Certain schemas to define a record's keys are discarded about zod-to-json-schema

[StefanTerdell]

Back again!

🥳

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Here's the block checking for propertyNames compatibility:

zod-to-json-schema/src/parsers/record.ts

Lines 62 to 84 in 3e7c648

	if (
	def.keyType?._def.typeName === ZodFirstPartyTypeKind.ZodString &&
	def.keyType._def.checks?.length
	) {
	const keyType: JsonSchema7RecordPropertyNamesType = Object.entries(
	parseStringDef(def.keyType._def, refs),
	).reduce(
	(acc, [key, value]) => (key === "type" ? acc : { ...acc, [key]: value }),
	{},
	);
	return {
	...schema,
	propertyNames: keyType,
	};
	} else if (def.keyType?._def.typeName === ZodFirstPartyTypeKind.ZodEnum) {
	return {
	...schema,
	propertyNames: {
	enum: def.keyType._def.values,
	},
	};
	}

Adding your requirements here should do the trick. It could also use a general clean up, but the idea of ignoring any output that isn't a string is still sound as it follows spec (from what I can remember anyway).

"type": "string" is implicit in the root, that's why it's (clumsily) removed. "anyOf"'s with "type" should be fine though as per your example.