Node.js profiling tools

• Profiling Node.js Applications
• Flame graphs
• Linux Perf
• Heap Profiler
• Heap Snapshot
• GC (Garbage Collection) Traces
• Visual Studio Code: Performance Profiling JavaScript

Webpack

NODE_ENV=production node --cpu-prof ./node_modules/webpack-cli/bin.js
NODE_ENV=production node --heap-prof ./node_modules/webpack-cli/bin.js
NODE_ENV=production node --expose-gc ./node_modules/webpack-cli/bin.js
node --trace-gc --max-old-space-size=4000 ./node_modules/webpack-cli/bin.js

Jest

node --expose-gc --no-compilation-cache ./node_modules/jest-cli/bin/jest.js --logHeapUsage
node --heap-prof --expose-gc --no-compilation-cache ./node_modules/jest-cli/bin/jest.js --logHeapUsage