Typescript on Commahttps://doreentseng.github.io/categories/typescript/Recent content in Typescript on CommaHugoen-usdoreentsengThu, 20 Aug 2026 00:00:00 +0000什麼是 as consthttps://doreentseng.github.io/posts/2026-08-20-as-const/Thu, 20 Aug 2026 00:00:00 +0000https://doreentseng.github.io/posts/2026-08-20-as-const/簡單理解 TypeScript 中的 as const，了解它和 const 的差異，以及如何用 as const 建立 Union Type。