Taobao Frontend Technology
May 14, 2021 · Frontend Development
Unlock TypeScript 3.7+ Power: Must‑Know New Features for Safer, Cleaner Code
This article reviews the most practical TypeScript enhancements since version 3.7—including optional chaining, private fields, inferred class properties, variadic and labeled tuples, recursive JSON types, improved error handling, unknown types, assertion functions, and type‑only imports—to help developers write more robust and maintainable code.
New FeaturesTypeScriptassertion functions
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