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---
name: complexity-report
description: Reports cyclomatic complexity hotspots and refactoring suggestions
argument-hint: [directory]
user-invocable: true
allowed-tools: Bash Grep Read
effort: medium
---
## Complexity Report
Directory: **$1** (or `src/` if not specified)
1. Find complex functions manually (no external tool needed):
```bash
# Functions longer than 50 lines
grep -n "^function \|^ [a-z].*(.*) {" ${1:-src}/**/*.ts 2>/dev/null | head -30
```
Read the top 10 largest files and functions.
2. For each file over 300 lines or function over 40 lines:
- Count the number of if/else/switch/for/while/try blocks (= cyclomatic complexity)
- Note the nesting depth
- Identify the "complexity source"
3. Rank by complexity and report:
```
Top 5 Complexity Hotspots:
src/auth/middleware.ts:handleRequest() CC: 18 Lines: 87
src/api/router.ts:routeRequest() CC: 14 Lines: 120
...
Refactoring recommendations:
1. handleRequest() - extract 3 auth validation blocks into separate functions
2. ...
```
4. Offer to refactor the top offender.
