commons.color.incompleteData.get('bgColor');
axe.commons.color.incompleteData.set('fgColor', reason);
return null;
}
return color.flattenColors(fgColor, bgColor);
};
color.incompleteData = function() {
var data = {};
return {
set: function set(key, reason) {
if (typeof key !== 'string') {
throw new Error('Incomplete data: key must be a string');
}
if (reason) {
data[key] = reason;
}
return data[key];
},
get: function get(key) {
return data[key];
},
clear: function clear() {
data = {};
}
};
}();
dom.reduceToElementsBelowFloating = function(elements, targetNode) {
var floatingPositions = [ 'fixed', 'sticky' ], finalElements = [], targetFound = false, index, currentNode, style;
for (index = 0; index < elements.length; ++index) {
currentNode = elements[index];
if (currentNode === targetNode) {
targetFound = true;
}
style = window.getComputedStyle(currentNode);
if (!targetFound && floatingPositions.indexOf(style.position) !== -1) {
finalElements = [];
continue;
}
finalElements.push(currentNode);
}
return finalElements;
};
dom.findElmsInContext = function(_ref9) {
var context = _ref9.context, value = _ref9.value, attr = _ref9.attr, _ref9$elm = _ref9.elm, elm = _ref9$elm === undefined ? '' : _ref9$elm;
var root = void 0;
var escapedValue = axe.utils.escapeSelector(value);
if (context.nodeType === 9 || context.nodeType === 11) {
root = context;
} else {
root = dom.getRootNode(context);
}
return Array.from(root.querySelectorAll(elm + '[' + attr + '=' + escapedValue + ']'));
};
dom.findUp = function(element, target) {
return dom.findUpVirtual(axe.utils.getNodeFromTree(axe._tree[0], element), target);
};
dom.findUpVirtual = function(element, target) {
var parent = void 0;
parent = element.actualNode;
if (!element.shadowId && typeof element.actualNode.closest === 'function') {
var match = element.actualNode.closest(target);
if (match) {
return match;
}
return null;
}
do {
parent = parent.assignedSlot ? parent.assignedSlot : parent.parentNode;
if (parent && parent.nodeType === 11) {
parent = parent.host;
}
} while (parent && !axe.utils.matchesSelector(parent, target) && parent !== document.documentElement);
if (!axe.utils.matchesSelector(parent, target)) {
return null;
}
return parent;
};
dom.getComposedParent = function getComposedParent(element) {
if (element.assignedSlot) {
return getComposedParent(element.assignedSlot);
} else if (element.parentNode) {
var parentNode = element.parentNode;
if (parentNode.nodeType === 1) {
return parentNode;
} else if (parentNode.host) {
return parentNode.host;
}
}
return null;
};
dom.getElementByReference = function(node, attr) {
var fragment = node.getAttribute(attr);
if (fragment && fragment.charAt(0) === '#') {
fragment = fragment.substring(1);
var candidate = document.getElementById(fragment);
if (candidate) {
return candidate;
}
candidate = document.getElementsByName(fragment);
if (candidate.length) {
return candidate[0];
}
}
return null;
};
dom.getElementCoordinates = function(element) {
'use strict';
var scrollOffset = dom.getScrollOffset(document), xOffset = scrollOffset.left, yOffset = scrollOffset.top, coords = element.getBoundingClientRect();
return {
top: coords.top + yOffset,
right: coords.right + xOffset,
bottom: coords.bottom + yOffset,
left: coords.left + xOffset,
width: coords.right - coords.left,
height: coords.bottom - coords.top
};
};
dom.getRootNode = function(node) {
var doc = node.getRootNode && node.getRootNode() || document;
if (doc === node) {
doc = document;
}
return doc;
};
dom.getScrollOffset = function(element) {
'use strict';
if (!element.nodeType && element.document) {
element = element.document;
}
if (element.nodeType === 9) {
var docElement = element.documentElement, body = element.body;
return {
left: docElement && docElement.scrollLeft || body && body.scrollLeft || 0,
top: docElement && docElement.scrollTop || body && body.scrollTop || 0
};
}
return {
left: element.scrollLeft,
top: element.scrollTop
};
};
dom.getViewportSize = function(win) {
'use strict';
var body, doc = win.document, docElement = doc.documentElement;
if (win.innerWidth) {
return {
width: win.innerWidth,
height: win.innerHeight
};
}
if (docElement) {
return {
width: docElement.clientWidth,
height: docElement.clientHeight
};
}
body = doc.body;
return {
width: body.clientWidth,
height: body.clientHeight
};
};
var hiddenTextElms = [ 'HEAD', 'TITLE', 'TEMPLATE', 'SCRIPT', 'STYLE', 'IFRAME', 'OBJECT', 'VIDEO', 'AUDIO', 'NOSCRIPT' ];
function hasChildTextNodes(elm) {
if (!hiddenTextElms.includes(elm.actualNode.nodeName.toUpperCase())) {
return elm.children.some(function(_ref10) {
var actualNode = _ref10.actualNode;
return actualNode.nodeType === 3 && actualNode.nodeValue.trim();
});
}
}
dom.hasContentVirtual = function(elm, noRecursion) {
return hasChildTextNodes(elm) || dom.isVisualContent(elm.actualNode) || !!aria.labelVirtual(elm) || !noRecursion && elm.children.some(function(child) {
return child.actualNode.nodeType === 1 && dom.hasContentVirtual(child);
});
};
dom.hasContent = function hasContent(elm, noRecursion) {
elm = axe.utils.getNodeFromTree(axe._tree[0], elm);
return dom.hasContentVirtual(elm, noRecursion);
};
dom.idrefs = function(node, attr) {
'use strict';
var index, length, doc = dom.getRootNode(node), result = [], idrefs = node.getAttribute(attr);
if (idrefs) {
idrefs = axe.utils.tokenList(idrefs);
for (index = 0, length = idrefs.length; index < length; index++) {
result.push(doc.getElementById(idrefs[index]));
}
}
return result;
};
function focusDisabled(el) {
return el.disabled || !dom.isVisible(el, true) && el.nodeName.toUpperCase() !== 'AREA';
}
dom.isFocusable = function(el) {
'use strict';
if (focusDisabled(el)) {
return false;
} else if (dom.isNativelyFocusable(el)) {
return true;
}
var tabindex = el.getAttribute('tabindex');
if (tabindex && !isNaN(parseInt(tabindex, 10))) {
return true;
}
return false;
};
dom.isNativelyFocusable = function(el) {
'use strict';
if (!el || focusDisabled(el)) {
return false;
}
switch (el.nodeName.toUpperCase()) {
case 'A':
case 'AREA':
if (el.href) {
return true;
}
break;
case 'INPUT':
return el.type !== 'hidden';
case 'TEXTAREA':
case 'SELECT':
case 'DETAILS':
case 'BUTTON':
return true;
}
return false;
};
dom.insertedIntoFocusOrder = function(el) {
return el.tabIndex > -1 && dom.isFocusable(el) && !dom.isNativelyFocusable(el);
};
dom.isHTML5 = function(doc) {
var node = doc.doctype;
if (node === null) {
return false;
}
return node.name === 'html' && !node.publicId && !node.systemId;
};
function walkDomNode(node, functor) {
if (functor(node.actualNode) !== false) {
node.children.forEach(function(child) {
return walkDomNode(child, functor);
});
}
}
var blockLike = [ 'block', 'list-item', 'table', 'flex', 'grid', 'inline-block' ];
function isBlock(elm) {
var display = window.getComputedStyle(elm).getPropertyValue('display');
return blockLike.includes(display) || display.substr(0, 6) === 'table-';
}
function getBlockParent(node) {
var parentBlock = dom.getComposedParent(node);
while (parentBlock && !isBlock(parentBlock)) {
parentBlock = dom.getComposedParent(parentBlock);
}
return axe.utils.getNodeFromTree(axe._tree[0], parentBlock);
}
dom.isInTextBlock = function isInTextBlock(node) {
if (isBlock(node)) {
