gecko-dev VS WebKit

You can see how Mozilla tests the compliance of their built-in elements in the Gecko repository (the ok and is assertions are defined in their SimpleTest testing framework). And here's the Web Platform Tests' reflection harness, with data for each built-in element in sibling files, that almost every browser pass.

The source is mirrored on GitHub here: https://github.com/mozilla/gecko-dev

Code search is here: https://searchfox.org/mozilla-central/

Yes. https://github.com/mozilla/gecko-dev/tree/32c74afbb24dce4b5d...

aWheelInput.mDeltaY looks like the increment setting used for this https://github.com/mozilla/gecko-dev/commit/9033e3e1200acfd4b8f8ae024c215b99d12b97bdTried "mousewheel.default.delta_multiplier_y" and "mousewheel.with_control.delta_multiplier_y" without much luck.It may have something to do with https://bugzilla.mozilla.org/show_bug.cgi?id=1138704 although this case is about pinch zoom emulation.

You could add the feature by writing code to support is - https://firefox-source-docs.mozilla.org/setup/index.html

I checked Firefox monorepo, it has over 4x more C++ than Rust.

Are you leaving steps out or is your OP exhaustive? If you just straight up cloned release and that's it, start all over and follow https://firefox-source-docs.mozilla.org/setup/index.html for your OS

Multiple engineers are working on adding it back: https://github.com/WebKit/WebKit/pulls?q=is%3Apr+is%3Aclosed...

Since 2023 Chrome announced the View Transition API, and it looks like Safari is also going to support it soon.

One heap per type.

Here’s an allocator optimized for that use case.

https://github.com/WebKit/WebKit/blob/main/Source/bmalloc/li...

To use this in Bun, you’d have to start Bun with the environment variable “BUN_JSC_useDollarVM=1” and then $vm.createBuiltin(mySourceCodeString)

When using this intrinsic, if any of the arguments are incorrect or it cannot otherwise enable it, the entire process will probably crash. In debug builds of JSC it will have a nicer assertion failure but that is not enabled in release builds

Example code: https://github.com/WebKit/WebKit/blob/17351231b4dedb62d81721...

also happy to answer any questions about Bun

Ah, good, let me introduce you to the wonderful world of the Chrome Devtools Protocol! (fka Chrome Remote Debugging Protocol)

I love this API for almost everything browser related. I built my RBI product atop this (BrowserBox: https://dosyago.com), and I think it's a drastically underrated API.

Also, it works out of the box in Edge, Brave, Chromium, and many parts of CRDP are supported by Firefox and Safari^1

1: See for example: https://github.com/WebKit/webkit/tree/main/Source/JavaScript...

No, it's unrelated.

https://github.com/WebKit/WebKit/commit/064df1a9f395f8c6e32c...

It's being worked on now: https://github.com/WebKit/WebKit/pull/17320

It is different. The cross-site navigation flag is a couple of years old. It was enabled by default for iOS in November 2018 for example https://github.com/WebKit/WebKit/commit/e191fc8c412850cb9fd0...