tsconfig.json

{
  "compilerOptions": {
    "typeRoots": ["./node_modules/@types", "./src/@types"],
    "types": ["node", "jest"],
    "target": "es2017",                             /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', 'ES2021', or 'ESNEXT'. */
    "module": "commonjs",                           /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
    "strict": true,                                 /* Enable all strict type-checking options. */
    "resolveJsonModule": true,			        	/* Import JSON modules */
    "outDir": "./build", 					        /* Redirect output structure to the directory. */
    "rootDir": "./",
    "esModuleInterop": true,                        /* 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. */
    "forceConsistentCasingInFileNames": true,        /* Disallow inconsistently-cased references to the same file. */
    "allowSyntheticDefaultImports": true,
    "downlevelIteration": true,
    "allowJs": true,
    "checkJs": false
  },
  "include": [
    "./index.ts",
    "./src",
    "./tests"
  ],
  "exclude": [
    "build",
    "coverage"
  ]
}