#TypeScript 今週の必読記事7件（TechFeed Weekly 2021-03-07）

日本版: 1. プログラミング言語「TypeScript 4.2」をMicrosoftが公開 2. TypeScript v4 まとめ 海外版: 1. Announcing the New TypeScript Handbook 2. Deno - A secure runtime for JavaScript and TypeScript 3. How an Anti-TypeScript “JavaScript developer” like me became a TypeScript fan 4. How to write a React Component in TypeScript 5. TypeScript and why you should type your JS project