[w3ctag/design-reviews] ViewTransitions: waitUntil() method (Issue #1158)

vmpstr created an issue (w3ctag/design-reviews#1158)

### Specification

https://drafts.csswg.org/css-view-transitions-2/#dom-viewtransition-waituntil

### Explainer

https://github.com/vmpstr/htmldemos/blob/master/vt/waitUntil.md

### Links

- An introduction to the feature, aimed at unfamiliar audiences: [View Transitions explainer](https://github.com/WICG/view-transitions/blob/main/explainer.md)
- A description of the problems that end-users were facing before this proposal: https://github.com/w3c/csswg-drafts/issues/9901
- Alternatives considered: https://github.com/vmpstr/htmldemos/blob/master/vt/waitUntil.md#alternatives-considered
- Examples of how to use the proposal to solve the end-users' problems: https://github.com/vmpstr/htmldemos/blob/master/vt/waitUntil.md
- Web Platform Tests:  https://wpt.fyi/results/css/css-view-transitions/view-transition-waituntil-animation-manipulation.html?label=experimental&label=master&aligned


### The specification

- [x] Follows the [Web Platform Design Principles](https://www.w3.org/TR/design-principles/).
- [x] Includes Security and Privacy Considerations sections based on answers to the [Security/Privacy Questionnaire](https://www.w3.org/TR/security-privacy-questionnaire/).

### Where and by whom is the work is being done?

- GitHub repo:https://github.com/w3c/csswg-drafts
- Primary contacts:
  - @vmpstr, Google, Author
- Organization/project driving the specification: Google
- This work is being funded by: Google
- Primary standards group developing this feature: CSSWG
- Incubation and standards groups that have discussed the design:
  - [CSSWG](https://github.com/w3c/csswg-drafts/issues/9901#issuecomment-2165674531)


### Feedback so far

- Active horizontal reviews: none
- Multi-stakeholder feedback:
  - Chromium comments: authoring the feature
  - Mozilla comments: https://github.com/mozilla/standards-positions/issues/NNN (will edit)
  - WebKit comments: https://github.com/WebKit/standards-positions/issues/NNN (will edit)
- Major unresolved issues with or opposition to this specification: none
- Status/issue trackers for implementations: (will edit)


### You should also know that...

_No response_

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Received on Monday, 20 October 2025 17:31:01 UTC