perf(transformer, linter): use format_compact_str!

[overlookmotel]

Replace CompactStr::from(format!(...)) with format_compact_str!(...). This avoids creating an intermediate String.

[overlookmotel]

• perf(transformer, linter): use format_compact_str! #10753 👈 (View in Graphite)
• perf(napi/transform): do not create temp String #10752
• perf(transformer/inject_global_variables): do not search string twice #10751
• main

---

How to use the Graphite Merge Queue

Add either label to this PR to merge it via the merge queue:

• 0-merge - adds this PR to the back of the merge queue
• hotfix - for urgent hot fixes, skip the queue and merge this PR next

You must have a Graphite account in order to use the merge queue. Sign up using this link.

An organization admin has enabled the Graphite Merge Queue in this repository.

Please do not merge from GitHub as this will restart CI on PRs being processed by the merge queue.

This stack of pull requests is managed by Graphite. Learn more about stacking.

[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #10753 will not alter performance

_{Comparing 05-01-perf_transformer_linter_use_format_compact_str_ (c753f75) with main (2718f29)}

Summary

✅ 36 untouched benchmarks

[Boshen]

Merge activity

• May 1, 9:37 AM EDT: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• May 1, 9:37 AM EDT: Boshen added this pull request to the Graphite merge queue.
• May 1, 1:55 PM UTC: The Graphite merge queue couldn't merge this PR because it failed for an unknown reason.
• May 1, 10:16 AM EDT: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• May 1, 12:52 PM EDT: camc314 added this pull request to the Graphite merge queue.
• May 1, 12:52 PM EDT: Merged by the Graphite merge queue.

[coderabbitai]

"""

Walkthrough

The changes in this pull request update the way CompactStr instances are constructed in two Rust modules. In both config_builder.rs and inject_global_variables.rs, the code previously created CompactStr objects by first formatting a string with the standard format! macro and then converting the result into a CompactStr. The updated code replaces this pattern with the format_compact_str! macro, which directly creates a CompactStr from a formatted string in a single step. The import statements are updated accordingly to bring format_compact_str into scope. No changes are made to the overall logic, control flow, or public interfaces of the affected modules.

Possibly related PRs

• perf(minifier): avoid temp Strings and copying string data #10733: Both PRs optimize string construction by replacing intermediate String allocations with macros or methods that directly create compact or atomized string types.
• perf(transformer/inject_global_variables): do not search string twice #10751: Both PRs modify the construction of CompactStr in the replace_name function within inject_global_variables.rs, focusing on optimizing string replacement logic in the same function.
  """

---

📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between d69451f and c753f75.

📒 Files selected for processing (2)

• crates/oxc_linter/src/config/config_builder.rs (2 hunks)
• crates/oxc_transformer_plugins/src/inject_global_variables.rs (2 hunks)

🚧 Files skipped from review as they are similar to previous changes (2)

• crates/oxc_transformer_plugins/src/inject_global_variables.rs
• crates/oxc_linter/src/config/config_builder.rs

⏰ Context from checks skipped due to timeout of 90000ms (15)

• GitHub Check: Test NAPI
• GitHub Check: Conformance
• GitHub Check: Test wasm32-wasip1-threads
• GitHub Check: Clippy
• GitHub Check: Test (macos-latest)
• GitHub Check: Test (ubuntu-latest)
• GitHub Check: Benchmark (codegen)
• GitHub Check: Benchmark (formatter)
• GitHub Check: Benchmark (transformer)
• GitHub Check: Benchmark (minifier)
• GitHub Check: Benchmark (semantic)
• GitHub Check: Benchmark (lexer)
• GitHub Check: Benchmark (isolated_declarations)
• GitHub Check: Benchmark (parser)
• GitHub Check: Build Linter Benchmark

✨ Finishing Touches

• 📝 Generate Docstrings

---

🪧 Tips

Chat

There are 3 ways to chat with CodeRabbit:

‼️ IMPORTANT
Auto-reply has been disabled for this repository in the CodeRabbit settings. The CodeRabbit bot will not respond to your replies unless it is explicitly tagged.

• Files and specific lines of code (under the "Files changed" tab): Tag @coderabbitai in a new review comment at the desired location with your query. Examples:
  • @coderabbitai generate unit testing code for this file.
  • @coderabbitai modularize this function.
• PR comments: Tag @coderabbitai in a new PR comment to ask questions about the PR branch. For the best results, please provide a very specific query, as very limited context is provided in this mode. Examples:
  • @coderabbitai gather interesting stats about this repository and render them as a table. Additionally, render a pie chart showing the language distribution in the codebase.
  • @coderabbitai read src/utils.ts and generate unit testing code.
  • @coderabbitai read the files in the src/scheduler package and generate a class diagram using mermaid and a README in the markdown format.
  • @coderabbitai help me debug CodeRabbit configuration file.

Support

Need help? Create a ticket on our support page for assistance with any issues or questions.

Note: Be mindful of the bot's finite context window. It's strongly recommended to break down tasks such as reading entire modules into smaller chunks. For a focused discussion, use review comments to chat about specific files and their changes, instead of using the PR comments.

CodeRabbit Commands (Invoked using PR comments)

• @coderabbitai pause to pause the reviews on a PR.
• @coderabbitai resume to resume the paused reviews.
• @coderabbitai review to trigger an incremental review. This is useful when automatic reviews are disabled for the repository.
• @coderabbitai full review to do a full review from scratch and review all the files again.
• @coderabbitai summary to regenerate the summary of the PR.
• @coderabbitai generate docstrings to generate docstrings for this PR.
• @coderabbitai generate sequence diagram to generate a sequence diagram of the changes in this PR.
• @coderabbitai resolve resolve all the CodeRabbit review comments.
• @coderabbitai configuration to show the current CodeRabbit configuration for the repository.
• @coderabbitai help to get help.

Other keywords and placeholders

• Add @coderabbitai ignore anywhere in the PR description to prevent this PR from being reviewed.
• Add @coderabbitai summary to generate the high-level summary at a specific location in the PR description.
• Add @coderabbitai anywhere in the PR title to generate the title automatically.

CodeRabbit Configuration File (.coderabbit.yaml)

• You can programmatically configure CodeRabbit by adding a .coderabbit.yaml file to the root of your repository.
• Please see the configuration documentation for more information.
• If your editor has YAML language server enabled, you can add the path at the top of this file to enable auto-completion and validation: # yaml-language-server: $schema=https://coderabbit.ai/integrations/schema.v2.json

Documentation and Community

• Visit our Documentation for detailed information on how to use CodeRabbit.
• Join our Discord Community to get help, request features, and share feedback.
• Follow us on X/Twitter for updates and announcements.