return false;
}
var virtualParent = getBlockParent(node);
var parentText = '';
var linkText = '';
var inBrBlock = 0;
walkDomNode(virtualParent, function(currNode) {
if (inBrBlock === 2) {
return false;
}
if (currNode.nodeType === 3) {
parentText += currNode.nodeValue;
}
if (currNode.nodeType !== 1) {
return;
}
var nodeName = (currNode.nodeName || '').toUpperCase();
if ([ 'BR', 'HR' ].includes(nodeName)) {
if (inBrBlock === 0) {
parentText = '';
linkText = '';
} else {
inBrBlock = 2;
}
} else if (currNode.style.display === 'none' || currNode.style.overflow === 'hidden' || ![ '', null, 'none' ].includes(currNode.style.float) || ![ '', null, 'relative' ].includes(currNode.style.position)) {
return false;
} else if (nodeName === 'A' && currNode.href || (currNode.getAttribute('role') || '').toLowerCase() === 'link') {
if (currNode === node) {
inBrBlock = 1;
}
linkText += currNode.textContent;
return false;
}
});
parentText = axe.commons.text.sanitize(parentText);
linkText = axe.commons.text.sanitize(linkText);
return parentText.length > linkText.length;
};
dom.isNode = function(element) {
'use strict';
return element instanceof Node;
};
function noParentScrolled(element, offset) {
element = dom.getComposedParent(element);
while (element && element.nodeName.toLowerCase() !== 'html') {
if (element.scrollTop) {
offset += element.scrollTop;
if (offset >= 0) {
return false;
}
}
element = dom.getComposedParent(element);
}
return true;
}
dom.isOffscreen = function(element) {
var leftBoundary = void 0;
var docElement = document.documentElement;
var styl = window.getComputedStyle(element);
var dir = window.getComputedStyle(document.body || docElement).getPropertyValue('direction');
var coords = dom.getElementCoordinates(element);
if (coords.bottom < 0 && (noParentScrolled(element, coords.bottom) || styl.position === 'absolute')) {
return true;
}
if (coords.left === 0 && coords.right === 0) {
return false;
}
if (dir === 'ltr') {
if (coords.right <= 0) {
return true;
}
} else {
leftBoundary = Math.max(docElement.scrollWidth, dom.getViewportSize(window).width);
if (coords.left >= leftBoundary) {
return true;
}
}
return false;
};
function isClipped(clip) {
'use strict';
var matches = clip.match(/rect\s*\(([0-9]+)px,?\s*([0-9]+)px,?\s*([0-9]+)px,?\s*([0-9]+)px\s*\)/);
if (matches && matches.length === 5) {
return matches[3] - matches[1] <= 0 && matches[2] - matches[4] <= 0;
}
return false;
}
dom.isVisible = function(el, screenReader, recursed) {
'use strict';
var style, nodeName, parent;
if (el.nodeType === 9) {
return true;
}
if (el.nodeType === 11) {
el = el.host;
}
style = window.getComputedStyle(el, null);
if (style === null) {
return false;
}
nodeName = el.nodeName.toUpperCase();
if (style.getPropertyValue('display') === 'none' || nodeName.toUpperCase() === 'STYLE' || nodeName.toUpperCase() === 'SCRIPT' || !screenReader && isClipped(style.getPropertyValue('clip')) || !recursed && (style.getPropertyValue('visibility') === 'hidden' || !screenReader && dom.isOffscreen(el)) || screenReader && el.getAttribute('aria-hidden') === 'true') {
return false;
}
parent = el.assignedSlot ? el.assignedSlot : el.parentNode;
if (parent) {
return dom.isVisible(parent, screenReader, true);
}
return false;
};
var visualRoles = [ 'checkbox', 'img', 'radio', 'range', 'slider', 'spinbutton', 'textbox' ];
dom.isVisualContent = function(element) {
var role = element.getAttribute('role');
if (role) {
return visualRoles.indexOf(role) !== -1;
}
switch (element.tagName.toUpperCase()) {
case 'IMG':
case 'IFRAME':
case 'OBJECT':
case 'VIDEO':
case 'AUDIO':
case 'CANVAS':
case 'SVG':
case 'MATH':
case 'BUTTON':
case 'SELECT':
case 'TEXTAREA':
case 'KEYGEN':
case 'PROGRESS':
case 'METER':
return true;
case 'INPUT':
return element.type !== 'hidden';
default:
return false;
}
};
dom.visuallyContains = function(node, parent) {
var rectBound = node.getBoundingClientRect();
var margin = .01;
var rect = {
top: rectBound.top + margin,
bottom: rectBound.bottom - margin,
left: rectBound.left + margin,
right: rectBound.right - margin
};
var parentRect = parent.getBoundingClientRect();
var parentTop = parentRect.top;
var parentLeft = parentRect.left;
var parentScrollArea = {
top: parentTop - parent.scrollTop,
bottom: parentTop - parent.scrollTop + parent.scrollHeight,
left: parentLeft - parent.scrollLeft,
right: parentLeft - parent.scrollLeft + parent.scrollWidth
};
var style = window.getComputedStyle(parent);
if (style.getPropertyValue('display') === 'inline') {
return true;
}
if (rect.left < parentScrollArea.left && rect.left < parentRect.left || rect.top < parentScrollArea.top && rect.top < parentRect.top || rect.right > parentScrollArea.right && rect.right > parentRect.right || rect.bottom > parentScrollArea.bottom && rect.bottom > parentRect.bottom) {
return false;
}
if (rect.right > parentRect.right || rect.bottom > parentRect.bottom) {
return style.overflow === 'scroll' || style.overflow === 'auto' || style.overflow === 'hidden' || parent instanceof HTMLBodyElement || parent instanceof HTMLHtmlElement;
}
return true;
};
dom.visuallyOverlaps = function(rect, parent) {
var parentRect = parent.getBoundingClientRect();
var parentTop = parentRect.top;
var parentLeft = parentRect.left;
var parentScrollArea = {
top: parentTop - parent.scrollTop,
bottom: parentTop - parent.scrollTop + parent.scrollHeight,
left: parentLeft - parent.scrollLeft,
right: parentLeft - parent.scrollLeft + parent.scrollWidth
};
if (rect.left > parentScrollArea.right && rect.left > parentRect.right || rect.top > parentScrollArea.bottom && rect.top > parentRect.bottom || rect.right < parentScrollArea.left && rect.right < parentRect.left || rect.bottom < parentScrollArea.top && rect.bottom < parentRect.top) {
return false;
}
var style = window.getComputedStyle(parent);
if (rect.left > parentRect.right || rect.top > parentRect.bottom) {
return style.overflow === 'scroll' || style.overflow === 'auto' || parent instanceof HTMLBodyElement || parent instanceof HTMLHtmlElement;
}
return true;
};
table.getAllCells = function(tableElm) {
var rowIndex, cellIndex, rowLength, cellLength;
var cells = [];
for (rowIndex = 0, rowLength = tableElm.rows.length; rowIndex < rowLength; rowIndex++) {
for (cellIndex = 0, cellLength = tableElm.rows[rowIndex].cells.length; cellIndex < cellLength; cellIndex++) {
cells.push(tableElm.rows[rowIndex].cells[cellIndex]);
}
}
return cells;
};
table.getCellPosition = function(cell, tableGrid) {
var rowIndex, index;
if (!tableGrid) {
tableGrid = table.toGrid(dom.findUp(cell, 'table'));
}
for (rowIndex = 0; rowIndex < tableGrid.length; rowIndex++) {
if (tableGrid[rowIndex]) {
index = tableGrid[rowIndex].indexOf(cell);
if (index !== -1) {
return {
x: index,
y: rowIndex
};
}
}
}
};
table.getHeaders = function(cell) {
if (cell.hasAttribute('headers')) {
return commons.dom.idrefs(cell, 'headers');
}
var tableGrid = commons.table.toGrid(commons.dom.findUp(cell, 'table'));
var position = commons.table.getCellPosition(cell, tableGrid);
var rowHeaders = table.traverse('left', position, tableGrid).filter(function(cell) {
return table.isRowHeader(cell);
});
var colHeaders = table.traverse('up', position, tableGrid).filter(function(cell) {
