Proxy subroute with injection #153
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- Accept URL via query param: /proxy?url=https://example.com - Fetch target URL server-side - Inject React Grab script tag into <head> - Rewrite relative URLs to absolute so assets load from origin - Return modified HTML with appropriate headers Co-authored-by: Aiden Bai <aidenybai@users.noreply.github.com>
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@react-grab/cli
grab
@react-grab/ami
@react-grab/amp
@react-grab/claude-code
@react-grab/codex
@react-grab/cursor
@react-grab/droid
@react-grab/gemini
@react-grab/opencode
react-grab
@react-grab/relay
@react-grab/utils
commit: |
- Rewrite <a> href attributes to go through /proxy - Rewrite <form> action attributes for form submissions - Rewrite <meta http-equiv='refresh'> redirect URLs - Use <base> tag for assets (images, scripts, CSS) - Preserve hash links, mailto:, tel:, javascript: as-is Co-authored-by: Aiden Bai <aidenybai@users.noreply.github.com>
- Inject script that wraps history.pushState and history.replaceState - Rewrite URLs to go through proxy before calling native History API - Prevents 'A history state object with URL cannot be created' errors - Required for SPAs that use client-side routing Co-authored-by: Aiden Bai <aidenybai@users.noreply.github.com>
- Create /proxy/asset route to proxy assets with CORS headers - Patch window.fetch to route requests through asset proxy - Patch XMLHttpRequest.open to route requests through asset proxy - Fixes CORS errors for JavaScript-loaded images (e.g., Next.js Image) Co-authored-by: Aiden Bai <aidenybai@users.noreply.github.com>
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Add a
/proxyroute to fetch and inject React Grab into external HTML content.This allows users to proxy any website by providing its URL as a query parameter (
/proxy?url=https://example.com), injecting the React Grab script into the page's head, and rewriting relative URLs to absolute ones for proper asset loading.Slack Thread
Summary by cubic
Add a /proxy route that fetches external pages, injects React Grab, and rewrites navigation to stay within the proxy. Adds an asset proxy with CORS and caching, and patches History/fetch/XHR so SPAs and assets work without CORS errors.
Written for commit 6280b23. Summary will update on new commits.