VSCode Mocha TypeScript debug launch configuration (place in '<project>/.vscode/launch.json')

launch.json

{
  "version": "0.2.0",
  "configurations": [
    {
      "name": "Current TS File",
      "type": "node",
      "request": "launch",
      "args": ["${file}"],
      "runtimeArgs": ["--nolazy", "-r", "ts-node/register"],
      "sourceMaps": true,
      "cwd": "${workspaceRoot}",
      "protocol": "inspector"
    },
    {
      "type": "node",
      "request": "launch",
      "name": "Mocha Tests",
      "program": "${workspaceRoot}/node_modules/.bin/_mocha",
      "args": [
        "--require",
        "ts-node/register",
        "-u",
        "tdd",
        "--timeout",
        "999999",
        "--colors",
        "--recursive",
        "${workspaceFolder}/**/*.spec.ts"
      ],
      "internalConsoleOptions": "openOnSessionStart"
    },
    {
      "name": "Current TS Mocha File",
      "type": "node",
      "request": "launch",
      "program": "${workspaceRoot}/node_modules/.bin/_mocha",
      "args": ["-r", "ts-node/register", "${file}"],
      "cwd": "${workspaceRoot}",
      "protocol": "inspector"
    }
  ]
}