tsconfig.json
{ "compilerOptions": { /* Visit https://aka.ms/tsconfig.json to read more about this file */ /* Basic Options */ "target": "ES6", "module": "CommonJS", "declaration": true, "outDir": "build", /* Strict Type-Checking Options */ "strict": true, /* Module Resolution Options */ "moduleResolution": "node", "types": ["@types/node", "@types/jest"], "esModuleInterop": true, /* Advanced Options */ "skipLibCheck": true, "forceConsistentCasingInFileNames": true, "keyofStringsOnly": true }, "include": ["src"]}