return table.isColumnHeader(cell);
});
return [].concat(rowHeaders, colHeaders).reverse();
};
table.getScope = function(cell) {
var scope = cell.getAttribute('scope');
var role = cell.getAttribute('role');
if (cell instanceof Element === false || [ 'TD', 'TH' ].indexOf(cell.nodeName.toUpperCase()) === -1) {
throw new TypeError('Expected TD or TH element');
}
if (role === 'columnheader') {
return 'col';
} else if (role === 'rowheader') {
return 'row';
} else if (scope === 'col' || scope === 'row') {
return scope;
} else if (cell.nodeName.toUpperCase() !== 'TH') {
return false;
}
var tableGrid = table.toGrid(dom.findUp(cell, 'table'));
var pos = table.getCellPosition(cell);
var headerRow = tableGrid[pos.y].reduce(function(headerRow, cell) {
return headerRow && cell.nodeName.toUpperCase() === 'TH';
}, true);
if (headerRow) {
return 'col';
}
var headerCol = tableGrid.map(function(col) {
return col[pos.x];
}).reduce(function(headerCol, cell) {
return headerCol && cell.nodeName.toUpperCase() === 'TH';
}, true);
if (headerCol) {
return 'row';
}
return 'auto';
};
table.isColumnHeader = function(element) {
return [ 'col', 'auto' ].indexOf(table.getScope(element)) !== -1;
};
table.isDataCell = function(cell) {
if (!cell.children.length && !cell.textContent.trim()) {
return false;
}
return cell.nodeName.toUpperCase() === 'TD';
};
table.isDataTable = function(node) {
var role = (node.getAttribute('role') || '').toLowerCase();
if ((role === 'presentation' || role === 'none') && !dom.isFocusable(node)) {
return false;
}
if (node.getAttribute('contenteditable') === 'true' || dom.findUp(node, '[contenteditable="true"]')) {
return true;
}
if (role === 'grid' || role === 'treegrid' || role === 'table') {
return true;
}
if (commons.aria.getRoleType(role) === 'landmark') {
return true;
}
if (node.getAttribute('datatable') === '0') {
return false;
}
if (node.getAttribute('summary')) {
return true;
}
if (node.tHead || node.tFoot || node.caption) {
return true;
}
for (var childIndex = 0, childLength = node.children.length; childIndex < childLength; childIndex++) {
if (node.children[childIndex].nodeName.toUpperCase() === 'COLGROUP') {
return true;
}
}
var cells = 0;
var rowLength = node.rows.length;
var row, cell;
var hasBorder = false;
for (var rowIndex = 0; rowIndex < rowLength; rowIndex++) {
row = node.rows[rowIndex];
for (var cellIndex = 0, cellLength = row.cells.length; cellIndex < cellLength; cellIndex++) {
cell = row.cells[cellIndex];
if (cell.nodeName.toUpperCase() === 'TH') {
return true;
}
if (!hasBorder && (cell.offsetWidth !== cell.clientWidth || cell.offsetHeight !== cell.clientHeight)) {
hasBorder = true;
}
if (cell.getAttribute('scope') || cell.getAttribute('headers') || cell.getAttribute('abbr')) {
return true;
}
if ([ 'columnheader', 'rowheader' ].includes((cell.getAttribute('role') || '').toLowerCase())) {
return true;
}
if (cell.children.length === 1 && cell.children[0].nodeName.toUpperCase() === 'ABBR') {
return true;
}
cells++;
}
}
if (node.getElementsByTagName('table').length) {
return false;
}
if (rowLength < 2) {
return false;
}
var sampleRow = node.rows[Math.ceil(rowLength / 2)];
if (sampleRow.cells.length === 1 && sampleRow.cells[0].colSpan === 1) {
return false;
}
if (sampleRow.cells.length >= 5) {
return true;
}
if (hasBorder) {
return true;
}
var bgColor, bgImage;
for (rowIndex = 0; rowIndex < rowLength; rowIndex++) {
row = node.rows[rowIndex];
if (bgColor && bgColor !== window.getComputedStyle(row).getPropertyValue('background-color')) {
return true;
} else {
bgColor = window.getComputedStyle(row).getPropertyValue('background-color');
}
if (bgImage && bgImage !== window.getComputedStyle(row).getPropertyValue('background-image')) {
return true;
} else {
bgImage = window.getComputedStyle(row).getPropertyValue('background-image');
}
}
if (rowLength >= 20) {
return true;
}
if (dom.getElementCoordinates(node).width > dom.getViewportSize(window).width * .95) {
return false;
}
if (cells < 10) {
return false;
}
if (node.querySelector('object, embed, iframe, applet')) {
return false;
}
return true;
};
table.isHeader = function(cell) {
if (table.isColumnHeader(cell) || table.isRowHeader(cell)) {
return true;
}
if (cell.getAttribute('id')) {
var id = axe.utils.escapeSelector(cell.getAttribute('id'));
return !!document.querySelector('[headers~="' + id + '"]');
}
return false;
};
table.isRowHeader = function(cell) {
return [ 'row', 'auto' ].includes(table.getScope(cell));
};
table.toGrid = function(node) {
var table = [];
var rows = node.rows;
for (var i = 0, rowLength = rows.length; i < rowLength; i++) {
var cells = rows[i].cells;
table[i] = table[i] || [];
var columnIndex = 0;
for (var j = 0, cellLength = cells.length; j < cellLength; j++) {
for (var colSpan = 0; colSpan < cells[j].colSpan; colSpan++) {
for (var rowSpan = 0; rowSpan < cells[j].rowSpan; rowSpan++) {
table[i + rowSpan] = table[i + rowSpan] || [];
while (table[i + rowSpan][columnIndex]) {
columnIndex++;
}
table[i + rowSpan][columnIndex] = cells[j];
}
columnIndex++;
}
}
}
return table;
};
table.toArray = table.toGrid;
(function(table) {
var traverseTable = function traverseTable(dir, position, tableGrid, callback) {
var result;
var cell = tableGrid[position.y] ? tableGrid[position.y][position.x] : undefined;
if (!cell) {
return [];
}
if (typeof callback === 'function') {
result = callback(cell, position, tableGrid);
if (result === true) {
return [ cell ];
}
}
result = traverseTable(dir, {
x: position.x + dir.x,
y: position.y + dir.y
}, tableGrid, callback);
result.unshift(cell);
return result;
};
table.traverse = function(dir, startPos, tableGrid, callback) {
if (Array.isArray(startPos)) {
callback = tableGrid;
tableGrid = startPos;
startPos = {
x: 0,
y: 0
};
}
if (typeof dir === 'string') {
switch (dir) {
case 'left':
dir = {
x: -1,
y: 0
};
break;
case 'up':
dir = {
x: 0,
y: -1
};
break;
case 'right':
dir = {
x: 1,
y: 0
};
break;
case 'down':
dir = {
x: 0,
y: 1
};
break;
}
}
return traverseTable(dir, {
x: startPos.x + dir.x,
y: startPos.y + dir.y
}, tableGrid, callback);
};
})(table);
var defaultButtonValues = {
submit: 'Submit',
reset: 'Reset'
};
var inputTypes = [ 'text', 'search', 'tel', 'url', 'email', 'date', 'time', 'number', 'range', 'color' ];
var phrasingElements = [ 'A', 'EM', 'STRONG', 'SMALL', 'MARK', 'ABBR', 'DFN', 'I', 'B', 'S', 'U', 'CODE', 'VAR', 'SAMP', 'KBD', 'SUP', 'SUB', 'Q', 'CITE', 'SPAN', 'BDO', 'BDI', 'BR', 'WBR', 'INS', 'DEL', 'IMG', 'EMBED', 'OBJECT', 'IFRAME', 'MAP', 'AREA', 'SCRIPT', 'NOSCRIPT', 'RUBY', 'VIDEO', 'AUDIO', 'INPUT', 'TEXTAREA', 'SELECT', 'BUTTON', 'LABEL', 'OUTPUT', 'DATALIST', 'KEYGEN', 'PROGRESS', 'COMMAND', 'CANVAS', 'TIME', 'METER' ];
function findLabel(virtualNode) {
var label = void 0;
if (virtualNode.actualNode.id) {
label = dom.findElmsInContext({
elm: 'label',
attr: 'for',
value: virtualNode.actualNode.id,
context: virtualNode.actualNode
})[0];
} else {
label = dom.findUpVirtual(virtualNode, 'label');
}
return axe.utils.getNodeFromTree(axe._tree[0], label);
}
function isButton(_ref11) {
var actualNode = _ref11.actualNode;
return [ 'button', 'reset', 'submit' ].includes(actualNode.type.toLowerCase());
}
function isInput(_ref12) {
var actualNode = _ref12.actualNode;
