Add minProperties/maxProperties

[muningis]

Add these validation actions:

• Max Properties - used by looseObject(), object(), record()andstrictObject()` schemas to validate maximum amount of properties on an object, based on maxProperties from JSON Schema (https://json-schema.org/understanding-json-schema/reference/object#size)
• Min Properties - used by looseObject(), object(), record()andstrictObject()` schemas to validate minimum amount of properties on an object, based on minProperties from JSON Schema (https://json-schema.org/understanding-json-schema/reference/object#size)

Update website with said actions

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
valibot	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Mar 30, 2025 4:13am

[fabian-hiller]

Thank you for creating this PR! Please group only related actions into a single PR, as in these cases the isoDuration action may block the other actions to be merged as its regex seems a bit more complicated to review.

I think I would rename minProperties to minProps and maxProperties to maxProps. What do you think?

[muningis]

Split them and renamed.

[fabian-hiller]

I will try to review and merge this PR next week.

[pkg-pr-new]

Open in Stackblitz

npm i https://pkg.pr.new/valibot@1100

commit: e6f7921

[muningis]

np, take your time.

[Copilot]

Pull Request Overview

This pull request adds new minProperties and maxProperties validation actions in both the website and library packages to support JSON Schema validation of object property counts.

• Implements minProperties and maxProperties actions along with their corresponding issue and error message types.
• Introduces new property configuration files for the website API routes and comprehensive tests (including type tests) in the library.
• Updates the actions index to export the new actions.

Reviewed Changes

Copilot reviewed 22 out of 31 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
website/src/routes/api/(actions)/minProps/properties.ts	Defines minProps action properties for the website API.
website/src/routes/api/(actions)/maxProps/properties.ts	Defines maxProps action properties for the website API.
library/src/actions/minProps/minProps.ts	Implements the minProps validation action and its types.
library/src/actions/minProps/minProps.test.ts	Adds runtime tests for the minProps action.
library/src/actions/minProps/minProps.test-d.ts	Adds TypeScript tests for the minProps action types.
library/src/actions/minProps/index.ts	Exports the minProps action.
library/src/actions/maxProps/maxProps.ts	Implements the maxProps validation action and its types.
library/src/actions/maxProps/maxProps.test.ts	Adds runtime tests for the maxProps action.
library/src/actions/maxProps/maxProps.test-d.ts	Adds TypeScript tests for the maxProps action types.
library/src/actions/maxProps/index.ts	Exports the maxProps action.
library/src/actions/index.ts	Updates the actions index to include new minProps and maxProps exports.

Files not reviewed (9)

• website/src/routes/api/(actions)/maxProps/index.mdx: Language not supported
• website/src/routes/api/(actions)/minProps/index.mdx: Language not supported
• website/src/routes/api/(async)/pipeAsync/index.mdx: Language not supported
• website/src/routes/api/(methods)/pipe/index.mdx: Language not supported
• website/src/routes/api/(schemas)/looseObject/index.mdx: Language not supported
• website/src/routes/api/(schemas)/object/index.mdx: Language not supported
• website/src/routes/api/(schemas)/objectWithRest/index.mdx: Language not supported
• website/src/routes/api/(schemas)/record/index.mdx: Language not supported
• website/src/routes/api/(schemas)/strictObject/index.mdx: Language not supported

Comments suppressed due to low confidence (2)

library/src/actions/minProps/minProps.test.ts:31

• [nitpick] The error message 'item should contain at least two items' might be misleading in this context. Consider revising it to reference 'properties' instead of 'items' to more clearly match the minProperties validation.

expect(minProps(2, 'item should contain at least two items')).toStrictEqual({

library/src/actions/maxProps/maxProps.test.ts:31

• [nitpick] The error message 'item should contain at least two items' may not accurately describe a maximum properties condition. Consider updating it to clearly refer to 'properties' rather than 'items'.

expect(maxProps(2, 'item should contain at least two items')).toStrictEqual({

[fabian-hiller]

Thanks for the PR! Your code looks good. I will just do some minor refactoring. I will finish and merge it soon.

[fabian-hiller]

Valibot v1.1.0 is available!

[fabian-hiller]

v1.1.0 of toJsonSchema is available