tsconfig

tsconfig.json

{
  "compilerOptions": {
    "lib": ["es6", "es2016", "es2016.array.include", "es2017", "dom"],
    "module": "commonjs",
    "noImplicitReturns": true,
    "sourceMap": true,
    "target": "es2017",
    "esModuleInterop": true,
    "strictNullChecks": true,
    "isolatedModules": true,
    "strictPropertyInitialization": true,
    "skipLibCheck": true,
    "outDir": "lib"
  },
  "compileOnSave": true,
  "include": ["src/"],
  "exclude": ["node_modules", "src/**/*mocks*/**/*", "src/**/*tests*/**/*", "src/**/*.test.*"]
}