var nodeName = actualNode.nodeName.toUpperCase();
return nodeName === 'TEXTAREA' || nodeName === 'SELECT' || nodeName === 'INPUT' && actualNode.type.toLowerCase() !== 'hidden';
}
function shouldCheckSubtree(_ref13) {
var actualNode = _ref13.actualNode;
return [ 'BUTTON', 'SUMMARY', 'A' ].includes(actualNode.nodeName.toUpperCase());
}
function shouldNeverCheckSubtree(_ref14) {
var actualNode = _ref14.actualNode;
return [ 'TABLE', 'FIGURE' ].includes(actualNode.nodeName.toUpperCase());
}
function formValueText(_ref15) {
var actualNode = _ref15.actualNode;
var nodeName = actualNode.nodeName.toUpperCase();
if (nodeName === 'INPUT') {
if (!actualNode.hasAttribute('type') || inputTypes.includes(actualNode.type.toLowerCase())) {
return actualNode.value;
}
return '';
}
if (nodeName === 'SELECT') {
var opts = actualNode.options;
if (opts && opts.length) {
var returnText = '';
for (var i = 0; i < opts.length; i++) {
if (opts[i].selected) {
returnText += ' ' + opts[i].text;
}
}
return text.sanitize(returnText);
}
return '';
}
if (nodeName === 'TEXTAREA' && actualNode.value) {
return actualNode.value;
}
return '';
}
function checkDescendant(_ref16, nodeName) {
var actualNode = _ref16.actualNode;
var candidate = actualNode.querySelector(nodeName.toLowerCase());
if (candidate) {
return text.accessibleText(candidate);
}
return '';
}
function isEmbeddedControl(elm) {
if (!elm) {
return false;
}
var actualNode = elm.actualNode;
switch (actualNode.nodeName.toUpperCase()) {
case 'SELECT':
case 'TEXTAREA':
return true;
case 'INPUT':
return !actualNode.hasAttribute('type') || inputTypes.includes(actualNode.getAttribute('type').toLowerCase());
default:
return false;
}
}
function shouldCheckAlt(_ref17) {
var actualNode = _ref17.actualNode;
var nodeName = actualNode.nodeName.toUpperCase();
return [ 'IMG', 'APPLET', 'AREA' ].includes(nodeName) || nodeName === 'INPUT' && actualNode.type.toLowerCase() === 'image';
}
function nonEmptyText(t) {
return !!text.sanitize(t);
}
text.accessibleText = function accessibleText(element, inLabelledByContext) {
var virtualNode = axe.utils.getNodeFromTree(axe._tree[0], element);
return axe.commons.text.accessibleTextVirtual(virtualNode, inLabelledByContext);
};
text.accessibleTextVirtual = function accessibleTextVirtual(element, inLabelledByContext) {
var accessibleNameComputation = void 0;
var encounteredNodes = [];
if (element instanceof Node) {
element = axe.utils.getNodeFromTree(axe._tree[0], element);
}
function getInnerText(element, inLabelledByContext, inControlContext) {
return element.children.reduce(function(returnText, child) {
var actualNode = child.actualNode;
if (actualNode.nodeType === 3) {
returnText += actualNode.nodeValue;
} else if (actualNode.nodeType === 1) {
if (!phrasingElements.includes(actualNode.nodeName.toUpperCase())) {
returnText += ' ';
}
returnText += accessibleNameComputation(child, inLabelledByContext, inControlContext);
}
return returnText;
}, '');
}
function getLayoutTableText(element) {
if (!axe.commons.table.isDataTable(element.actualNode) && axe.commons.table.getAllCells(element.actualNode).length === 1) {
return getInnerText(element, false, false).trim();
}
return '';
}
function checkNative(element, inLabelledByContext, inControlContext) {
var returnText = '';
var actualNode = element.actualNode;
var nodeName = actualNode.nodeName.toUpperCase();
if (shouldCheckSubtree(element)) {
returnText = getInnerText(element, false, false) || '';
if (nonEmptyText(returnText)) {
return returnText;
}
}
if (nodeName === 'FIGURE') {
returnText = checkDescendant(element, 'figcaption');
if (nonEmptyText(returnText)) {
return returnText;
}
}
if (nodeName === 'TABLE') {
returnText = checkDescendant(element, 'caption');
if (nonEmptyText(returnText)) {
return returnText;
}
returnText = actualNode.getAttribute('title') || actualNode.getAttribute('summary') || getLayoutTableText(element) || '';
if (nonEmptyText(returnText)) {
return returnText;
}
}
if (shouldCheckAlt(element)) {
return actualNode.getAttribute('alt') || '';
}
if (isInput(element) && !inControlContext) {
if (isButton(element)) {
return actualNode.value || actualNode.title || defaultButtonValues[actualNode.type] || '';
}
var labelElement = findLabel(element);
if (labelElement) {
return accessibleNameComputation(labelElement, inLabelledByContext, true);
}
}
return '';
}
function checkARIA(element, inLabelledByContext, inControlContext) {
var returnText = '';
var actualNode = element.actualNode;
if (!inLabelledByContext && actualNode.hasAttribute('aria-labelledby')) {
returnText = text.sanitize(dom.idrefs(actualNode, 'aria-labelledby').map(function(label) {
if (label !== null) {
if (actualNode === label) {
encounteredNodes.pop();
}
var vLabel = axe.utils.getNodeFromTree(axe._tree[0], label);
return accessibleNameComputation(vLabel, true, actualNode !== label);
} else {
return '';
}
}).join(' '));
}
if (!returnText && !(inControlContext && isEmbeddedControl(element)) && actualNode.hasAttribute('aria-label')) {
return text.sanitize(actualNode.getAttribute('aria-label'));
}
return returnText;
}
accessibleNameComputation = function accessibleNameComputation(element, inLabelledByContext, inControlContext) {
var returnText = void 0;
if (!element || encounteredNodes.includes(element)) {
return '';
} else if (element !== null && element.actualNode instanceof Node !== true) {
throw new Error('Invalid argument. Virtual Node must be provided');
} else if (!inLabelledByContext && !dom.isVisible(element.actualNode, true)) {
return '';
}
encounteredNodes.push(element);
var role = element.actualNode.getAttribute('role');
returnText = checkARIA(element, inLabelledByContext, inControlContext);
if (nonEmptyText(returnText)) {
return returnText;
}
returnText = checkNative(element, inLabelledByContext, inControlContext);
if (nonEmptyText(returnText)) {
return returnText;
}
if (inControlContext) {
returnText = formValueText(element);
if (nonEmptyText(returnText)) {
return returnText;
}
}
if (!shouldNeverCheckSubtree(element) && (!role || aria.getRolesWithNameFromContents().indexOf(role) !== -1)) {
returnText = getInnerText(element, inLabelledByContext, inControlContext);
if (nonEmptyText(returnText)) {
return returnText;
}
}
if (element.actualNode.hasAttribute('title')) {
return element.actualNode.getAttribute('title');
}
return '';
};
return text.sanitize(accessibleNameComputation(element, inLabelledByContext));
};
text.labelVirtual = function(node) {
var ref, candidate, doc;
candidate = aria.labelVirtual(node);
if (candidate) {
return candidate;
}
if (node.actualNode.id) {
var id = axe.commons.utils.escapeSelector(node.actualNode.getAttribute('id'));
doc = axe.commons.dom.getRootNode(node.actualNode);
ref = doc.querySelector('label[for="' + id + '"]');
candidate = ref && text.visible(ref, true);
if (candidate) {
return candidate;
}
}
ref = dom.findUpVirtual(node, 'label');
candidate = ref && text.visible(ref, true);
if (candidate) {
return candidate;
}
return null;
};
text.label = function(node) {
node = axe.utils.getNodeFromTree(axe._tree[0], node);
return text.labelVirtual(node);
};
text.sanitize = function(str) {
'use strict';
return str.replace(/\r\n/g, '\n').replace(/\u00A0/g, ' ').replace(/[\s]{2,}/g, ' ').trim();
