startup-time-profiler

# startup-time-profiler Profile and optimize application startup time, identifying bottlenecks in initialization, module loading, and rendering. ## Capabilities - Measure cold and warm start times - Identify module loading bottlenecks - Profile initialization phases - Generate timeline visualizations - Provide optimization recommendations - Set up CI performance tracking ## Input Schema ```json { "type": "object", "properties": { "projectPath": { "type": "string" }, "framework": { "enum": ["electron", "tauri", "native"] }, "iterations": { "type": "number", "default": 5 } }, "required": ["projectPath"] } ``` ## Electron Startup Profiling ```javascript // Add to main.js const startTime = Date.now(); app.on('ready', () => { console.log(`App ready: ${Date.now() - startTime}ms`); }); // Enable tracing app.commandLine.appendSwitch('trace-startup'); app.commandLine.appendSwitch('trace-startup-file', 'startup-trace.json'); ``` ## Optimization Techniques 1. Lazy load modules 2. Defer non-critical initialization 3. Optimize bundle size 4. Use V8 snapshots 5. Preload critical resources ## Benchmarks | Metric | Good | Acceptable | Poor | |--------|------|------------|------| | Cold start | < 2s | < 4s | > 6s | | Warm start | < 1s | < 2s | > 3s | | Window visible | < 1.5s | < 3s | > 5s | ## Related Skills - `memory-leak-detector` - `bundle-size-analyzer`