Define the scan observation contract before any keyboard walk optimization
Nobody has claimed this yet.
Assessment
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Newbie friendliness
- 45/100
- Issue type
- Feature
- Clarity
- Mostly clear
- Activity status
- Stale
- Tech stack
- playwright, typescript
- Domain
- accessibility, testing-qa
Research direction
Read the transcript walk and keyboard walk provider code that implement the fixed 50 presses and accessibility node reads; the issue does not name their files or tests. First establish the observation contract for press count, node read timing, and page state, then re-baseline the findings and verdicts against it. Done means the walk-once change preserves that contract and matches the re-baselined behavior.
Written by the indexing model from the issue text.
Description
What
The transcript walk presses Tab a fixed 50 times and discards everything after the first repeated element path; the keyboard walk provider then walks the same focus order a second time and reads the accessibility node twice per stop.
Why the obvious fix was dropped
A branch that stopped the walk at the first cycle and read the node once produced identical transcripts but different findings and verdicts on real Chromium: the discarded presses fire focus and blur handlers that mutate the page (a button added after the third focus made the old walk a regression and the new walk verified, and the reverse also occurred), and a single read drafts from an earlier instant than the second read.
Direction
Write down the observation contract first: exactly how many presses, when the node is read, what page state the providers see. Then re-baseline against it and make the walk-once change under that contract. Measured saving: about 1 second on a small app, about 2.5 seconds on a large one, more with the duplicate read removed.
- Dominant language
- TypeScript
- Stars
- 0
- Forks
- 0
- Avg merge
- 2h 48m
- Merged PRs (30d)
- 8
Getting set up
- No Dockerfile or Docker Compose file
- Has a pull request template
- No contributing guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
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