tsconfig.json

{
  "compilerOptions": {
    "baseUrl": ".",
    "outDir": "dist",
    "target": "es2015",
    "lib": [
      "es2016"
    ],
    "newLine": "LF",
    "module": "commonjs",
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "strict": true,
    "strictNullChecks": false,
    "sourceMap": true,
    "skipLibCheck": true,
    "importHelpers": true,
    "downlevelIteration": true,
    "esModuleInterop": true,
    "resolveJsonModule": true,
    "noEmitOnError": true,
    "noUnusedLocals": true,
    "noFallthroughCasesInSwitch": true,
    "noUnusedParameters": true,
    "forceConsistentCasingInFileNames": true,
    "suppressImplicitAnyIndexErrors": true,
    "allowSyntheticDefaultImports": true,
    "typeRoots": [
      "node_modules/@types",
      "typings"
    ]
  },
  "exclude": [
    "**/node_modules",
    "**/.*/",
    "**/dist",
    "**/*.spec.ts"
  ]
}