import { EventSpecResponse } from "./AvoEventSpecFetchTypes";
type FetchCallback = (result: EventSpecResponse | null) => void;
export declare class AvoEventSpecFetcher {
    private apiKey;
    private inFlight;
    private agent;
    private static specEndpoint;
    constructor(apiKey: string);
    fetch(eventName: string, streamId: string, callback: FetchCallback): void;
    private resolveCallbacks;
    /**
     * Parse the wire format from /trackingPlan/eventSpec into our internal types.
     *
     * Wire format:
     *   { events: [{ b, id, vids, p: { "PropName": { t: "string", r: true, v: {...}, rx: {...} } } }],
     *     metadata: { schemaId, branchId, latestActionId, sourceId } }
     *
     * Internal format:
     *   { eventSpec: { eventName, properties: [{ propertyName, propertyType, regex? }] } | null,
     *     metadata: { schemaId, branchId, latestActionId, sourceId } }
     */
    static parseWireResponse(wire: any, eventName: string): EventSpecResponse;
    destroy(): void;
}
export {};