chore: migrate to oxfmt

[logaretm]

This PR migrates our formatting tool from prettier to oxfmt which is part of the oxc toolchain and offers faster checking and format fixing speeds while maintaining the same coverage.

I created a follow up PR in #19311 to unignore a few rules and fix the associated snapshot tests affected by it.

Benchmarks

Benchmark	Prettier	oxfmt	Speedup
CI	45s	6.0s-7.0s	~5x-7.5×
Local M3 Pro	22s	1.22s-1.98s	~11×

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closes #19223

[github-actions]

Codecov Results 📊

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Generated by Codecov Action

[github-actions]

node-overhead report 🧳

Note: This is a synthetic benchmark with a minimal express app and does not necessarily reflect the real-world performance impact in an application.

Scenario	Requests/s	% of Baseline	Prev. Requests/s	Change %
GET Baseline	8,908	-	8,750	+2%
GET With Sentry	1,623	18%	1,591	+2%
GET With Sentry (error only)	6,050	68%	5,956	+2%
POST Baseline	1,134	-	1,155	-2%
POST With Sentry	582	51%	571	+2%
POST With Sentry (error only)	1,059	93%	1,036	+2%
MYSQL Baseline	3,197	-	3,207	-0%
MYSQL With Sentry	443	14%	463	-4%
MYSQL With Sentry (error only)	2,616	82%	2,577	+2%

View base workflow run

[timfish]

Particularly nice because our prettier version was so out of date!

[Copilot]

Pull request overview

This pull request migrates the codebase from Prettier to oxfmt for code formatting. Oxfmt is a Rust-based, Prettier-compatible formatter that's ~30x faster. The migration includes updating all formatting scripts, configuration files, tooling integrations (VSCode, GitHub workflows), and documentation to use oxfmt instead of Prettier.

Changes:

• Replaced Prettier with oxfmt (version 0.31.0) as the formatting tool
• Updated all npm scripts across the monorepo from fix:prettier/lint:prettier to fix:oxfmt/lint:oxfmt
• Migrated configuration from embedded package.json prettier config to .oxfmtrc.json with appropriate ignore patterns for HTML and Handlebars files

Reviewed changes

Copilot reviewed 33 out of 37 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
package.json	Removed prettier and prettier-plugin-astro dependencies; added oxfmt; updated scripts and removed embedded prettier config
yarn.lock	Added oxfmt@0.31.0 with platform-specific bindings; removed prettier-plugin-astro and related dependencies
packages/replay-internal/package.json	Updated scripts to use oxfmt instead of prettier
.oxfmtrc.json	New oxfmt configuration file with formatting rules matching previous prettier settings and ignore patterns for problematic file types
.prettierignore	Removed (replaced by ignorePatterns in .oxfmtrc.json)
.vscode/settings.json	Updated default formatter from prettier-vscode to oxc-vscode
.vscode/extensions.json	Updated recommended extension from prettier-vscode to oxc-vscode
.github/workflows/build.yml	Updated formatting check command from lint:prettier to format:check
CLAUDE.md	Updated documentation to reference oxfmt and added new format:check/format commands
.cursor/rules/sdk_development.mdc	Added format:check and format commands documentation
.editorconfig	Minor whitespace formatting fix
packages/sveltekit/test/server-common/serverRoute.test.ts	Removed redundant "type" keyword from type import
Multiple Angular component files	Reformatted inline templates to multi-line format
Multiple wrangler.jsonc files	Added trailing commas and reformatted indentation
Prisma migration lock files	Removed trailing newlines

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[Copilot]

The comment on this line still references "Prettier" but should be updated to "Oxfmt" to match the migration. The command now runs oxfmt checks instead of prettier checks.

Suggested change

	- `yarn lint` - Run ESLint and Prettier checks
	- `yarn lint` - Run ESLint and Oxfmt checks

[Copilot]

The file header comment appears to be duplicated. Lines 1-4 and lines 5-8 contain identical comments. This is likely a formatting error introduced during the migration to oxfmt.

[Copilot]

The lerna.json file was explicitly excluded in the old .prettierignore but is not included in the new .oxfmtrc.json ignorePatterns. With the trailingComma configuration set to "all", oxfmt will want to format lerna.json (adding a trailing comma after "npmClient": "yarn"), which may cause formatting check failures. Consider adding "lerna.json" to the ignorePatterns array in .oxfmtrc.json to maintain the previous behavior.

Suggested change

	"packages/ember/**/*.html"
	"packages/ember/**/*.html",
	"lerna.json"

[andreiborza]

Very nice, the fact that no formatting in packages changed is great.

[Lms24]

Thank you for taking care of this!