fix: filter out new keys from legacy JSON generator

[aduh95]

Description

Validation

Related Issues

Check List

• I have read the Contributing Guidelines and made commit messages that follow the guideline.
• I have run node --run test and all tests passed.
• I have check code formatting with node --run format & node --run lint.
• I've covered new added functionality with unit tests if necessary.

[vercel]

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Project	Deployment	Actions	Updated (UTC)
api-docs-tooling	Ready	Preview	Feb 7, 2026 10:24pm

[codecov]

Codecov Report

❌ Patch coverage is 20.37037% with 43 lines in your changes missing coverage. Please review.
✅ Project coverage is 80.57%. Comparing base (07a57f8) to head (c231947).
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
src/utils/generators.mjs	16.32%	41 Missing ⚠️
src/generators/legacy-json-all/index.mjs	66.66%	1 Missing ⚠️
src/generators/legacy-json/index.mjs	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #595      +/-   ##
==========================================
- Coverage   80.80%   80.57%   -0.24%     
==========================================
  Files         126      126              
  Lines       12073    12121      +48     
  Branches      874      874              
==========================================
+ Hits         9756     9766      +10     
- Misses       2314     2352      +38     
  Partials        3        3              

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[Copilot]

Pull request overview

This PR updates the legacy-json generator to emit “legacy-compatible” JSON by filtering the serialized output to a specific allowlist of keys, aiming to prevent newly introduced fields from appearing in generated legacy JSON files.

Changes:

• Replaces JSON.stringify(section, null, 2) with JSON.stringify(section, [allowedKeys...], 2) to filter output keys.
• Conditionally includes the modules key for non-index sections during serialization.

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[github-actions]

orama-db Generator

File	Base	Head	Diff
orama-db.json	8.03 MB	8.03 MB	-3.00 B (-0.00%)

[avivkeller]

I don't love this kind of hard-coding, but if it'll get the tooling merged into core, I'm willing to deal with it.

cc @ovflowd @flakey5

[ovflowd]

Let's wait for the TSC meeting.

[ovflowd]

To be clear, not against the PR, just want to want for the TSC meeting before we make any decisions on the approach.