tsconfig.json

{
  "compilerOptions": {
    "target": "ES2018" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */,
    "module": "ES2015" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */,
    "outDir": "./dist" /* Redirect output structure to the directory. */,
    "rootDir": "./src",
    "strict": false /* Enable all strict type-checking options. */,
    "baseUrl": "./src" /* Base directory to resolve non-absolute module names. */,
    "typeRoots": [
      "node_modules/@types"
    ] /* List of folders to include type definitions from. */,
    "types": [
      "node",
      "jest"
    ] /* Type declaration files to be included in compilation. */,
    "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */,
    "inlineSourceMap": true /* Emit a single file with source maps instead of having a separate file. */,
    "forceConsistentCasingInFileNames": true /* Disallow inconsistently-cased references to the same file. */,
    "declaration": true,
    "moduleResolution": "node"
  }
}