tsconfig.json

{
  "include": ["packages"],
  "exclude": ["node_modules"],
  "compilerOptions": {
    "target": "es2020",
    "module": "esnext",
    "lib": ["es2020"],
    "allowJs": false,
    "incremental": false,
    "checkJs": false,
    // "jsx": "preserve",
    "declaration": true,
    "declarationMap": true,
    "declarationDir": "typings",
    // "outFile": "./",
    "outDir": "cjs",
    // "rootDir": ".",
    "composite": false,
    "removeComments": true,
    "noEmit": true,
    // "importHelpers": true,
    // "downlevelIteration": true,
    // "isolatedModules": true,

    "strict": true,
    "alwaysStrict": true,
    "noImplicitAny": true,
    "noImplicitThis": true,
    "noImplicitReturns": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "strictNullChecks": true,
    "strictPropertyInitialization": true,
    "strictFunctionTypes": true,
    "strictBindCallApply": true,
    "noFallthroughCasesInSwitch": true,
    "forceConsistentCasingInFileNames": true,

    "moduleResolution": "node",
    "baseUrl": "src",
    // "paths": {},
    // "rootDirs": [],
    "typeRoots": ["./node_modules/@types", "types"],
    // "types": [],
    "allowSyntheticDefaultImports": true,
    "esModuleInterop": true,
    // "preserveSymlinks": true,

    // "sourceRoot": "./src",
    // "mapRoot": "maps" ,
    "sourceMap": true,
    "inlineSourceMap": false
    // "inlineSources": false

    // "experimentalDecorators": true,
    // "emitDecoratorMetadata": true,
  }
}