This Pattern Will Wreck Your React App's TS Performance

Matt PocockMatt is a well-regarded TypeScript expert known for his ability to demystify complex TypeScript concepts. A couple of years ago, Sentry were having big problems with their React app. They'd pretty recently migrated it to TypeScript from JavaScript. And the app was part of a large monorepo. But the IDE performance was slow. You'd often need to wait a couple of seconds after making a chan

[jay-es]

交差型よりも interface + extends の方が少し速い。interface は作成された時にプロパティをチェックするが、type は使うたびにチェック。React.HTMLAttributes のような巨大な型を & で拡張し多用すると遅くなる