tsconfig.json

{
  "compilerOptions": {
    "lib": ["ESNext"],
    "module": "Preserve",
    "target": "ESNext",
    "moduleResolution": "Bundler",
    "moduleDetection": "force",
    "allowImportingTsExtensions": false,
    "noEmit": false,
    "composite": false,
    "strict": false,
    // "downlevelIteration": true,
    "skipLibCheck": true,
    "allowSyntheticDefaultImports": true,
    "forceConsistentCasingInFileNames": true,
    "esModuleInterop": true,
    "types": ["@types/node"],

    "outDir": "lib/",
    "sourceMap": true,
    "declaration": true,
    // "isolatedModules": true,
    // "importsNotUsedAsValues": "remove",
    // "importHelpers": true
  },
  
  "include": ["src/**/*"],
  "exclude": ["node_modules", "**/*.spec.ts", "lib"],
  "watchOptions": {
    // Use native file system events for files and directories
    "watchFile": "useFsEvents",
    "watchDirectory": "useFsEvents",
    // Poll files for updates more frequently
    // when they're updated a lot.
    "fallbackPolling": "dynamicPriority",
    // Don't coalesce watch notification
    "synchronousWatchDirectory": true
    // Finally, two additional settings for reducing the amount of possible
    // files to track  work from these directories
    // "excludeFiles": ["node_modules/**/*", "lib/**/*"]
  }
}