القائمة
JavaScript bundle analysis. Checks bundle sizes, tree-shaking effectiveness, duplicate dependencies, and chunk splitting.
التثبيت باستخدام Codex أو Claude انسخ هذا Prompt والصقه في Codex أو Claude أو مساعد آخر ليراجع صفحة Skill ويثبّتها لك.
استنادا إلى تصنيف SOC المهني
| name | bundle-analyze |
| description | JavaScript bundle analysis. Checks bundle sizes, tree-shaking effectiveness, duplicate dependencies, and chunk splitting. |
Analyzes JavaScript bundles for size issues, duplicate dependencies, and optimization opportunities.
{
"project_dir": "/path/to/project",
"build_dir": "dist/",
"budgets": {
"total": "500KB",
"main": "200KB",
"vendor": "300KB"
},
"checks": ["size", "duplicates", "tree_shaking"]
}
# Get file sizes
du -h dist/*.js
# Get gzipped sizes
gzip -c dist/main.js | wc -c
# Generate bundle analysis
npx source-map-explorer dist/main.js --json > bundle-analysis.json
# Find duplicate packages
npx depcheck --json | jq '.missing, .dependencies'
# Check bundle for duplicates
npx webpack-bundle-analyzer dist/stats.json --mode static
// Check if unused exports are removed
// Look for side-effect-free imports that should be eliminated
{
"skill": "bundle-analyze",
"status": "pass|warning|fail",
"bundles": {
"total": {
"raw": "423KB",
"gzip": "142KB",
"budget": "500KB",
"passed": true
},
"main": {
"raw": "156KB",
"gzip": "52KB",
"budget": "200KB",
"passed": true
},
"vendor": {
"raw": "267KB",
"gzip": "90KB",
"budget": "300KB",
"passed": true
}
},
"duplicates": [
{
"package": "lodash",
"versions": ["4.17.21", "4.17.19"],
"size_impact": "24KB",
"suggestion": "Dedupe to single version"
}
],
"large_modules": [
{
"module": "moment",
"size": "67KB",
"suggestion": "Replace with date-fns or dayjs"
}
],
"tree_shaking": {
"effective": true,
"unused_exports": []
},
"suggestions": [
"Consider lazy loading for route /dashboard",
"Replace moment.js with lighter alternative"
],
"errors": [],
"next_action": "proceed|optimize"
}
| Bundle Type | Warning | Fail |
|---|---|---|
| Total | >400KB | >600KB |
| Main | >150KB | >250KB |
| Vendor | >250KB | >400KB |
| Per-route chunk | >100KB | >200KB |
| Check | What it Validates |
|---|---|
size | Bundle sizes within budget |
duplicates | No duplicate package versions |
tree_shaking | Unused code eliminated |
chunks | Proper code splitting |
sourcemaps | Source maps generated |
Any bundle exceeds fail threshold?
YES → status: "fail", next_action: "optimize"
Any bundle exceeds warning threshold?
YES → status: "warning", suggestions populated
Duplicate packages found?
YES → Add to suggestions
All within budget?
YES → status: "pass", next_action: "proceed"
Full bundle analysis:
{
"project_dir": "/projects/react-app",
"build_dir": "build/",
"budgets": {
"total": "500KB",
"main": "200KB",
"vendor": "300KB"
},
"checks": ["size", "duplicates", "tree_shaking"]
}
Quick size check:
{
"project_dir": "/projects/react-app",
"build_dir": "dist/",
"budgets": {
"total": "500KB"
},
"checks": ["size"]
}
Duplicate detection:
{
"project_dir": "/projects/react-app",
"build_dir": "dist/",
"checks": ["duplicates"]
}
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