import { MessageProcessor, ProcessingPayload } from '@hawk.so/core';
import { BreadcrumbsOptions } from './breadcrumbs';
import { ErrorsCatcherType } from '@hawk.so/types/src/catchers/catcher-message';
/**
 * Attaches breadcrumbs to payload.
 */
export declare class BrowserBreadcrumbsMessageProcessor<T extends ErrorsCatcherType> implements MessageProcessor<T> {
    /**
     * Initialize message processor including {@link BrowserBreadcrumbStore} initialization.
     *
     * @param options {@link BrowserBreadcrumbStore} settings required for initialization.
     */
    constructor(options?: BreadcrumbsOptions);
    /**
     * Sets `payload.breadcrumbs` from snapshot if non-empty; skips otherwise.
     *
     * @param payload - event message payload to enrich
     * @returns modified payload with breadcrumbs set, or original payload unchanged
     */
    apply(payload: ProcessingPayload<T>): ProcessingPayload<T> | null;
}