import type { EventCallback } from "../types";
/** Why an event was not sent, one sentence per callback code. */
export declare const DROP_REASONS: {
    readonly suppressed: "tracking is off for this visitor, environment, or chain";
    readonly duplicate: "an identical event was already accepted";
    readonly consent_withdrawn: "consent was withdrawn before delivery";
    readonly closed: "the SDK was cleaned up before delivery";
    readonly blocked: "the address is blocked";
    readonly invalid_key: "the idempotency_key must be a non-empty string or a safe integer";
    readonly invalid: "the call carried a missing or invalid address or chain";
};
export type DropCode = keyof typeof DROP_REASONS;
/** The error handed to the callback of a dropped event. */
export declare function dropError(code: DropCode): Error & {
    code: DropCode;
};
/** Answer a callback for a dropped event; silence would read as success. */
export declare function answerDropped(callback: EventCallback | undefined, message: unknown, code: DropCode): void;
//# sourceMappingURL=dropped.d.ts.map