{ "compilerOptions": { "target": "ES2020", "useDefineForClassFields": true, "lib": ["ES2020", "DOM", "DOM.Iterable"], "module": "ESNext", "moduleResolution": "bundler", "jsx": "react-jsx", "strict": true, // #101. Indexing gives `T | undefined`, which it always did — this makes // the compiler say so. "noUncheckedIndexedAccess": true, "skipLibCheck": true, "esModuleInterop": true, "noEmit": true }, "include": ["src"] }