refactor(oxfmt/lsp): move lsp code to apps/oxfmt, remove lsp formatter feature flag

[Sysix]

This PR refactors the LSP formatter code by moving it from crates/oxc_language_server to apps/oxfmt, removing the formatter feature flag from the language server crate.

This is now possible, because oxc_language_server is not anymore shipped #17457

[Sysix]

• refactor(oxlint/lsp): move lsp code to apps/oxlint, remove lsp linter feature flag #17463
• refactor(oxfmt/lsp): move lsp code to apps/oxfmt, remove lsp formatter feature flag #17462 👈 (View in Graphite)
• main

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[codspeed-hq]

CodSpeed Performance Report

Merging #17462 will not alter performance

_{Comparing 12-29-refactor_oxfmt_lsp_move_lsp_code_to_apps_oxfmt_remove_lsp_formatter_feature_flag (d404ffa) with main (797c4bb)¹}

Summary

✅ 42 untouched
⏩ 3 skipped²

Footnotes

1. No successful run was found on main (ef619a2) during the generation of this report, so 797c4bb was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

2. 3 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[Copilot]

Pull request overview

This PR refactors the LSP formatter code by moving it from crates/oxc_language_server to apps/oxfmt, removing the formatter feature flag from the language server crate.

Key Changes:

• Moves formatter LSP implementation from oxc_language_server to apps/oxfmt/src/lsp
• Removes the formatter feature flag and associated dependencies from oxc_language_server
• Migrates test fixtures and snapshots to apps/oxfmt/test/fixtures/lsp/

Reviewed changes

Copilot reviewed 13 out of 27 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
crates/oxc_language_server/src/main.rs	Removes formatter builder registration (previously behind feature flag)
crates/oxc_language_server/src/lib.rs	Removes formatter module, exports Capabilities and makes utils public for external use
crates/oxc_language_server/src/formatter/mod.rs	Deleted - entire formatter module removed
crates/oxc_language_server/Cargo.toml	Removes formatter feature and related dependencies (oxc_formatter, oxc_parser, json-strip-comments)
apps/oxfmt/src/lsp/mod.rs	New LSP module entry point with run_lsp() function and formatter constants
apps/oxfmt/src/lsp/server_formatter.rs	Formatter LSP implementation moved from oxc_language_server with updated imports
apps/oxfmt/src/lsp/options.rs	New file containing formatter options configuration
apps/oxfmt/src/lsp/tester.rs	Test utilities with updated import paths
apps/oxfmt/test/fixtures/lsp/*	New test fixtures for LSP functionality (basic, root_config, custom_config_path, ignore-file, ignore-pattern)
apps/oxfmt/src/lsp/snapshots/*	Updated test snapshots with corrected source paths and file locations
apps/oxfmt/Cargo.toml	Adds necessary dependencies (oxc_data_structures, log, serde, tower-lsp-server, insta) and removes formatter feature from oxc_language_server dependency
Cargo.lock	Reflects dependency changes across both crates

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[Boshen]

Merge activity

• Dec 30, 2:17 AM UTC: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• Dec 30, 2:17 AM UTC: Boshen added this pull request to the Graphite merge queue.
• Dec 30, 2:29 AM UTC: Merged by the Graphite merge queue.