/**
 * Base class for all Zapier SDK signals.
 *
 * Signals are intentional control-flow throws — the user is signaling
 * intent to the SDK runtime, not reporting a failure. For example, a
 * callback throwing `ZapierReleaseTriggerMessageSignal` tells
 * `drainTriggerInbox` to release the message immediately rather than
 * leave it leased.
 *
 * Distinct from `ZapierError` (failures): signals are not errors and
 * shouldn't be caught by error-handling code via `instanceof
 * ZapierError`. Use `instanceof ZapierSignal` to discriminate intent
 * throws from real failures.
 */
export declare abstract class ZapierSignal extends Error {
    abstract readonly name: string;
    abstract readonly code: string;
    constructor(message?: string);
}
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