};
text.visibleVirtual = function(element, screenReader, noRecursing) {
var result = element.children.map(function(child) {
if (child.actualNode.nodeType === 3) {
var nodeValue = child.actualNode.nodeValue;
if (nodeValue && dom.isVisible(element.actualNode, screenReader)) {
return nodeValue;
}
} else if (!noRecursing) {
return text.visibleVirtual(child, screenReader);
}
}).join('');
return text.sanitize(result);
};
text.visible = function(element, screenReader, noRecursing) {
element = axe.utils.getNodeFromTree(axe._tree[0], element);
return text.visibleVirtual(element, screenReader, noRecursing);
};
axe.utils.tokenList = function(str) {
'use strict';
return str.trim().replace(/\s{2,}/g, ' ').split(' ');
};
var langs = [ 'aa', 'ab', 'ae', 'af', 'ak', 'am', 'an', 'ar', 'as', 'av', 'ay', 'az', 'ba', 'be', 'bg', 'bh', 'bi', 'bm', 'bn', 'bo', 'br', 'bs', 'ca', 'ce', 'ch', 'co', 'cr', 'cs', 'cu', 'cv', 'cy', 'da', 'de', 'dv', 'dz', 'ee', 'el', 'en', 'eo', 'es', 'et', 'eu', 'fa', 'ff', 'fi', 'fj', 'fo', 'fr', 'fy', 'ga', 'gd', 'gl', 'gn', 'gu', 'gv', 'ha', 'he', 'hi', 'ho', 'hr', 'ht', 'hu', 'hy', 'hz', 'ia', 'id', 'ie', 'ig', 'ii', 'ik', 'in', 'io', 'is', 'it', 'iu', 'iw', 'ja', 'ji', 'jv', 'jw', 'ka', 'kg', 'ki', 'kj', 'kk', 'kl', 'km', 'kn', 'ko', 'kr', 'ks', 'ku', 'kv', 'kw', 'ky', 'la', 'lb', 'lg', 'li', 'ln', 'lo', 'lt', 'lu', 'lv', 'mg', 'mh', 'mi', 'mk', 'ml', 'mn', 'mo', 'mr', 'ms', 'mt', 'my', 'na', 'nb', 'nd', 'ne', 'ng', 'nl', 'nn', 'no', 'nr', 'nv', 'ny', 'oc', 'oj', 'om', 'or', 'os', 'pa', 'pi', 'pl', 'ps', 'pt', 'qu', 'rm', 'rn', 'ro', 'ru', 'rw', 'sa', 'sc', 'sd', 'se', 'sg', 'sh', 'si', 'sk', 'sl', 'sm', 'sn', 'so', 'sq', 'sr', 'ss', 'st', 'su', 'sv', 'sw', 'ta', 'te', 'tg', 'th', 'ti', 'tk', 'tl', 'tn', 'to', 'tr', 'ts', 'tt', 'tw', 'ty', 'ug', 'uk', 'ur', 'uz', 've', 'vi', 'vo', 'wa', 'wo', 'xh', 'yi', 'yo', 'za', 'zh', 'zu', 'aaa', 'aab', 'aac', 'aad', 'aae', 'aaf', 'aag', 'aah', 'aai', 'aak', 'aal', 'aam', 'aan', 'aao', 'aap', 'aaq', 'aas', 'aat', 'aau', 'aav', 'aaw', 'aax', 'aaz', 'aba', 'abb', 'abc', 'abd', 'abe', 'abf', 'abg', 'abh', 'abi', 'abj', 'abl', 'abm', 'abn', 'abo', 'abp', 'abq', 'abr', 'abs', 'abt', 'abu', 'abv', 'abw', 'abx', 'aby', 'abz', 'aca', 'acb', 'acd', 'ace', 'acf', 'ach', 'aci', 'ack', 'acl', 'acm', 'acn', 'acp', 'acq', 'acr', 'acs', 'act', 'acu', 'acv', 'acw', 'acx', 'acy', 'acz', 'ada', 'adb', 'add', 'ade', 'adf', 'adg', 'adh', 'adi', 'adj', 'adl', 'adn', 'ado', 'adp', 'adq', 'adr', 'ads', 'adt', 'adu', 'adw', 'adx', 'ady', 'adz', 'aea', 'aeb', 'aec', 'aed', 'aee', 'aek', 'ael', 'aem', 'aen', 'aeq', 'aer', 'aes', 'aeu', 'aew', 'aey', 'aez', 'afa', 'afb', 'afd', 'afe', 'afg', 'afh', 'afi', 'afk', 'afn', 'afo', 'afp', 'afs', 'aft', 'afu', 'afz', 'aga', 'agb', 'agc', 'agd', 'age', 'agf', 'agg', 'agh', 'agi', 'agj', 'agk', 'agl', 'agm', 'agn', 'ago', 'agp', 'agq', 'agr', 'ags', 'agt', 'agu', 'agv', 'agw', 'agx', 'agy', 'agz', 'aha', 'ahb', 'ahg', 'ahh', 'ahi', 'ahk', 'ahl', 'ahm', 'ahn', 'aho', 'ahp', 'ahr', 'ahs', 'aht', 'aia', 'aib', 'aic', 'aid', 'aie', 'aif', 'aig', 'aih', 'aii', 'aij', 'aik', 'ail', 'aim', 'ain', 'aio', 'aip', 'aiq', 'air', 'ais', 'ait', 'aiw', 'aix', 'aiy', 'aja', 'ajg', 'aji', 'ajn', 'ajp', 'ajt', 'aju', 'ajw', 'ajz', 'akb', 'akc', 'akd', 'ake', 'akf', 'akg', 'akh', 'aki', 'akj', 'akk', 'akl', 'akm', 'ako', 'akp', 'akq', 'akr', 'aks', 'akt', 'aku', 'akv', 'akw', 'akx', 'aky', 'akz', 'ala', 'alc', 'ald', 'ale', 'alf', 'alg', 'alh', 'ali', 'alj', 'alk', 'all', 'alm', 'aln', 'alo', 'alp', 'alq', 'alr', 'als', 'alt', 'alu', 'alv', 'alw', 'alx', 'aly', 'alz', 'ama', 'amb', 'amc', 'ame', 'amf', 'amg', 'ami', 'amj', 'amk', 'aml', 'amm', 'amn', 'amo', 'amp', 'amq', 'amr', 'ams', 'amt', 'amu', 'amv', 'amw', 'amx', 'amy', 'amz', 'ana', 'anb', 'anc', 'and', 'ane', 'anf', 'ang', 'anh', 'ani', 'anj', 'ank', 'anl', 'anm', 'ann', 'ano', 'anp', 'anq', 'anr', 'ans', 'ant', 'anu', 'anv', 'anw', 'anx', 'any', 'anz', 'aoa', 'aob', 'aoc', 'aod', 'aoe', 'aof', 'aog', 'aoh', 'aoi', 'aoj', 'aok', 'aol', 'aom', 'aon', 'aor', 'aos', 'aot', 'aou', 'aox', 'aoz', 'apa', 'apb', 'apc', 'apd', 'ape', 'apf', 'apg', 'aph', 'api', 'apj', 'apk', 'apl', 'apm', 'apn', 'apo', 'app', 'apq', 'apr', 'aps', 'apt', 'apu', 'apv', 'apw', 'apx', 'apy', 'apz', 'aqa', 'aqc', 'aqd', 'aqg', 'aql', 'aqm', 'aqn', 'aqp', 'aqr', 'aqt', 'aqz', 'arb', 'arc', 'ard', 'are', 'arh', 'ari', 'arj', 'ark', 'arl', 'arn', 'aro', 'arp', 'arq', 'arr', 'ars', 'art', 'aru', 'arv', 'arw', 'arx', 'ary', 'arz', 'asa', 'asb', 'asc', 'asd', 'ase', 'asf', 'asg', 'ash', 'asi', 'asj', 'ask', 'asl', 'asn', 'aso', 'asp', 'asq', 'asr', 'ass', 'ast', 'asu', 'asv', 'asw', 'asx', 'asy', 'asz', 'ata', 'atb', 'atc', 'atd', 'ate', 'atg', 'ath', 'ati', 'atj', 'atk', 'atl', 'atm', 'atn', 'ato', 'atp', 'atq', 'atr', 'ats', 'att', 'atu', 'atv', 'atw', 'atx', 'aty', 'atz', 'aua', 'aub', 'auc', 'aud', 'aue', 'auf', 'aug', 'auh', 'aui', 'auj', 'auk', 'aul', 'aum', 'aun', 'auo', 'aup', 'auq', 'aur', 'aus', 'aut', 'auu', 'auw', 'aux', 'auy', 'auz', 'avb', 'avd', 'avi', 'avk', 'avl', 'avm', 'avn', 'avo', 'avs', 'avt', 'avu', 'avv', 'awa', 'awb', 'awc', 'awd', 'awe', 'awg', 'awh', 'awi', 'awk', 'awm', 'awn', 'awo', 'awr', 'aws', 'awt', 'awu', 'awv', 'aww', 'awx', 'awy', 'axb', 'axe', 'axg', 'axk', 'axl', 'axm', 'axx', 'aya', 'ayb', 'ayc', 'ayd', 'aye', 'ayg', 'ayh', 'ayi', 'ayk', 'ayl', 'ayn', 'ayo', 'ayp', 'ayq', 'ayr', 'ays', 'ayt', 'ayu', 'ayx', 'ayy', 'ayz', 'aza', 'azb', 'azc', 'azd', 'azg', 'azj', 'azm', 'azn', 'azo', 'azt', 'azz', 'baa', 'bab', 'bac', 'bad', 'bae', 'baf', 'bag', 'bah', 'bai', 'baj', 'bal', 'ban', 'bao', 'bap', 'bar', 'bas', 'bat', 'bau', 'bav', 'baw', 'bax', 'bay', 'baz', 'bba', 'bbb', 'bbc', 'bbd', 'bbe', 'bbf', 'bbg', 'bbh', 'bbi', 'bbj', 'bbk', 'bbl', 'bbm', 'bbn', 'bbo', 'bbp', 'bbq', 'bbr', 'bbs', 'bbt', 'bbu', 'bbv', 'bbw', 'bbx', 'bby', 'bbz', 'bca', 'bcb', 'bcc', 'bcd', 'bce', 'bcf', 'bcg', 'bch', 'bci', 'bcj', 'bck', 'bcl', 'bcm', 'bcn', 'bco', 'bcp', 'bcq', 'bcr', 'bcs', 'bct', 'bcu', 'bcv', 'bcw', 'bcy', 'bcz', 'bda', 'bdb', 'bdc', 'bdd', 'bde', 'bdf', 'bdg', 'bdh', 'bdi', 'bdj', 'bdk', 'bdl', 'bdm', 'bdn', 'bdo', 'bdp', 'bdq', 'bdr', 'bds', 'bdt', 'bdu', 'bdv', 'bdw', 'bdx', 'bdy', 'bdz', 'bea', 'beb', 'bec', 'bed', 'bee', 'bef', 'beg', 'beh', 'bei', 'bej', 'bek', 'bem', 'beo', 'bep', 'beq', 'ber', 'bes', 'bet', 'beu', 'bev', 'bew', 'bex', 'bey', 'bez', 'bfa', 'bfb', 'bfc', 'bfd', 'bfe', 'bff', 'bfg', 'bfh', 'bfi', 'bfj', 'bfk', 'bfl', 'bfm', 'bfn', 'bfo', 'bfp', 'bfq', 'bfr', 'bfs', 'bft', 'bfu', 'bfw', 'bfx', 'bfy', 'bfz', 'bga', 'bgb', 'bgc', 'bgd', 'bge', 'bgf', 'bgg', 'bgi', 'bgj', 'bgk', 'bgl', 'bgm', 'bgn', 'bgo', 'bgp', 'bgq', 'bgr', 'bgs', 'bgt', 'bgu', 'bgv', 'bgw', 'bgx', 'bgy', 'bgz', 'bha', 'bhb', 'bhc', 'bhd', 'bhe', 'bhf', 'bhg', 'bhh', 'bhi', 'bhj', 'bhk', 'bhl', 'bhm', 'bhn', 'bho', 'bhp', 'bhq', 'bhr', 'bhs', 'bht', 'bhu', 'bhv', 'bhw', 'bhx', 'bhy', 'bhz', 'bia', 'bib', 'bic', 'bid', 'bie', 'bif', 'big', 'bij', 'bik', 'bil', 'bim', 'bin', 'bio', 'bip', 'biq', 'bir', 'bit', 'biu', 'biv', 'biw', 'bix', 'biy', 'biz', 'bja', 'bjb', 'bjc', 'bjd', 'bje', 'bjf', 'bjg', 'bjh', 'bji', 'bjj', 'bjk', 'bjl', 'bjm', 'bjn', 'bjo', 'bjp', 'bjq', 'bjr', 