refactor(oxfmt/migrate-biome): Borrow tiny-jsonc implementation

[leaysgur]

Follow up on #18638

Replace JSONC parse logic with tiny-jsonc.

[leaysgur]

• refactor(oxfmt): Ensure to destroy worker pool before exit #18689
• fix(formatter,oxfmt): Handle CRLF with embedded formatting #18686
• refactor(oxfmt/migrate-biome): Borrow tiny-jsonc implementation #18684 👈 (View in Graphite)
• 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.

[Copilot]

Pull request overview

This PR refactors the JSONC parsing implementation in the Biome configuration migration tool by replacing a custom stripJsonComments function with a more concise regex-based implementation borrowed from the tiny-jsonc library.

Changes:

• Replaced custom stripJsonComments implementation with a borrowed parseJSONC function from tiny-jsonc
• Added proper source attribution with commit SHA reference
• Marked unused formatterConfig parameter with underscore prefix

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[graphite-app]

Merge activity

• Jan 29, 8:18 AM UTC: leaysgur added this pull request to the Graphite merge queue.
• Jan 29, 8:25 AM UTC: Merged by the Graphite merge queue.