Testing

playwright-soak repeats a user flow a few hundred times inside a Playwright test, forces GC, and fails the build if DOM nodes, listeners or heap keep piling up. A smoke alarm for the slow leaks that make a day-long tab drag.

• Playwright
• Testing
• Memory leaks
• Performance
• Open source

Playwright can mock browser requests, but not the fetches Next.js makes during SSR. How I record real API responses once and replay them on CI. It's the VCR pattern Ruby nailed years ago, rebuilt for SSR.

• Playwright
• Testing
• Next.js
• Open source
• VCR
• Polly.js