sample for https://github.com/Microsoft/TypeScript/pull/3102

README.md

sample for pull request

$ node ~/work/TypeScript/built/local/tsc.js --project ./
$ echo $?
0
$ cat index.js
var str = "hello!";
console.log(str);
$ node ~/work/TypeScript/built/local/tsc.js --project ./tsconfig-es6.json
$ echo $?
0
$ cat index.js
let str = "hello!";
console.log(str);

BTW. in #681954bc59a58da949de42272333b3b33f72bce9

$ tsc -v
message TS6029: Version 1.5.0-beta
$ tsc --project ./not-exists/
error TS6050: Unable to open file 'not-exists/tsconfig.json'.
$ node ~/work/TypeScript/bin/tsc.js --project ./not-exists/
error TS5014: Failed to parse file 'not-exists/tsconfig.json': Unexpected token u.
$ node ~/work/TypeScript/built/local/tsc.js --project ./not-exists/
error TS6050: Unable to open file 'not-exists'.

index.ts

let str = "hello!";
console.log(str);

tsconfig-es6.json

{
    "compilerOptions": {
        "target": "es6"
    },
    "files": [
        "index.ts"
    ]
}

tsconfig.json

{
    "compilerOptions": {
        "target": "es5"
    },
    "files": [
        "index.ts"
    ]
}