/**
 * What an API call throws when the server did not answer with a success.
 *
 * One error class for every JSON route rather than a result type per method: the status is
 * what a caller branches on, and it is carried here alongside whatever the server said, so
 * "the job was already finished" (409) and "no job of yours has that id" (404) are told apart
 * without parsing a message. `body` is the parsed response when there was one, so a 409 on a
 * cancel still hands back the job, and a 409 on an answer still hands back the delivery.
 */
export declare class ButlerBotAPIError extends Error {
    /** The HTTP status the server answered with, or 0 when the call never got a response. */
    readonly status: number;
    readonly statusText: string;
    /** The server's short `error`, e.g. "Already finished". */
    readonly error?: string;
    /** The server's `errormessage`: the same thing in a sentence. */
    readonly errormessage?: string;
    /** The parsed response body, or the raw text when it was not JSON. */
    readonly body: unknown;
    constructor(options: {
        action: string;
        status: number;
        statusText?: string;
        error?: string;
        errormessage?: string;
        body?: unknown;
    });
    /** The resource is not there, or is not this key's. The two are answered alike on purpose. */
    get isNotFound(): boolean;
    /** Somebody got there first: the job had finished, or the delivery was already answered. */
    get isConflict(): boolean;
    /** The request itself was refused: a value the server would not take. */
    get isBadRequest(): boolean;
}