tsconfig.json

{
  "compilerOptions": {
    "target": "esnext",
    "moduleResolution": "node",
    "emitDeclarationOnly": true,
    "strict": true,
    "esModuleInterop": true,
    "declaration": true,
    "declarationDir": "build/esmodules",
    "useDefineForClassFields": true,
    "lib": ["esnext", "ES2020", "DOM", "DOM.Iterable"],
    "module": "ESNext",
    "skipLibCheck": true,
    /* Bundler mode */
    "allowImportingTsExtensions": true,
    "resolveJsonModule": true,
    "isolatedModules": true,
    "jsx": "react-jsx",
    /* Linting */
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitOverride": true,
    "noImplicitReturns": true,
    "noPropertyAccessFromIndexSignature": true
    // "noUncheckedIndexedAccess": true
  },
  "include": ["src", "public", "tools"]
}