tsconfig.json

{
  "compilerOptions": {
    "declaration": true,
    "resolveJsonModule": true,
    "moduleResolution": "node",
    "incremental": true,                         /* Enable incremental compilation */
    "target": "es5",                                /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */
    "module": "commonjs",                           /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
    "outDir": "dist",                              /* Redirect output structure to the directory. */
    "rootDir": "lib",                             /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
    "strict": false,                                 /* Enable all strict type-checking options. */
    "strictPropertyInitialization": false,        /* Enable strict checking of property initialization in classes. */
    "esModuleInterop": true,                        /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
    "experimentalDecorators": true,              /* Enables experimental support for ES7 decorators. */
    "emitDecoratorMetadata": true,               /* Enables experimental support for emitting type metadata for decorators. */
    "skipLibCheck": true,                           /* Skip type checking of declaration files. */
    "forceConsistentCasingInFileNames": true        /* Disallow inconsistently-cased references to the same file. */
  },
  "include": ["lib/**/*.ts"],
  "exclude": ["node_modules"]
}