tsconfig.json

{
  "compilerOptions": {
    "target": "es5",
    "module": "commonjs" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */,
    "jsx": "react",
    // "outFile": "./",                       /* Concatenate and emit output to single file. */
    "outDir": "./lib" /* Redirect output structure to the directory. */,
    "strict": true /* Enable all strict type-checking options. */,
    "baseUrl": "./" /* Base directory to resolve non-absolute module names. */,
    "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */,
    // "allowJs": true,
    /* Advanced Options */
    "skipLibCheck": true /* Skip type checking of declaration files. */,
    "forceConsistentCasingInFileNames": true /* Disallow inconsistently-cased references to the same file. */,
    "declaration": true
  },
  "exclude": ["node_modules", "example", "lib"],
  "include": ["src"]
}