Migrate to whatwg-fetch polyfill

[Copilot]

Replaces node-fetch with whatwg-fetch (github/fetch) for standards-compliant fetch polyfill in Node.js environments.

Changes

• fetchPolyfill.js: Simplified from async dynamic import to direct require('whatwg-fetch')
• cdp/utils.ts: Removed node-fetch Response import (now globally available)
• jest.config.js: Added whatwg-fetch to transformIgnorePatterns
• package.json: Added whatwg-fetch@^3.6.20 dependency

Before/After

// Before: fetchPolyfill.js
function fetch(...args) {
  return import('node-fetch').then(({ default: _fetch }) => _fetch(...args));
}
if (!globalThis.fetch) {
  globalThis.fetch = fetch;
  // ... manual polyfilling
}

// After: fetchPolyfill.js
require('whatwg-fetch');

Note: node-fetch remains in jest transformIgnorePatterns for transitive dependencies (graphql-request → cross-fetch).

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• fonts.googleapis.com
  • Triggering command: /opt/hostedtoolcache/node/24.13.0/x64/bin/node /opt/hostedtoolcache/node/24.13.0/x64/bin/node /home/REDACTED/work/web/web/apps/web/node_modules/next/dist/bin/next build s est.�� (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.