Valibotのbrandを外から与えられるようにする

export interface BrandAction<TInput, Brand extends TInput>
	extends BaseTransformation<TInput, Brand, never> {
	/**
	 * The action type.
	 */
	readonly type: "branded";
	/**
	 * The action reference.
	 */
	readonly reference: typeof branded;
}

export function branded<TInput, Brand extends TInput>(
	brandOf: Brand,
): BrandAction<TInput, Brand> {
	return {
		kind: "transformation",
		type: "branded",
		reference: branded,
		async: false,
		"~run"(dataset) {
			return dataset as SuccessDataset<Brand>;
		},
	};
}

function brandOf<T>(): T {
	return undefined as T;
}

type X = Tagged<string, "X">;

import * as v from "valibot";

const XSchema = v.pipe(v.string(), branded(brandOf<X>()));

type Output = v.InferOutput<typeof XSchema>;