/**
 * Bounded SSE line parser for the inline wire path. Handles `event:` and
 * `data:` fields, multi-line data, CRLF, comments, and trailing events
 * without a final blank line; unknown fields are ignored and oversized
 * individual events are rejected.
 * @module dsh-github-copilot/sse
 */
/** Upper bound on one incomplete SSE event, in bytes. */
export declare const MAX_SSE_EVENT_BYTES: number;
/** Stable error raised when one incomplete SSE event exceeds its byte bound. */
export declare class SseEventSizeError extends Error {
    readonly limit: number;
    constructor();
}
/** One parsed SSE event; `type` falls back to `message`. */
export interface SseEvent {
    readonly type: string;
    readonly data: unknown;
}
/**
 * Parse an SSE byte stream into typed events.
 * @param body - the response body stream.
 * @returns an async generator of parsed events.
 * @throws on invalid JSON or when one event exceeds
 * {@link MAX_SSE_EVENT_BYTES}.
 */
export declare function parseSse(body: ReadableStream<Uint8Array>): AsyncGenerator<SseEvent>;
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