'bjs', 'bjt', 'bju', 'bjv', 'bjw', 'bjx', 'bjy', 'bjz', 'bka', 'bkb', 'bkc', 'bkd', 'bkf', 'bkg', 'bkh', 'bki', 'bkj', 'bkk', 'bkl', 'bkm', 'bkn', 'bko', 'bkp', 'bkq', 'bkr', 'bks', 'bkt', 'bku', 'bkv', 'bkw', 'bkx', 'bky', 'bkz', 'bla', 'blb', 'blc', 'bld', 'ble', 'blf', 'blg', 'blh', 'bli', 'blj', 'blk', 'bll', 'blm', 'bln', 'blo', 'blp', 'blq', 'blr', 'bls', 'blt', 'blv', 'blw', 'blx', 'bly', 'blz', 'bma', 'bmb', 'bmc', 'bmd', 'bme', 'bmf', 'bmg', 'bmh', 'bmi', 'bmj', 'bmk', 'bml', 'bmm', 'bmn', 'bmo', 'bmp', 'bmq', 'bmr', 'bms', 'bmt', 'bmu', 'bmv', 'bmw', 'bmx', 'bmy', 'bmz', 'bna', 'bnb', 'bnc', 'bnd', 'bne', 'bnf', 'bng', 'bni', 'bnj', 'bnk', 'bnl', 'bnm', 'bnn', 'bno', 'bnp', 'bnq', 'bnr', 'bns', 'bnt', 'bnu', 'bnv', 'bnw', 'bnx', 'bny', 'bnz', 'boa', 'bob', 'boe', 'bof', 'bog', 'boh', 'boi', 'boj', 'bok', 'bol', 'bom', 'bon', 'boo', 'bop', 'boq', 'bor', 'bot', 'bou', 'bov', 'bow', 'box', 'boy', 'boz', 'bpa', 'bpb', 'bpd', 'bpg', 'bph', 'bpi', 'bpj', 'bpk', 'bpl', 'bpm', 'bpn', 'bpo', 'bpp', 'bpq', 'bpr', 'bps', 'bpt', 'bpu', 'bpv', 'bpw', 'bpx', 'bpy', 'bpz', 'bqa', 'bqb', 'bqc', 'bqd', 'bqf', 'bqg', 'bqh', 'bqi', 'bqj', 'bqk', 'bql', 'bqm', 'bqn', 'bqo', 'bqp', 'bqq', 'bqr', 'bqs', 'bqt', 'bqu', 'bqv', 'bqw', 'bqx', 'bqy', 'bqz', 'bra', 'brb', 'brc', 'brd', 'brf', 'brg', 'brh', 'bri', 'brj', 'brk', 'brl', 'brm', 'brn', 'bro', 'brp', 'brq', 'brr', 'brs', 'brt', 'bru', 'brv', 'brw', 'brx', 'bry', 'brz', 'bsa', 'bsb', 'bsc', 'bse', 'bsf', 'bsg', 'bsh', 'bsi', 'bsj', 'bsk', 'bsl', 'bsm', 'bsn', 'bso', 'bsp', 'bsq', 'bsr', 'bss', 'bst', 'bsu', 'bsv', 'bsw', 'bsx', 'bsy', 'bta', 'btb', 'btc', 'btd', 'bte', 'btf', 'btg', 'bth', 'bti', 'btj', 'btk', 'btl', 'btm', 'btn', 'bto', 'btp', 'btq', 'btr', 'bts', 'btt', 'btu', 'btv', 'btw', 'btx', 'bty', 'btz', 'bua', 'bub', 'buc', 'bud', 'bue', 'buf', 'bug', 'buh', 'bui', 'buj', 'buk', 'bum', 'bun', 'buo', 'bup', 'buq', 'bus', 'but', 'buu', 'buv', 'buw', 'bux', 'buy', 'buz', 'bva', 'bvb', 'bvc', 'bvd', 'bve', 'bvf', 'bvg', 'bvh', 'bvi', 'bvj', 'bvk', 'bvl', 'bvm', 'bvn', 'bvo', 'bvp', 'bvq', 'bvr', 'bvt', 'bvu', 'bvv', 'bvw', 'bvx', 'bvy', 'bvz', 'bwa', 'bwb', 'bwc', 'bwd', 'bwe', 'bwf', 'bwg', 'bwh', 'bwi', 'bwj', 'bwk', 'bwl', 'bwm', 'bwn', 'bwo', 'bwp', 'bwq', 'bwr', 'bws', 'bwt', 'bwu', 'bww', 'bwx', 'bwy', 'bwz', 'bxa', 'bxb', 'bxc', 'bxd', 'bxe', 'bxf', 'bxg', 'bxh', 'bxi', 'bxj', 'bxk', 'bxl', 'bxm', 'bxn', 'bxo', 'bxp', 'bxq', 'bxr', 'bxs', 'bxu', 'bxv', 'bxw', 'bxx', 'bxz', 'bya', 'byb', 'byc', 'byd', 'bye', 'byf', 'byg', 'byh', 'byi', 'byj', 'byk', 'byl', 'bym', 'byn', 'byo', 'byp', 'byq', 'byr', 'bys', 'byt', 'byv', 'byw', 'byx', 'byy', 'byz', 'bza', 'bzb', 'bzc', 'bzd', 'bze', 'bzf', 'bzg', 'bzh', 'bzi', 'bzj', 'bzk', 'bzl', 'bzm', 'bzn', 'bzo', 'bzp', 'bzq', 'bzr', 'bzs', 'bzt', 'bzu', 'bzv', 'bzw', 'bzx', 'bzy', 'bzz', 'caa', 'cab', 'cac', 'cad', 'cae', 'caf', 'cag', 'cah', 'cai', 'caj', 'cak', 'cal', 'cam', 'can', 'cao', 'cap', 'caq', 'car', 'cas', 'cau', 'cav', 'caw', 'cax', 'cay', 'caz', 'cba', 'cbb', 'cbc', 'cbd', 'cbe', 'cbg', 'cbh', 'cbi', 'cbj', 'cbk', 'cbl', 'cbn', 'cbo', 'cbq', 'cbr', 'cbs', 'cbt', 'cbu', 'cbv', 'cbw', 'cby', 'cca', 'ccc', 'ccd', 'cce', 'ccg', 'cch', 'ccj', 'ccl', 'ccm', 'ccn', 'cco', 'ccp', 'ccq', 'ccr', 'ccs', 'cda', 'cdc', 'cdd', 'cde', 'cdf', 'cdg', 'cdh', 'cdi', 'cdj', 'cdm', 'cdn', 'cdo', 'cdr', 'cds', 'cdy', 'cdz', 'cea', 'ceb', 'ceg', 'cek', 'cel', 'cen', 'cet', 'cfa', 'cfd', 'cfg', 'cfm', 'cga', 'cgc', 'cgg', 'cgk', 'chb', 'chc', 'chd', 'chf', 'chg', 'chh', 'chj', 'chk', 'chl', 'chm', 'chn', 'cho', 'chp', 'chq', 'chr', 'cht', 'chw', 'chx', 'chy', 'chz', 'cia', 'cib', 'cic', 'cid', 'cie', 'cih', 'cik', 'cim', 'cin', 'cip', 'cir', 'ciw', 'ciy', 'cja', 'cje', 'cjh', 'cji', 'cjk', 'cjm', 'cjn', 'cjo', 'cjp', 'cjr', 'cjs', 'cjv', 'cjy', 'cka', 'ckb', 'ckh', 'ckl', 'ckn', 'cko', 'ckq', 'ckr', 'cks', 'ckt', 'cku', 'ckv', 'ckx', 'cky', 'ckz', 'cla', 'clc', 'cld', 'cle', 'clh', 'cli', 'clj', 'clk', 'cll', 'clm', 'clo', 'clt', 'clu', 'clw', 'cly', 'cma', 'cmc', 'cme', 'cmg', 'cmi', 'cmk', 'cml', 'cmm', 'cmn', 'cmo', 'cmr', 'cms', 'cmt', 'cna', 'cnb', 'cnc', 'cng', 'cnh', 'cni', 'cnk', 'cnl', 'cno', 'cns', 'cnt', 'cnu', 'cnw', 'cnx', 'coa', 'cob', 'coc', 'cod', 'coe', 'cof', 'cog', 'coh', 'coj', 'cok', 'col', 'com', 'con', 'coo', 'cop', 'coq', 'cot', 'cou', 'cov', 'cow', 'cox', 'coy', 'coz', 'cpa', 'cpb', 'cpc', 'cpe', 'cpf', 'cpg', 'cpi', 'cpn', 'cpo', 'cpp', 'cps', 'cpu', 'cpx', 'cpy', 'cqd', 'cqu', 'cra', 'crb', 'crc', 'crd', 'crf', 'crg', 'crh', 'cri', 'crj', 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'klh', 'kli', 'klj', 'klk', 'kll', 'klm', 'kln', 'klo', 'klp', 'klq', 'klr', 'kls', 'klt', 'klu', 'klv', 'klw', 'klx', 'kly', 'klz', 'kma', 'kmb', 'kmc', 'kmd', 'kme', 'kmf', 'kmg', 'kmh', 'kmi', 'kmj', 'kmk', 'kml', 'kmm', 'kmn', 'kmo', 'kmp', 'kmq', 'kmr', 'kms', 'kmt', 'kmu', 'kmv', 'kmw', 'kmx', 'kmy', 'kmz', 'kna', 'knb', 'knc', 'knd', 'kne', 'knf', 'kng', 'kni', 'knj', 'knk', 'knl', 'knm', 'knn', 'kno', 'knp', 'knq', 'knr', 'kns', 'knt', 'knu', 'knv', 'knw', 'knx', 'kny', 'knz', 'koa', 'koc', 'kod', 'koe', 'kof', 'kog', 'koh', 'koi', 'koj', 'kok', 'kol', 'koo', 'kop', 'koq', 'kos', 'kot', 'kou', 'kov', 'kow', 'kox', 'koy', 'koz', 'kpa', 'kpb', 'kpc', 'kpd', 'kpe', 'kpf', 'kpg', 'kph', 'kpi', 'kpj', 'kpk', 'kpl', 'kpm', 'kpn', 'kpo', 'kpp', 'kpq', 'kpr', 'kps', 'kpt', 'kpu', 'kpv', 'kpw', 'kpx', 'kpy', 'kpz', 'kqa', 'kqb', 'kqc', 'kqd', 'kqe', 'kqf', 'kqg', 'kqh', 'kqi', 'kqj', 'kqk', 'kql', 'kqm', 'kqn', 'kqo', 'kqp', 'kqq', 'kqr', 'kqs', 'kqt', 'kqu', 'kqv', 'kqw', 'kqx', 'kqy', 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'kwq', 'kwr', 'kws', 'kwt', 'kwu', 'kwv', 'kww', 'kwx', 'kwy', 'kwz', 'kxa', 'kxb', 'kxc', 'kxd', 'kxe', 'kxf', 'kxh', 'kxi', 'kxj', 'kxk', 'kxl', 'kxm', 'kxn', 'kxo', 'kxp', 'kxq', 'kxr', 'kxs', 'kxt', 'kxu', 'kxv', 'kxw', 'kxx', 'kxy', 'kxz', 'kya', 'kyb', 'kyc', 'kyd', 'kye', 'kyf', 'kyg', 'kyh', 'kyi', 'kyj', 'kyk', 'kyl', 'kym', 'kyn', 'kyo', 'kyp', 'kyq', 'kyr', 'kys', 'kyt', 'kyu', 'kyv', 'kyw', 'kyx', 'kyy', 'kyz', 'kza', 'kzb', 'kzc', 'kzd', 'kze', 'kzf', 'kzg', 'kzh', 'kzi', 'kzj', 'kzk', 'kzl', 'kzm', 'kzn', 'kzo', 'kzp', 'kzq', 'kzr', 'kzs', 'kzt', 'kzu', 'kzv', 'kzw', 'kzx', 'kzy', 'kzz', 'laa', 'lab', 'lac', 'lad', 'lae', 'laf', 'lag', 'lah', 'lai', 'laj', 'lak', 'lal', 'lam', 'lan', 'lap', 'laq', 'lar', 'las', 'lau', 'law', 'lax', 'lay', 'laz', 'lba', 'lbb', 'lbc', 'lbe', 'lbf', 'lbg', 'lbi', 'lbj', 'lbk', 'lbl', 'lbm', 'lbn', 'lbo', 'lbq', 'lbr', 'lbs', 'lbt', 'lbu', 'lbv', 'lbw', 'lbx', 'lby', 'lbz', 'lcc', 'lcd', 'lce', 'lcf', 'lch', 'lcl', 'lcm', 'lcp', 'lcq', 'lcs', 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'lmk', 'lml', 'lmm', 'lmn', 'lmo', 'lmp', 'lmq', 'lmr', 'lmu', 'lmv', 'lmw', 'lmx', 'lmy', 'lmz', 'lna', 'lnb', 'lnd', 'lng', 'lnh', 'lni', 'lnj', 'lnl', 'lnm', 'lnn', 'lno', 'lns', 'lnu', 'lnw', 'lnz', 'loa', 'lob', 'loc', 'loe', 'lof', 'log', 'loh', 'loi', 'loj', 'lok', 'lol', 'lom', 'lon', 'loo', 'lop', 'loq', 'lor', 'los', 'lot', 'lou', 'lov', 'low', 'lox', 'loy', 'loz', 'lpa', 'lpe', 'lpn', 'lpo', 'lpx', 'lra', 'lrc', 'lre', 'lrg', 'lri', 'lrk', 'lrl', 'lrm', 'lrn', 'lro', 'lrr', 'lrt', 'lrv', 'lrz', 