Implement native Fetch API host support (Window.fetch, Request/Response/Headers, body mixin)#1120

Draft

Copilot wants to merge 11 commits into

copilot/add-fetch-api-support

Commits on May 19, 2026

Initial plan
Copilot
authored
Implement native Fetch API host objects and window.fetch support

Copilot
and
rbri
authored
Split fetch host tests into Headers/Request/Response test classes

Copilot
and
rbri
authored
Fix RequestTest constructorWithInit for real-browser compatibility

Copilot
and
rbri
authored
Stabilize RequestTest bodyMethods log order across browsers

Copilot
and
rbri
authored
Stabilize RequestTest constructorWithInit log ordering

Copilot
and
rbri
authored
Align RequestTest invalid URL case with real browsers

Copilot
and
rbri
authored
Make RequestTest invalidConstructionCases first call reliably fail

Copilot
and
rbri
authored
Stabilize async ordering in ResponseTest bodyMethods

Copilot
and
rbri
authored
Fix ResponseTest staticMethods for real browsers

Copilot
and
rbri
authored
Adjust ResponseTest staticMethods redirect expectations

Copilot
and
rbri
authored