r-util-js/tsconfig.base.json

{
  "compilerOptions": {
    "target": "esnext",
    "useDefineForClassFields": true,
    "module": "esnext",
    "moduleResolution": "bundler",
    "strict": true,
    "jsx": "preserve",
    "sourceMap": true,
    "resolveJsonModule": true,
    "esModuleInterop": true,
    "lib": ["dom", "esnext"],
    "allowJs": true,
    "noEmit": true,
    "skipLibCheck": true
  }
}