source-command-tech-dupes

# source-command-tech-dupes Use this skill when the user asks to run the migrated source command `tech-dupes`. ## Command Template # Code Duplication Detector — StarMapper ## Usage ``` /tech:dupes ``` ## What It Does 1. Runs `pnpm dupes` (jscpd) on the `src/` directory 2. Analyzes results against StarMapper-specific patterns 3. Outputs structured report with action plan ## Setup Check If `pnpm dupes` is not configured, add to package.json: ```json "dupes": "jscpd src/ --threshold 3 --min-lines 5 --reporters console,json --output .dupes-report" ``` And install: `pnpm add -D jscpd` ## StarMapper Duplication Patterns to Watch | Pattern | Location | Risk | |---------|----------|------| | `location.toLowerCase().trim()` | geocoder, routes | Should exist ONLY in geocoder.ts | | GitHub error parsing | github.ts, chunk/route.ts | Extract to github.ts | | Compression/decompression logic | page.tsx, cache routes | Extract to lib/compression.ts | | `checkDbHealth()` call pattern | user-cache, cache routes | OK if identical — it's a guard | | `NextResponse.json({ error: ... })` patterns | all routes | Accept duplication here | | `cursor ? { cursor } : {}` | github.ts | Should only be in github.ts | ## Thresholds | Metric | Target | Action | |--------|--------|--------| | Duplication % | < 3% | Above → refactor | | Clone count | < 10 | Above → prioritize | | Max clone size | < 25 lines | Above → extract function | ## Output Format ``` ## Duplication Report — StarMapper **Date**: {date} **Duplication**: X% ({target: < 3%}) **Clones found**: N ### Top Clones 1. [file:line] ↔ [file:line] — {N} lines Pattern: {brief description} Action: {extract to / delete duplicate} ### Action Plan #### Quick Wins (< 30min) 1. ... #### Refactoring (1-2h) 2. ... #### Prevention - Add `pnpm dupes` to CI check ```