tsconfig.json

{
  "compilerOptions": {
    /* Basic Options */
    "module": "esnext" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */,
    "lib": [
      "DOM",
      "DOM.Iterable",
      "ESNext"
    ] /* Specify library files to be included in the compilation. */,
    "declaration": true,
    "emitDeclarationOnly": true,
    "outDir": "app/Resources/types",
    "rootDir": "app/Resources",

    /* Strict Type-Checking Options */
    "strict": true /* Enable all strict type-checking options. */,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "allowSyntheticDefaultImports": true,
    "experimentalDecorators": true,
    "forceConsistentCasingInFileNames": true,

    "skipLibCheck": true,

    /* Module Resolution Options */
    "moduleResolution": "node",
    "baseUrl": "app/Resources/js" /* Base directory to resolve non-absolute module names. */
  },
  "include": ["app/Resources/js/**/*.ts"],
  "exclude": []
}