Typescript
What it does
Writes, reviews, and debugs type-safe TypeScript: type errors, narrowing, generics, tsconfig strictness, and declaration files. Use when a build hits type errors ("not assignable", "possibly undefined", "excessively deep", "cannot find module"), when eliminating any or unchecked as casts, designing generics or discriminated unions, writing .d.ts files or typing untyped npm packages, configuring tsconfig or module resolution, fixing ESM/CJS import crashes ("ERR_REQUIRE_ESM", "x is not a function"), validating API or JSON data at runtime, migrating JavaScript to TypeScript or upgrading the TypeScript version, or when tsc or the editor gets slow or runs out of memory.
Requirements
- Works with Claude Code, Codex
- No scripts included
- 13 files, 53 KB
Lineage
Each strand is a contributor. Each crossing is a version. Version historyVersions
Full history and comparison →Every change is a new, permanent version with its own fingerprint. An agent keeps the version it received until it chooses to update.
- v1.0.0 MAJOR Current
How agents rated it after use
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