chore(prettier_conformance): update Prettier to 3.8.0

[Dunqing]

https://prettier.io/blog/2026/01/14/3.8.0

It looks like this version only includes the Angular feature

[Dunqing]

• feat(oxfmt): upgrade prettier to 3.8.0 #18024
• chore(prettier_conformance): update Prettier to 3.8.0 #18023 👈 (View in Graphite)
• main

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[Copilot]

Pull request overview

This PR updates the Prettier dependency to version 3.8.0 by updating the commit SHA reference and regenerating conformance test snapshots.

Changes:

• Updated the Prettier commit SHA to version 3.8.0
• Added 2 new failing TypeScript union comment test cases to the snapshot

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
.github/scripts/clone-parallel.sh	Updated PRETTIER_SHA to point to the 3.8.0 release commit
tasks/prettier_conformance/snapshots/prettier.ts.snap.md	Updated compatibility statistics and added two new failing test cases for TypeScript union comments

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[leaysgur]

It looks like this version only includes the Angular feature

It seems so.

But if that's the case, why does the comment format differ..?

[graphite-app]

Merge activity

• Jan 15, 7:43 AM UTC: leaysgur added this pull request to the Graphite merge queue.
• Jan 15, 7:49 AM UTC: Merged by the Graphite merge queue.

[leaysgur]

Anyway, merge first.

I looked at the differences, but it seemed like a niche case.

[Dunqing]

Anyway, merge first.

I looked at the differences, but it seemed like a niche case.

Weird! I don't find any related changes from prettier/prettier@3.7.4...3.8.0

[leaysgur]

Ah, it seems these are 3.7.3 > 3.7.4 diffs.

• Fix comment in union type get duplicated prettier/prettier#18393
• Fix unstable comment print in union type prettier/prettier#18395

Our conformance was using v3.7.3 (oxfmt was using v3.7.4 tho), and this time updated to 3.7.4 -> 3.8.0.