TypeScript 5.4 to 5.8: The Features That Actually Matter in 2026

I've been tracking TypeScript releases for 3 years. Most release notes are noise — "improved inference in corner cases" doesn't change how you write code. Here's what actually matters from the last 6 TypeScript versions: the features I've incorporated into my daily workflow, with practical examples.

TypeScript 5.8: The Latest Features That Ship Today

1. infer in Template Literal Types (Finally Fixed)

Template literal types introduced infer for extracting parts of string types. But the original implementation was buggy — it would infer never in certain conditions.