- A fake
requestAnimationFrame()callback—“fake” because it is not triggered by the video refresh but rather a simple timer.
- Per-process shared lock for author-origin stylesheets
- Focus events
- Specifies the type of focus event that is sent to a pipeline
- The amount of time between fake
- The number of times we are allowed to see spurious
requestAnimationFrame()calls before falling back to fake ones.
- LAZY 🔒