tsconfig.json

{
  "compilerOptions": {
    "target": "es2019", // 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'.
    "strict": true, // // Enable all strict type-checking options.
    "esModuleInterop": true, // Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'.
    "forceConsistentCasingInFileNames": true, // Disallow inconsistently-cased references to the same file.
    "outDir": "lib",
    "lib": ["ES2020.Promise", "dom"],
    "declaration": true,
    "sourceMap": true,
    "resolveJsonModule": true,
    "baseUrl": ".",
    "paths": {
      "*": ["node_modules/*"]
    }
  },
  "exclude": ["src/**/*.test.ts", "src/**/__mocks__/*.ts"],
  "include": ["src/**/*"]
}