enum.ts
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enum.ts
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	import { Field, Context } from "../../../main";

	type Props<S> = { values: S[] \| (() => S[]) };

	export default class Enum<S> extends Field<S> {
	getTypeName = () => "enum";
	allowed_values: S[];

	setParams(params: Props<S>) {
	this.allowed_values =
	params.values instanceof Function ? params.values() : params.values;
	}

	async isProperValue(_: Context, value: S) {
	if (this.allowed_values.includes(value)) {
	return Field.valid();
	} else {
	return Field.invalid(
	"Allowed values: " + this.allowed_values.join()
	);
	}
	}
	}