'lsa', 'lsd', 'lse', 'lsg', 'lsh', 'lsi', 'lsl', 'lsm', 'lso', 'lsp', 'lsr', 'lss', 'lst', 'lsy', 'ltc', 'ltg', 'lth', 'lti', 'ltn', 'lto', 'lts', 'ltu', 'lua', 'luc', 'lud', 'lue', 'luf', 'lui', 'luj', 'luk', 'lul', 'lum', 'lun', 'luo', 'lup', 'luq', 'lur', 'lus', 'lut', 'luu', 'luv', 'luw', 'luy', 'luz', 'lva', 'lvk', 'lvs', 'lvu', 'lwa', 'lwe', 'lwg', 'lwh', 'lwl', 'lwm', 'lwo', 'lwt', 'lwu', 'lww', 'lya', 'lyg', 'lyn', 'lzh', 'lzl', 'lzn', 'lzz', 'maa', 'mab', 'mad', 'mae', 'maf', 'mag', 'mai', 'maj', 'mak', 'mam', 'man', 'map', 'maq', 'mas', 'mat', 'mau', 'mav', 'maw', 'max', 'maz', 'mba', 'mbb', 'mbc', 'mbd', 'mbe', 'mbf', 'mbh', 'mbi', 'mbj', 'mbk', 'mbl', 'mbm', 'mbn', 'mbo', 'mbp', 'mbq', 'mbr', 'mbs', 'mbt', 'mbu', 'mbv', 'mbw', 'mbx', 'mby', 'mbz', 'mca', 'mcb', 'mcc', 'mcd', 'mce', 'mcf', 'mcg', 'mch', 'mci', 'mcj', 'mck', 'mcl', 'mcm', 'mcn', 'mco', 'mcp', 'mcq', 'mcr', 'mcs', 'mct', 'mcu', 'mcv', 'mcw', 'mcx', 'mcy', 'mcz', 'mda', 'mdb', 'mdc', 'mdd', 'mde', 'mdf', 'mdg', 'mdh', 'mdi', 'mdj', 'mdk', 'mdl', 'mdm', 'mdn', 'mdp', 'mdq', 'mdr', 'mds', 'mdt', 'mdu', 'mdv', 'mdw', 'mdx', 'mdy', 'mdz', 'mea', 'meb', 'mec', 'med', 'mee', 'mef', 'meg', 'meh', 'mei', 'mej', 'mek', 'mel', 'mem', 'men', 'meo', 'mep', 'meq', 'mer', 'mes', 'met', 'meu', 'mev', 'mew', 'mey', 'mez', 'mfa', 'mfb', 'mfc', 'mfd', 'mfe', 'mff', 'mfg', 'mfh', 'mfi', 'mfj', 'mfk', 'mfl', 'mfm', 'mfn', 'mfo', 'mfp', 'mfq', 'mfr', 'mfs', 'mft', 'mfu', 'mfv', 'mfw', 'mfx', 'mfy', 'mfz', 'mga', 'mgb', 'mgc', 'mgd', 'mge', 'mgf', 'mgg', 'mgh', 'mgi', 'mgj', 'mgk', 'mgl', 'mgm', 'mgn', 'mgo', 'mgp', 'mgq', 'mgr', 'mgs', 'mgt', 'mgu', 'mgv', 'mgw', 'mgx', 'mgy', 'mgz', 'mha', 'mhb', 'mhc', 'mhd', 'mhe', 'mhf', 'mhg', 'mhh', 'mhi', 'mhj', 'mhk', 'mhl', 'mhm', 'mhn', 'mho', 'mhp', 'mhq', 'mhr', 'mhs', 'mht', 'mhu', 'mhw', 'mhx', 'mhy', 'mhz', 'mia', 'mib', 'mic', 'mid', 'mie', 'mif', 'mig', 'mih', 'mii', 'mij', 'mik', 'mil', 'mim', 'min', 'mio', 'mip', 'miq', 'mir', 'mis', 'mit', 'miu', 'miw', 'mix', 'miy', 'miz', 'mja', 'mjb', 'mjc', 'mjd', 'mje', 'mjg', 'mjh', 'mji', 'mjj', 'mjk', 'mjl', 'mjm', 'mjn', 'mjo', 'mjp', 'mjq', 'mjr', 'mjs', 'mjt', 'mju', 'mjv', 'mjw', 'mjx', 'mjy', 'mjz', 'mka', 'mkb', 'mkc', 'mke', 'mkf', 'mkg', 'mkh', 'mki', 'mkj', 'mkk', 'mkl', 'mkm', 'mkn', 'mko', 'mkp', 'mkq', 'mkr', 'mks', 'mkt', 'mku', 'mkv', 'mkw', 'mkx', 'mky', 'mkz', 'mla', 'mlb', 'mlc', 'mld', 'mle', 'mlf', 'mlh', 'mli', 'mlj', 'mlk', 'mll', 'mlm', 'mln', 'mlo', 'mlp', 'mlq', 'mlr', 'mls', 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'tbl', 'tbm', 'tbn', 'tbo', 'tbp', 'tbq', 'tbr', 'tbs', 'tbt', 'tbu', 'tbv', 'tbw', 'tbx', 'tby', 'tbz', 'tca', 'tcb', 'tcc', 'tcd', 'tce', 'tcf', 'tcg', 'tch', 'tci', 'tck', 'tcl', 'tcm', 'tcn', 'tco', 'tcp', 'tcq', 'tcs', 'tct', 'tcu', 'tcw', 'tcx', 'tcy', 'tcz', 'tda', 'tdb', 'tdc', 'tdd', 'tde', 'tdf', 'tdg', 'tdh', 'tdi', 'tdj', 'tdk', 'tdl', 'tdm', 'tdn', 'tdo', 'tdq', 'tdr', 'tds', 'tdt', 'tdu', 'tdv', 'tdx', 'tdy', 'tea', 'teb', 'tec', 'ted', 'tee', 'tef', 'teg', 'teh', 'tei', 'tek', 'tem', 'ten', 'teo', 'tep', 'teq', 'ter', 'tes', 'tet', 'teu', 'tev', 'tew', 'tex', 'tey', 'tfi', 'tfn', 'tfo', 'tfr', 'tft', 'tga', 'tgb', 'tgc', 'tgd', 'tge', 'tgf', 'tgg', 'tgh', 'tgi', 'tgj', 'tgn', 'tgo', 'tgp', 'tgq', 'tgr', 'tgs', 'tgt', 'tgu', 'tgv', 'tgw', 'tgx', 'tgy', 'tgz', 'thc', 'thd', 'the', 'thf', 'thh', 'thi', 'thk', 'thl', 'thm', 'thn', 'thp', 'thq', 'thr', 'ths', 'tht', 'thu', 'thv', 'thw', 'thx', 'thy', 'thz', 'tia', 'tic', 'tid', 'tie', 'tif', 'tig', 'tih', 'tii', 'tij', 'tik', 'til', 'tim', 'tin', 'tio', 'tip', 'tiq', 'tis', 'tit', 'tiu', 'tiv', 'tiw', 'tix', 'tiy', 'tiz', 'tja', 'tjg', 'tji', 'tjl', 'tjm', 'tjn', 'tjo', 'tjs', 'tju', 'tjw', 'tka', 'tkb', 'tkd', 'tke', 'tkf', 'tkg', 'tkk', 'tkl', 'tkm', 'tkn', 'tkp', 'tkq', 'tkr', 'tks', 'tkt', 'tku', 'tkv', 'tkw', 'tkx', 'tkz', 'tla', 'tlb', 'tlc', 'tld', 'tlf', 'tlg', 'tlh', 'tli', 'tlj', 'tlk', 'tll', 'tlm', 'tln', 'tlo', 'tlp', 'tlq', 'tlr', 'tls', 'tlt', 'tlu', 'tlv', 'tlw', 'tlx', 'tly', 'tma', 'tmb', 'tmc', 'tmd', 'tme', 'tmf', 'tmg', 'tmh', 'tmi', 'tmj', 'tmk', 'tml', 'tmm', 'tmn', 'tmo', 'tmp', 'tmq', 'tmr', 'tms', 'tmt', 'tmu', 'tmv', 'tmw', 'tmy', 'tmz', 'tna', 'tnb', 'tnc', 'tnd', 'tne', 'tnf', 'tng', 'tnh', 'tni', 'tnk', 'tnl', 'tnm', 'tnn', 'tno', 'tnp', 'tnq', 'tnr', 'tns', 'tnt', 'tnu', 'tnv', 'tnw', 'tnx', 'tny', 'tnz', 'tob', 'toc', 'tod', 'toe', 'tof', 'tog', 'toh', 'toi', 'toj', 'tol', 'tom', 'too', 'top', 'toq', 'tor', 'tos', 'tou', 'tov', 'tow', 'tox', 'toy', 'toz', 'tpa', 'tpc', 'tpe', 'tpf', 'tpg', 'tpi', 'tpj', 'tpk', 'tpl', 'tpm', 'tpn', 'tpo', 'tpp', 'tpq', 'tpr', 'tpt', 'tpu', 'tpv', 'tpw', 'tpx', 'tpy', 'tpz', 'tqb', 'tql', 'tqm', 'tqn', 'tqo', 'tqp', 'tqq', 'tqr', 'tqt', 'tqu', 'tqw', 'tra', 'trb', 'trc', 'trd', 'tre', 'trf', 'trg', 'trh', 'tri', 'trj', 'trk', 'trl', 'trm', 'trn', 'tro', 'trp', 'trq', 'trr', 'trs', 'trt', 'tru', 'trv', 'trw', 'trx', 'try', 'trz', 'tsa', 'tsb', 'tsc', 'tsd', 'tse', 'tsf', 'tsg', 'tsh', 'tsi', 'tsj', 'tsk', 'tsl', 'tsm', 'tsp', 'tsq', 'tsr', 'tss', 'tst', 'tsu', 'tsv', 'tsw', 'tsx', 'tsy', 'tsz', 'tta', 'ttb', 'ttc', 'ttd', 'tte', 'ttf', 'ttg', 'tth', 'tti', 'ttj', 'ttk', 'ttl', 'ttm', 'ttn', 'tto', 'ttp', 'ttq', 'ttr', 'tts', 'ttt', 'ttu', 'ttv', 'ttw', 'tty', 'ttz', 'tua', 'tub', 'tuc', 'tud', 'tue', 'tuf', 'tug', 'tuh', 'tui', 'tuj', 'tul', 'tum', 'tun', 'tuo', 'tup', 'tuq', 'tus', 'tut', 'tuu', 'tuv', 'tuw', 'tux', 'tuy', 'tuz', 'tva', 'tvd', 'tve', 'tvk', 'tvl', 'tvm', 'tvn', 'tvo', 'tvs', 'tvt', 'tvu', 'tvw', 'tvy', 'twa', 'twb', 'twc', 'twd', 'twe', 'twf', 'twg', 'twh', 'twl', 'twm', 'twn', 'two', 'twp', 'twq', 'twr', 'twt', 'twu', 'tww', 'twx', 'twy', 'txa', 'txb', 'txc', 'txe', 'txg', 'txh', 'txi', 'txj', 'txm', 'txn', 'txo', 'txq', 'txr', 'txs', 'txt', 'txu', 'txx', 'txy', 'tya', 'tye', 'tyh', 'tyi', 'tyj', 'tyl', 'tyn', 'typ', 'tyr', 'tys', 'tyt', 'tyu', 'tyv', 'tyx', 'tyz', 'tza', 'tzh', 'tzj', 'tzl', 'tzm', 'tzn', 'tzo', 'tzx', 'uam', 'uan', 'uar', 'uba', 'ubi', 'ubl', 'ubr', 'ubu', 'uby', 'uda', 'ude', 'udg', 'udi', 'udj', 'udl', 'udm', 'udu', 'ues', 'ufi', 'uga', 'ugb', 'uge', 'ugn', 'ugo', 'ugy', 'uha', 'uhn', 'uis', 'uiv', 'uji', 'uka', 'ukg', 'ukh', 'ukk', 'ukl', 'ukp', 'ukq', 'uks', 'uku', 'ukw', 'uky', 'ula', 'ulb', 'ulc', 'ule', 'ulf', 'uli', 'ulk', 'ull', 'ulm', 'uln', 'ulu', 'ulw', 'uma', 'umb', 'umc', 'umd', 'umg', 'umi', 'umm', 'umn', 'umo', 'ump', 'umr', 'ums', 'umu', 'una', 'und', 'une', 'ung', 'unk', 'unm', 'unn', 'unp', 'unr', 'unu', 'unx', 'unz', 'uok', 'upi', 'upv', 'ura', 'urb', 'urc', 'ure', 'urf', 'urg', 'urh', 'uri', 'urj', 'urk', 'url', 'urm', 'urn', 'uro', 'urp', 'urr', 'urt', 'uru', 'urv', 'urw', 'urx', 'ury', 'urz', 'usa', 'ush', 'usi', 'usk', 'usp', 'usu', 'uta', 'ute', 'utp', 'utr', 'utu', 'uum', 'uun', 'uur', 'uuu', 'uve', 'uvh', 'uvl', 'uwa', 'uya', 'uzn', 'uzs', 'vaa', 'vae', 'vaf', 'vag', 'vah', 'vai', 'vaj', 'val', 'vam', 'van', 'vao', 'vap', 'var', 'vas', 'vau', 'vav', 'vay', 'vbb', 'vbk', 'vec', 'ved', 'vel', 'vem', 'veo', 'vep', 'ver', 'vgr', 'vgt', 'vic', 'vid', 'vif', 'vig', 'vil', 'vin', 'vis', 'vit', 'viv', 'vka', 'vki', 'vkj', 'vkk', 'vkl', 'vkm', 'vko', 'vkp', 'vkt', 'vku', 'vlp', 'vls', 'vma', 'vmb', 