Can't get instance to work

[ma-r-s]

I'm currently migrating from zod to valibot but haven't been able to get instance to work.

Here is the original Zod code:

pictures: z
.instanceof(File, { message: 'Please upload a file.' })
.array()
.refine((files) => files.length !== 0, 'At least one image is required')
.refine(
	(files) => files.length <= MAX_NUM_PICTURES,
	`Maximum number of pictures is ${MAX_NUM_PICTURES}`
)
.refine(
	(files) => files.every((f) => sizeInMB(f.size) <= MAX_IMAGE_SIZE),
	'Max 4MB upload size.'
)
.refine(
	(files) => files.every((f) => ACCEPTED_IMAGE_TYPES.includes(f.type)),
	'Unsupported file type.'
)

And here is my attempted translation to Valibot:

pictures: array(
	instance(File, '', [
		mimeType(ACCEPTED_IMAGE_TYPES, 'Unsupported file type.'),
		custom((file) => sizeInMB(file.size) <= MAX_IMAGE_SIZE, 'Max 4MB upload size.')
	]),
	[
		custom((files) => files.length !== 0, 'At least one image is required'),
		custom(
			(files) => files.length <= MAX_NUM_PICTURES,
			`Maximum number of pictures is ${MAX_NUM_PICTURES}`
		)
	]
)

I get the following error

Error: Unsupported valibot schema: instance
    at assert (file:///C:/Users/mario/Escritorio/Unihouse/node_modules/@gcornut/valibot-json-schema/dist/index.mjs:21:11)
    at converter (file:///C:/Users/mario/Escritorio/Unihouse/node_modules/@gcornut/valibot-json-schema/dist/index.mjs:226:5)
    at object (file:///C:/Users/mario/Escritorio/Unihouse/node_modules/@gcornut/valibot-json-schema/dist/index.mjs:124:29)
    at converter (file:///C:/Users/mario/Escritorio/Unihouse/node_modules/@gcornut/valibot-json-schema/dist/index.mjs:227:23)
    at Module.toJSONSchema (file:///C:/Users/mario/Escritorio/Unihouse/node_modules/@gcornut/valibot-json-schema/dist/index.mjs:248:35)
    at valibotToJSONSchema (C:\Users\mario\Escritorio\Unihouse\node_modules\sveltekit-superforms\dist\adapters\valibot.js:13:12)
    at _valibot (C:\Users\mario\Escritorio\Unihouse\node_modules\sveltekit-superforms\dist\adapters\valibot.js:36:44)
    at Module.memoized (C:\Users\mario\Escritorio\Unihouse\node_modules\memoize-weak\lib\memoize.js:79:20)
    at load (C:\Users\mario\Escritorio\Unihouse\src\routes\(app)\publish\new\+page.server.js:12:29)
    at Module.load_server_data (C:\Users\mario\Escritorio\Unihouse\node_modules\@sveltejs\kit\src\runtime\server\page\load_data.js:61:41)

I've also tried a simpler test directly from the Valibot documentation:

pictures: instance(File, [
  mimeType(['image/jpeg', 'image/png']),
  maxSize(1024 * 1024 * 10),
]);

However, all attempts result in the same error. I even tried using just instance(File).

I'd appreciate any insights or assistance in resolving this issue. Thank you!

[fabian-hiller]

Thank you creating this issue. It seems that this error is not related to Valibot. It is related to valibot-json-schema. Please create an issue there. Feel free to link me.