[Feature]: Server-side HAR recording and replay for SSR applications #37679
Description
🚀 Feature Request
Add the ability to record and replay HAR files for HTTP requests made during server-side rendering (SSR) in Node.js applications, not just browser-level requests. This would enable comprehensive E2E testing of modern frameworks like Next.js, Remix, and SvelteKit where the majority of API calls happen in the Node.js process before pages reach the browser.
Alternative: augment https://playwright.dev/docs/mock with recommendations on mocking server-to-server communication without introducing additional Playwright API.
Example
No response
Motivation
Playwright's HAR recording (recordHar) and replay (routeFromHAR) only cover browser-level network traffic. This creates a gap for testing SSR applications where most API calls occur server-side during initial page rendering.