chore(bson-parsing): integration with compass

[mabaasit]

Description

Open Questions

Checklist

• I have signed the Contributor License Agreement (https://www.mongodb.com/legal/contributor-agreement)
• New tests and/or benchmarks are included
• Documentation is changed or added

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[Copilot]

Copilot review overview

🟡 Changes recommended

The test imports named exports from a worker file that Webpack overwrites with a non-exporting IIFE bundle.

Review effort: Balanced
Findings: 1

Open (1)

• Webpack overwrites worker module, breaking named exports in tests · New

What changed in this PR

Updates the BSON parser worker for Compass compatibility while preserving parser error types.

Changes:

• Renames worker artifacts to .mjs.
• Transfers Error objects across the worker boundary.
• Adds error-type preservation coverage.

File	Description
webpack.worker.config.cjs	Bundles the worker as worker.mjs.
src/​worker.mts	Returns parser errors directly.
src/​worker-types.ts	Types worker failures as Error.
src/​worker-client.ts	Loads .mjs and rejects with transferred errors.
src/​index.spec.ts	Updates worker paths and tests error preservation.

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