/**
 * True when the failure is SQLite's UNIQUE constraint. Drizzle wraps driver
 * errors, so the libsql error sits at some depth of the `cause` chain.
 */
export function isUniqueViolation(error: unknown): boolean {
	let current: unknown = error;
	while (current instanceof Error) {
		if ('code' in current && current.code === 'SQLITE_CONSTRAINT_UNIQUE')
			return true;
		current = current.cause;
	}
	return false;
}