tsconfig.json

{
  "include": [
    "src/**/*.ts"
  ],
  "compilerOptions": {
    "allowJs": false,
    "allowUnreachableCode": false,
    "allowUnusedLabels": false,
    "noEmitOnError": true,
    "noImplicitAny": true,
    "strictNullChecks": true,
    "noImplicitReturns": true,
    "noUnusedLocals": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitThis": true,
    "outDir": "dist",
    "target": "es5",
    "moduleResolution": "node",
    "declaration": true,
    "sourceMap": true,
    "resolveJsonModule": true
  }
}