https://netguide.jp/en/tags/programming/Recent content in Programming on KaisekukunHugo -- gohugo.ioenKaisekukunThu, 05 Mar 2026 12:00:00 +0900https://netguide.jp/en/software/typescript-5-new-features/Thu, 05 Mar 2026 12:00:00 +0900https://netguide.jp/en/software/typescript-5-new-features/<img src="https://netguide.jp/img/thumbnail/typescript-5-new-features-en.png" alt="Featured image of post TypeScript 5 Features and Practical Best Practices" /><p>As the absolute standard for frontend and backend development, <strong>TypeScript</strong> continues to evolve.</p> <p>The TypeScript 5.x releases focus heavily on compiler speed, bundle reductions, and syntax refinements that dramatically improve Developer Experience (DX). In this article, we cover practical TypeScript 5 features you should adopt in your daily workflows.</p> <hr> <h3 id="1-const-type-parameters">1. <code>const</code> Type Parameters </h3><p>Previously, if you wanted TypeScript to infer an object literal arguments as narrow, read-only literal types, the caller had to append <code>as const</code> to the arguments.</p>