'vmc', 'vmd', 'vme', 'vmf', 'vmg', 'vmh', 'vmi', 'vmj', 'vmk', 'vml', 'vmm', 'vmp', 'vmq', 'vmr', 'vms', 'vmu', 'vmv', 'vmw', 'vmx', 'vmy', 'vmz', 'vnk', 'vnm', 'vnp', 'vor', 'vot', 'vra', 'vro', 'vrs', 'vrt', 'vsi', 'vsl', 'vsv', 'vto', 'vum', 'vun', 'vut', 'vwa', 'waa', 'wab', 'wac', 'wad', 'wae', 'waf', 'wag', 'wah', 'wai', 'waj', 'wak', 'wal', 'wam', 'wan', 'wao', 'wap', 'waq', 'war', 'was', 'wat', 'wau', 'wav', 'waw', 'wax', 'way', 'waz', 'wba', 'wbb', 'wbe', 'wbf', 'wbh', 'wbi', 'wbj', 'wbk', 'wbl', 'wbm', 'wbp', 'wbq', 'wbr', 'wbs', 'wbt', 'wbv', 'wbw', 'wca', 'wci', 'wdd', 'wdg', 'wdj', 'wdk', 'wdu', 'wdy', 'wea', 'wec', 'wed', 'weg', 'weh', 'wei', 'wem', 'wen', 'weo', 'wep', 'wer', 'wes', 'wet', 'weu', 'wew', 'wfg', 'wga', 'wgb', 'wgg', 'wgi', 'wgo', 'wgu', 'wgw', 'wgy', 'wha', 'whg', 'whk', 'whu', 'wib', 'wic', 'wie', 'wif', 'wig', 'wih', 'wii', 'wij', 'wik', 'wil', 'wim', 'win', 'wir', 'wit', 'wiu', 'wiv', 'wiw', 'wiy', 'wja', 'wji', 'wka', 'wkb', 'wkd', 'wkl', 'wku', 'wkw', 'wky', 'wla', 'wlc', 'wle', 'wlg', 'wli', 'wlk', 'wll', 'wlm', 'wlo', 'wlr', 'wls', 'wlu', 'wlv', 'wlw', 'wlx', 'wly', 'wma', 'wmb', 'wmc', 'wmd', 'wme', 'wmh', 'wmi', 'wmm', 'wmn', 'wmo', 'wms', 'wmt', 'wmw', 'wmx', 'wnb', 'wnc', 'wnd', 'wne', 'wng', 'wni', 'wnk', 'wnm', 'wnn', 'wno', 'wnp', 'wnu', 'wnw', 'wny', 'woa', 'wob', 'woc', 'wod', 'woe', 'wof', 'wog', 'woi', 'wok', 'wom', 'won', 'woo', 'wor', 'wos', 'wow', 'woy', 'wpc', 'wra', 'wrb', 'wrd', 'wrg', 'wrh', 'wri', 'wrk', 'wrl', 'wrm', 'wrn', 'wro', 'wrp', 'wrr', 'wrs', 'wru', 'wrv', 'wrw', 'wrx', 'wry', 'wrz', 'wsa', 'wsg', 'wsi', 'wsk', 'wsr', 'wss', 'wsu', 'wsv', 'wtf', 'wth', 'wti', 'wtk', 'wtm', 'wtw', 'wua', 'wub', 'wud', 'wuh', 'wul', 'wum', 'wun', 'wur', 'wut', 'wuu', 'wuv', 'wux', 'wuy', 'wwa', 'wwb', 'wwo', 'wwr', 'www', 'wxa', 'wxw', 'wya', 'wyb', 'wyi', 'wym', 'wyr', 'wyy', 'xaa', 'xab', 'xac', 'xad', 'xae', 'xag', 'xai', 'xaj', 'xak', 'xal', 'xam', 'xan', 'xao', 'xap', 'xaq', 'xar', 'xas', 'xat', 'xau', 'xav', 'xaw', 'xay', 'xba', 'xbb', 'xbc', 'xbd', 'xbe', 'xbg', 'xbi', 'xbj', 'xbm', 'xbn', 'xbo', 'xbp', 'xbr', 'xbw', 'xbx', 'xby', 'xcb', 'xcc', 'xce', 'xcg', 'xch', 'xcl', 'xcm', 'xcn', 'xco', 'xcr', 'xct', 'xcu', 'xcv', 'xcw', 'xcy', 'xda', 'xdc', 'xdk', 'xdm', 'xdo', 'xdy', 'xeb', 'xed', 'xeg', 'xel', 'xem', 'xep', 'xer', 'xes', 'xet', 'xeu', 'xfa', 'xga', 'xgb', 'xgd', 'xgf', 'xgg', 'xgi', 'xgl', 'xgm', 'xgn', 'xgr', 'xgu', 'xgw', 'xha', 'xhc', 'xhd', 'xhe', 'xhr', 'xht', 'xhu', 'xhv', 'xia', 'xib', 'xii', 'xil', 'xin', 'xip', 'xir', 'xis', 'xiv', 'xiy', 'xjb', 'xjt', 'xka', 'xkb', 'xkc', 'xkd', 'xke', 'xkf', 'xkg', 'xkh', 'xki', 'xkj', 'xkk', 'xkl', 'xkn', 'xko', 'xkp', 'xkq', 'xkr', 'xks', 'xkt', 'xku', 'xkv', 'xkw', 'xkx', 'xky', 'xkz', 'xla', 'xlb', 'xlc', 'xld', 'xle', 'xlg', 'xli', 'xln', 'xlo', 'xlp', 'xls', 'xlu', 'xly', 'xma', 'xmb', 'xmc', 'xmd', 'xme', 'xmf', 'xmg', 'xmh', 'xmj', 'xmk', 'xml', 'xmm', 'xmn', 'xmo', 'xmp', 'xmq', 'xmr', 'xms', 'xmt', 'xmu', 'xmv', 'xmw', 'xmx', 'xmy', 'xmz', 'xna', 'xnb', 'xnd', 'xng', 'xnh', 'xni', 'xnk', 'xnn', 'xno', 'xnr', 'xns', 'xnt', 'xnu', 'xny', 'xnz', 'xoc', 'xod', 'xog', 'xoi', 'xok', 'xom', 'xon', 'xoo', 'xop', 'xor', 'xow', 'xpa', 'xpc', 'xpe', 'xpg', 'xpi', 'xpj', 'xpk', 'xpm', 'xpn', 'xpo', 'xpp', 'xpq', 'xpr', 'xps', 'xpt', 'xpu', 'xpy', 'xqa', 'xqt', 'xra', 'xrb', 'xrd', 'xre', 'xrg', 'xri', 'xrm', 'xrn', 'xrq', 'xrr', 'xrt', 'xru', 'xrw', 'xsa', 'xsb', 'xsc', 'xsd', 'xse', 'xsh', 'xsi', 'xsj', 'xsl', 'xsm', 'xsn', 'xso', 'xsp', 'xsq', 'xsr', 'xss', 'xsu', 'xsv', 'xsy', 'xta', 'xtb', 'xtc', 'xtd', 'xte', 'xtg', 'xth', 'xti', 'xtj', 'xtl', 'xtm', 'xtn', 'xto', 'xtp', 'xtq', 'xtr', 'xts', 'xtt', 'xtu', 'xtv', 'xtw', 'xty', 'xtz', 'xua', 'xub', 'xud', 'xug', 'xuj', 'xul', 'xum', 'xun', 'xuo', 'xup', 'xur', 'xut', 'xuu', 'xve', 'xvi', 'xvn', 'xvo', 'xvs', 'xwa', 'xwc', 'xwd', 'xwe', 'xwg', 'xwj', 'xwk', 'xwl', 'xwo', 'xwr', 'xwt', 'xww', 'xxb', 'xxk', 'xxm', 'xxr', 'xxt', 'xya', 'xyb', 'xyj', 'xyk', 'xyl', 'xyt', 'xyy', 'xzh', 'xzm', 'xzp', 'yaa', 'yab', 'yac', 'yad', 'yae', 'yaf', 'yag', 'yah', 'yai', 'yaj', 'yak', 'yal', 'yam', 'yan', 'yao', 'yap', 'yaq', 'yar', 'yas', 'yat', 'yau', 'yav', 'yaw', 'yax', 'yay', 'yaz', 'yba', 'ybb', 'ybd', 'ybe', 'ybh', 'ybi', 'ybj', 'ybk', 'ybl', 'ybm', 'ybn', 'ybo', 'ybx', 'yby', 'ych', 'ycl', 'ycn', 'ycp', 'yda', 'ydd', 'yde', 'ydg', 'ydk', 'yds', 'yea', 'yec', 'yee', 'yei', 'yej', 'yel', 'yen', 'yer', 'yes', 'yet', 'yeu', 'yev', 'yey', 'yga', 'ygi', 'ygl', 'ygm', 'ygp', 'ygr', 'ygs', 'ygu', 'ygw', 'yha', 'yhd', 'yhl', 'yhs', 'yia', 'yif', 'yig', 'yih', 'yii', 'yij', 'yik', 'yil', 'yim', 'yin', 'yip', 'yiq', 'yir', 'yis', 'yit', 'yiu', 'yiv', 'yix', 'yiy', 'yiz', 'yka', 'ykg', 'yki', 'ykk', 'ykl', 'ykm', 'ykn', 'yko', 'ykr', 'ykt', 'yku', 'yky', 'yla', 'ylb', 'yle', 'ylg', 'yli', 'yll', 'ylm', 'yln', 'ylo', 'ylr', 'ylu', 'yly', 'yma', 'ymb', 'ymc', 'ymd', 'yme', 'ymg', 'ymh', 'ymi', 'ymk', 'yml', 'ymm', 'ymn', 'ymo', 'ymp', 'ymq', 'ymr', 'yms', 'ymt', 'ymx', 'ymz', 'yna', 'ynd', 'yne', 'yng', 'ynh', 'ynk', 'ynl', 'ynn', 'yno', 'ynq', 'yns', 'ynu', 'yob', 'yog', 'yoi', 'yok', 'yol', 'yom', 'yon', 'yos', 'yot', 'yox', 'yoy', 'ypa', 'ypb', 'ypg', 'yph', 'ypk', 'ypm', 'ypn', 'ypo', 'ypp', 'ypz', 'yra', 'yrb', 'yre', 'yri', 'yrk', 'yrl', 'yrm', 'yrn', 'yro', 'yrs', 'yrw', 'yry', 'ysc', 'ysd', 'ysg', 'ysl', 'ysn', 'yso', 'ysp', 'ysr', 'yss', 'ysy', 'yta', 'ytl', 'ytp', 'ytw', 'yty', 'yua', 'yub', 'yuc', 'yud', 'yue', 'yuf', 'yug', 'yui', 'yuj', 'yuk', 'yul', 'yum', 'yun', 'yup', 'yuq', 'yur', 'yut', 'yuu', 'yuw', 'yux', 'yuy', 'yuz', 'yva', 'yvt', 'ywa', 'ywg', 'ywl', 'ywn', 'ywq', 'ywr', 'ywt', 'ywu', 'yww', 'yxa', 'yxg', 'yxl', 'yxm', 'yxu', 'yxy', 'yyr', 'yyu', 'yyz', 'yzg', 'yzk', 'zaa', 'zab', 'zac', 'zad', 'zae', 'zaf', 'zag', 'zah', 'zai', 'zaj', 'zak', 'zal', 'zam', 'zao', 'zap', 'zaq', 'zar', 'zas', 'zat', 'zau', 'zav', 'zaw', 'zax', 'zay', 'zaz', 'zbc', 'zbe', 'zbl', 'zbt', 'zbw', 'zca', 'zch', 'zdj', 'zea', 'zeg', 'zeh', 'zen', 'zga', 'zgb', 'zgh', 'zgm', 'zgn', 'zgr', 'zhb', 'zhd', 'zhi', 'zhn', 'zhw', 'zhx', 'zia', 'zib', 'zik', 'zil', 'zim', 'zin', 'zir', 'ziw', 'ziz', 'zka', 'zkb', 'zkd', 'zkg', 'zkh', 'zkk', 'zkn', 'zko', 'zkp', 'zkr', 'zkt', 'zku', 'zkv', 'zkz', 'zle', 'zlj', 'zlm', 'zln', 'zlq', 'zls', 'zlw', 'zma', 'zmb', 'zmc', 'zmd', 'zme', 'zmf', 'zmg', 'zmh', 'zmi', 'zmj', 'zmk', 'zml', 'zmm', 'zmn', 'zmo', 'zmp', 'zmq', 'zmr', 'zms', 'zmt', 'zmu', 'zmv', 'zmw', 'zmx', 'zmy', 'zmz', 'zna', 'znd', 'zne', 'zng', 'znk', 'zns', 'zoc', 'zoh', 'zom', 'zoo', 'zoq', 'zor', 'zos', 'zpa', 'zpb', 'zpc', 'zpd', 'zpe', 'zpf', 'zpg', 'zph', 'zpi', 'zpj', 'zpk', 'zpl', 'zpm', 'zpn', 'zpo', 'zpp', 'zpq', 'zpr', 'zps', 'zpt', 'zpu', 'zpv', 'zpw', 'zpx', 'zpy', 'zpz', 'zqe', 'zra', 'zrg', 'zrn', 'zro', 'zrp', 'zrs', 'zsa', 'zsk', 'zsl', 'zsm', 'zsr', 'zsu', 'zte', 'ztg', 'ztl', 'ztm', 'ztn', 'ztp', 'ztq', 'zts', 'ztt', 'ztu', 'ztx', 'zty', 'zua', 'zuh', 'zum', 'zun', 'zuy', 'zwa', 'zxx', 'zyb', 'zyg', 'zyj', 'zyn', 'zyp', 'zza', 'zzj' ];
axe.utils.validLangs = function() {
'use strict';
return langs;
};
return commons;
}()
});
})(typeof window === 'object' ? window : this);
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