tsconfig.json

{
  "compilerOptions": {
    "target": "es6",
    "module": "commonjs",
    "moduleResolution": "node",
    "outDir": "./dist",
    "sourceMap": true,
    "lib": ["es6"],
    "allowSyntheticDefaultImports": false,
    "allowUnreachableCode": false,
    "allowUnusedLabels": false,
    "declaration": true,
    "forceConsistentCasingInFileNames": true,
    "noFallthroughCasesInSwitch": true,
    "noEmitOnError": true,
    "noImplicitReturns": true,
    "noImplicitAny": true,
    "strictNullChecks": true,
    "alwaysStrict": true,
    "noUnusedLocals": true
  },
  "compileOnSave": true,
  "include": ["src/**/*"]
}