[to-json-schema] "min_value" action is not supported on type "integer"

[stefanprobst]

continued from discussion in #1338

i see a The "min_value" action is not supported on type "integer" warning when transforming the following schema - although the json schema output looks ok to me:

import { toJsonSchema } from "@valibot/to-json-schema";
import * as v from "valibot";

const schema = v.pipe(v.number(), v.integer(), v.minValue(1));

console.log(toJsonSchema(schema, { errorMode: "warn" }));

Output:

The "min_value" action is not supported on type "integer".
{
  '$schema': 'http://json-schema.org/draft-07/schema#',
  type: 'integer',
  minimum: 1
}

[dosubot]

The warning "min_value" action is not supported on type "integer" is a known bug in the current version of @valibot/to-json-schema—the maintainer has acknowledged it and plans to fix it in a future release. Despite the warning, the generated JSON Schema output is correct (type: 'integer', minimum: 1) and matches what you'd expect for this schema, so you can safely ignore the warning for now if the output meets your needs [discussion #1338].

If you want to suppress or work around the warning, you can use the override config in toJsonSchema as described in the package README. There are also ongoing discussions about adding options to control warning behavior (like 'throw', 'warn', or 'ignore') [issue #889].

The warning is triggered by a specific check in the converter logic for the minValue action on integer types, even though the conversion itself works as expected. No action is needed unless the warning is disruptive to your workflow.

To reply, just mention @dosu.

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[fabian-hiller]

Thank you for creating this issue. I probably just forgot to allow integers besides numbers. I think this is the line we need to fix:

valibot/packages/to-json-schema/src/converters/convertAction/convertAction.ts

Line 294 in f7c4dad

if (jsonSchema.type !== 'number') {