tsconfig.json

{
  "compilerOptions": {
    "target": "es5",
    "module": "commonjs",
    "lib": [
      "es5",
      "es6",
      "dom",
      "es2015.core",
      "es2015.collection",
      "es2015.generator",
      "es2015.iterable",
      "es2015.promise",
      "es2015.proxy",
      "es2015.reflect",
      "es2015.symbol",
      "es2015.symbol.wellknown",
      "esnext.asynciterable"
    ],
    "declaration": true,
    "sourceMap": true,
    "outDir": "./dist",
    "strict": true,
    "resolveJsonModule": true,
    "noImplicitAny": true,
    "strictNullChecks": true,
    "strictFunctionTypes": true,
    "strictPropertyInitialization": true,
    "noImplicitThis": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "rootDir": "./src"
  },
  "exclude": [
    "node_modules",
    "dist",
    "test"
  ]
}