tsconfig.json

{
    "compilerOptions": {
        /* Visit https://aka.ms/tsconfig.json to read more about this file */
        "target": "es2020", /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */
        "module": "es2020", /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
        "allowJs": true, /* Allow javascript files to be compiled. */
        "checkJs": true, /* Report errors in .js files. */
        "strict": true, /* Enable all strict type-checking options. */
        "noImplicitAny": true, /* Raise error on expressions and declarations with an implied 'any' type. */
        "strictNullChecks": true, /* Enable strict null checks. */
        "strictFunctionTypes": true, /* Enable strict checking of function types. */
        "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */
        "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */
        "moduleResolution": "node", /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
        "esModuleInterop": false, /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
        "skipLibCheck": true, /* Skip type checking of declaration files. */
    },
    "files": [
        "index.ts"
    ]
}