import type { SseFetchEventSourceParams } from './streams.types.js';
export declare const EVENT_STREAM_CONTENT_TYPE = "text/event-stream";
export declare const JSON_CONTENT_TYPE = "application/json";
/**
 * Native implementation of an SSE
 */
export declare function fetchEventSource(input: string, { abortController, headers, onOpen, onMessage, onClose, onError, resumeFrom, ...rest }: SseFetchEventSourceParams): void;
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