import { type RequestConfig } from './types';
import { BaseEventSource } from './base';
/**
 * Process streaming requests for WeChat Mini Program
 */
export declare class EventSource extends BaseEventSource {
    private options;
    private task?;
    private isAborted;
    private cacheChunk;
    constructor(options: RequestConfig);
    start(): void;
    abort(): void;
    private onHeadersReceived;
    private onChunkReceived;
    private safeParseJSON;
}