Deep-merge schema properties in OpenAPISchema

[nolannbiron]

Before:

After:

[linear]

RND-10064 Missing nested child properties

[changeset-bot]

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Latest commit: e4a04dd

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[github-actions]

Summary of the deployments:

Version	URL	Status
Vercel	https://gitbook-v2-jc5qkkgvs-gitbook.vercel.app	✅
Cloudflare	https://aa5eeefa-gitbook-open-v2-preview.gitbook.workers.dev	✅

Test content

Site	2v	2c
GitBook	https://gitbook-v2-jc5qkkgvs-gitbook.vercel.app/url/gitbook.com/docs	https://aa5eeefa-gitbook-open-v2-preview.gitbook.workers.dev/url/gitbook.com/docs
E2E	https://gitbook-v2-jc5qkkgvs-gitbook.vercel.app/url/gitbook.gitbook.io/test-gitbook-open	https://aa5eeefa-gitbook-open-v2-preview.gitbook.workers.dev/url/gitbook.gitbook.io/test-gitbook-open

[argos-ci]

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Build	Status	Details	Updated (UTC)
customers-v2-cloudflare (Inspect)	👍 Changes approved	7 changed	Mar 18, 2026, 12:06 PM
customers-v2-vercel (Inspect)	👍 Changes approved	6 changed	Mar 18, 2026, 12:01 PM
v2-cloudflare (Inspect)	✅ No changes detected	-	Mar 18, 2026, 12:08 PM
v2-vercel (Inspect)	👍 Changes approved	1 changed	Mar 18, 2026, 12:07 PM

[Copilot]

Pull request overview

This PR improves how allOf schema properties are combined in packages/react-openapi by deep-merging overlapping property schemas (instead of overriding), so nested object/array structures are preserved when displaying schemas.

Changes:

• Deep-merge overlapping OpenAPISchemaPropertyEntry schemas when merging properties from allOf.
• Add a recursive deepMergeSchemas helper to merge nested properties and array items.
• Add unit tests covering required-field merging and nested deep-merge behavior.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
packages/react-openapi/src/OpenAPISchema.tsx	Deep-merges overlapping schemas while collecting properties from allOf.
packages/react-openapi/src/OpenAPISchema.test.ts	Adds tests validating required handling and deep-merge behavior for nested schemas.

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