tsconfig.json

{
  "compilerOptions": {
    "baseUrl": "./", // enables relative imports to root
    "paths": {
      "@src/*": ["app/*"]
    },
    "outDir": "out/", // target for compiled files
    "allowJs": true, // include js files
    "checkJs": true, // typecheck js files
    "declaration": false, // don't emit declarations
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "forceConsistentCasingInFileNames": true,
    "importHelpers": true, // importing helper functions from tslib
    "noEmitHelpers": true, // disable emitting inline helper functions
    "jsx": "react", // process JSX
    "lib": ["dom", "es2016", "es2017.object"],
    "allowSyntheticDefaultImports": true,
    "target": "es6",
    "module": "es6",
    "moduleResolution": "node",
    "noEmit": true, // no emit in dev, only when bundling for prod, which is usually handled by bundlers like webpack / fuse-box / jspm
    "noEmitOnError": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitAny": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "strictNullChecks": false,
    "pretty": true,
    "removeComments": true,
    "sourceMap": true
  },
  "include": ["app/**/*"],
  "exclude": ["node_modules", "dist"]
}