tsconfig.json

{
  "compilerOptions": {
    "outDir": "./dist/",         // path to output directory
    "sourceMap": true,           // allow sourcemap support
    "strict": true,
    "module": "es6",             // specify module code generation
    "jsx": "react",              // use typescript to transpile jsx to js
    "target": "es6",             // specify ECMAScript target version
    "allowJs": false,             // allow a partial TypeScript and JavaScript codebase
    "noImplicitAny": true,
    "noUnusedLocals": true,
    "moduleResolution": "node",
    "strictNullChecks": true,    // enable strict null checks as a best practice
    "allowSyntheticDefaultImports": true,
    "forceConsistentCasingInFileNames": true
  },
  "include": [
    "app/src/js/entries/*.tsx",
    "app/src/js/entries/*.ts"
  ],
  "exclude": [
    "node_modules"
  ]
}