/** A generic error that is caused by some aspect of the cancellation feature. */
export declare abstract class CancelError extends Error {
    name: string;
}
/** Rejected when a consumer is added to a cancelled Rhodium. */
export declare class CannotAttachConsumerError extends CancelError {
    name: string;
}
/** Rejected when a non-last Rhodium of its chain is attempted to be cancelled. */
export declare class CannotBeCancelledError extends CancelError {
    name: string;
}