What have we done? ¶

• Display list experiment
• Optimized offsetWidth/height
• Indexed DB improvement

Loading ¶

• Clean up loading code, for realz
• Page cache cleanup

Standards things ¶

• Maintain status on all the CSS Properties
• Event loop
• Fetch spec and API
• Service Workers
• Event handler attributes
• Intersection observer
• Scroll-linked effects
• Houdini

Page & friends ¶

• Page/Frame/FrameView/FrameLoader disambiguation
• Unify scrolling architecture
  • Get WebKit1 scrolling out of WebCore

Code organization ¶

• PAL

Layout & Rendering ¶

• Readonly render tree?
• Ref-counted renderers?
• Remove Widgets
  • subpixel
  • another useless hierarchy
• Removal of continuations

Compositing ¶

• One compositing update per frame
• Compositing post-display lists

Debuggability ¶

• Logging
• Log channels
• Dumping
• lldb macros
• notifyutil -p com.apple.WebKit.showRenderTree