tsconfig.json

{
  "compilerOptions": {
    "target": "es5",
    "module": "commonjs", // CommonJS destroys 'dynamic imports' which is used for code splitting
    "noImplicitAny": false,
    "preserveConstEnums": true,
    "lib": ["dom", "es5", "es6", "es7", "es2017"],
    "allowSyntheticDefaultImports": true, // No errors with commonjs modules interop
    "esModuleInterop": true,
    "allowJs": true,
    "declaration": false,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "forceConsistentCasingInFileNames": true,
    "moduleResolution": "node",
    "noEmitOnError": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noUnusedLocals": false,
    "strict": true,
    "strictFunctionTypes": false,
    "pretty": true,
    "removeComments": true,
    "noEmit": true,
    "skipLibCheck": true,
  },
  "include": [
    "index.ts"
  ],
  "exclude": [
    "node_modules",
    "dist",
  ]
}