tsconfig.json for node.js

tsconfig.json

{
    "files": [
        "src/main.ts"
    ],
    "compilerOptions": {
        "inlineSourceMap": true,
        "alwaysStrict": true,
        "noImplicitAny": true,
        "strictNullChecks": true,
        "strictFunctionTypes": true,
        "noImplicitThis": true,
        "noUnusedLocals": true,
        "target": "es6",
        "module": "commonjs",
        "outDir": "lib",
        "pretty": false
    }
}

npm install --save-dev @types/node source-map-support
require('source-map-support').install();
import 'source-map-support/register'

npm install --save-dev mocha chai @types/chai ts-node typescript

  "scripts": {
    "test": "mocha test/ --compilers ts:ts-node/register --recursive"
  },