import { CMR, CMRConstructorParams } from './CMR';
/**
 * Shim to correctly add a default provider_short_name to the input searchParams
 */
export declare const providerParams: ({ searchParams, provider, }: {
    searchParams?: URLSearchParams | undefined;
    provider: string;
}) => URLSearchParams;
export interface CMRSearchConceptQueueConstructorParams {
    cmrSettings: CMRConstructorParams;
    provider: string;
    type: string;
    searchParams?: URLSearchParams;
    format?: string;
}
/**
 * A class to efficiently list all of the concepts (collections/granules) from
 * CMR search, without loading them all into memory at once.  Handles paging.
 *
 * @typicalname cmrSearchConceptQueue
 *
 * @example
 * const { CMRSearchConceptQueue } = require('@cumulus/cmr-client');
 *
 * const cmrSearchConceptQueue = new CMRSearchConceptQueue({
 *   provider: 'my-provider',
 *   clientId: 'my-clientId',
 *   type: 'granule',
 *   searchParams: {},
 *   format: 'json'
 * });
 */
export declare class CMRSearchConceptQueue<T> {
    type: string;
    params: URLSearchParams;
    format?: string;
    items: (T | null)[];
    CMR: CMR;
    /**
     * The constructor for the CMRSearchConceptQueue class
     *
     * @param {Object} params
     * @param {Object} params.cmrSettings - the CMR settings for the requests - the provider,
     * clientId, and either launchpad token or EDL username and password
     * @param {string} params.type - the type of search 'granule' or 'collection'
     * @param {URLSearchParams} [params.searchParams={}] - the search parameters
     * @param {string} params.format - the result format
     */
    constructor(params: CMRSearchConceptQueueConstructorParams);
    /**
     * View the next item in the queue
     *
     * This does not remove the object from the queue.  When there are no more
     * items in the queue, returns 'null'.
     *
     */
    peek(): Promise<T | null>;
    /**
     * Remove the next item from the queue
     *
     * When there are no more items in the queue, returns `null`.
     */
    shift(): Promise<T | null>;
    /**
     * Query the CMR API to get the next batch of items
     *
     * @returns {Promise<undefined>} resolves when the queue has been updated
     * @private
     */
    fetchItems(): Promise<void>;
}
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