All files / lib enum-validation.ts

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export function isValidEnum<T extends readonly string[]>(
	value: string | undefined,
	allowedValues: T,
): value is T[number] {
	if (!value) return false;
	return allowedValues.includes(value as T[number]);
}
 
export function isValidEnumArray<T extends readonly string[]>(
	values: unknown,
	allowedValues: T,
): values is T[number][] {
	if (!Array.isArray(values)) return false;
	return values.every(
		(v) => typeof v === "string" && allowedValues.includes(v as T[number]),
	);
}