feat: add support for const keyword#133
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HiDeoo merged 3 commits intoHiDeoo:mainfrom Jan 16, 2026
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HiDeoo
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Jan 16, 2026
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HiDeoo
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HiDeoo
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Thanks for the PR 🙌
I took the liberty of adding one small test and a changeset so we can ship the change immediately.
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Describe the pull request
Add support for the const keyword available in OpenAPI 3.1.0. When a schema defines const, it now displays the allowed value with an "Allowed value:" label.
Why
OpenAPI 3.1.0 is a superset of JSON Schema Draft 2020-12 and supports the const keyword (OpenAPI 3.1.0 Specification). The const keyword indicates that a value must be exactly equal to a specified constant value (JSON Schema Draft 2020-12).
Previously, starlight-openapi ignored the const keyword, so the allowed value was not displayed in the documentation.
How
Added const property to the Items type
Implemented display of "Allowed value:" tag in Items.astro component when const is present
Uses a consistent UI pattern with the existing enum display ("Allowed values:")
Screenshots
N/A