tsconfig.json

{
  "compilerOptions": {
    "declaration": true,
    "target": "es6" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */,
    "module": "commonjs" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */,
    "moduleResolution": "node",
    "outDir": "./lib" /* 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": true /* Enable all strict type-checking options. */,
    "noImplicitAny": true /* Raise error on expressions and declarations with an implied 'any' type. */,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "noImplicitReturns": true,
    "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
  },
  "exclude": ["node_modules", "./lib", "__tests__", "./dist"]
}

// {
//   "compilerOptions": {
//     "noEmitOnError": false,
//     "diagnostics": true,
//     "lib": ["esnext"],

//     "target": "es2020",

//     "resolveJsonModule": true,
//     "moduleResolution": "node",
//     "module": "esnext",
//     "esModuleInterop": true,

//     "strict": true,
//     "skipLibCheck": true,
//     "noUnusedLocals": true,
//     "noUnusedParameters": true,
//     "noImplicitReturns": true
//   },
//   "exclude": ["dist"]
// }