fix: handle windows paths in umd-to-esm

[RYGRIT]

The previous replacement only matched /umd/, so Windows paths were not converted to the ESM entry. This caused the built language server to load the wrong jsonc-parser bundle and fail at startup.

[coderabbitai]

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ℹ️ Recent review info

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Configuration used: Organization UI

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Run ID: 8a2c8b43-59d5-413b-8f2f-e30705472692

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Reviewing files that changed from the base of the PR and between a269e87 and 5ca8f8c.

📒 Files selected for processing (1)

• plugins/umd-to-esm.ts

🚧 Files skipped from review as they are similar to previous changes (1)

• plugins/umd-to-esm.ts

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📝 Walkthrough

Walkthrough

The plugin’s UMD→ESM path rewriting was refactored to use a new exported helper toEsmPath(resolvedModulePath: string) that replaces the /umd/ segment via a cross‑platform regex (/[/\\]umd[/\\]/) and maps it to esm. Module resolution now computes resolvedModulePath with require.resolve(source) and derives id from toEsmPath(...) instead of an inline string replace. createRequire now uses importer ?? import.meta.url as its argument.

🚥 Pre-merge checks | ✅ 1

✅ Passed checks (1 passed)

Check name	Status	Explanation
Description check	✅ Passed	The pull request description accurately describes the core issue being fixed: handling Windows paths in the UMD-to-ESM conversion by using cross-platform regex matching instead of hardcoded forward slashes.

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✨ Finishing Touches

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[coderabbitai]

Actionable comments posted: 1

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 700d15a1-4a58-46fe-af70-cd185d24a28f

📥 Commits

Reviewing files that changed from the base of the PR and between 0d92ae7 and a269e87.

📒 Files selected for processing (1)

• plugins/umd-to-esm.ts