/**
 * Canonical SSE line-buffer, handles both LF (\n) and CRLF (\r\n) line endings.
 * Standardised on /\r?\n/ per RFC 7230 and the W3C SSE spec.
 */
export declare class SseLineBuffer {
    private readonly decoder;
    private buffer;
    /** Feed a raw chunk and return all complete lines (without line endings). */
    feed(chunk: Uint8Array): string[];
    /** Return any buffered incomplete line after the stream ends. */
    flush(): string[];
}
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