beachball/tsconfig.json

{
  "compilerOptions": {
    "outDir": "./lib",
    // compatible with node 14
    "target": "ES2020",
    "module": "commonjs",
    "moduleResolution": "node",
    "declaration": true,
    "declarationMap": true,
    "sourceMap": true,
    "strict": true,
    "noUnusedLocals": true,
    "forceConsistentCasingInFileNames": true,
    "esModuleInterop": true,
    "allowJs": true,
    "checkJs": true,
    "skipLibCheck": true,
    "lib": ["ES2020"],
    "types": ["node"]
  },
  "include": ["src/**/*"]
}