tsconfig.json

{
  "include": ["src/**/*.ts"],
  "exclude": ["node_modules", "**/*.test.ts", "**/*.spec.ts"],
  // Do not compile with TSC.

  "compilerOptions": {
    /* Basic Options */
    "target": "es2018" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017','ES2018' or 'ESNEXT'. */,
    // Use esnext for pika pkg else commonjs modules.
    "module": "esnext" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */,
    // Allow to use node modules.
    "moduleResolution": "node",
    // Do not compile with TSC.
    // "noEmit": true,
    // Use dom and latest ES typings.
    "lib": ["dom", "es2018"],
    // Use for debugging and error tracking.
    "sourceMap": true,

    "outDir": "./dist" /* Redirect output structure to the directory. */,
    "rootDir": "./src" /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */,

    // Strict type checks.
    "strict": true /* Enable all strict type-checking options. */,
    //  Change this after finishing converting all ts
    "noImplicitAny": false,

    // Dead code checks.
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    // Possible bug checks.
    "noFallthroughCasesInSwitch": true,
    "forceConsistentCasingInFileNames": true
  }
}