typescript-knowledge-patch
TypeScript 5.9+ Knowledge Patch
Claude's baseline knowledge covers TypeScript through 5.8. This skill provides features from 5.9 (May 2025) onwards.
Source: https://devblogs.microsoft.com/typescript/
5.9
| Feature | What to know |
|---|---|
import defer |
import defer * as ns from "mod" — defers module execution until first property access. Namespace imports only. Requires --module preserve or esnext. |
--module node20 |
Stable pinned option for Node.js 20. Implies --target es2023. |
ArrayBuffer breaking change |
ArrayBuffer is no longer supertype of TypedArray. Fix: use Uint8Array<ArrayBuffer>, access .buffer, or update @types/node. |
| Type argument inference | Generic type inference fixes may introduce new errors from "leaked" type variables. Fix by adding explicit type arguments to generic function calls. |
TypeScript 7 (Native Port)
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