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---
name: type-fix
description: Fixes TypeScript type errors in a file or across the project
argument-hint: [file-path]
user-invocable: true
allowed-tools: Bash Read Edit Grep
effort: medium
---
## Fix TypeScript Errors
Target: **$1** (or entire project if not specified)
1. Get current errors:
```bash
npx tsc --noEmit 2>&1 | head -50
```
If a specific file was given, filter to that file.
2. Group errors by type:
- `any` type leaks
- Missing null checks
- Incorrect return types
- Property does not exist
- Type mismatch
3. For each error:
- Read the relevant code
- Understand the actual type
- Apply the minimal fix that maintains correctness:
- Prefer proper types over `as any`
- Use optional chaining `?.` for possible nulls
- Narrow with type guards when needed
4. Show changes, ask for confirmation, apply.
5. Re-run `tsc --noEmit` to verify zero errors remain.
