/**
 * Streaming iteration over a window.
 *
 * Layer 7. `readWindow` returns every chunk at once, which is right for a window you are about to
 * draw and wrong for a whole recording: the array holds every sample the window covers, so a
 * twelve-hour pass costs twelve hours of memory.
 *
 * A pipeline wants the opposite — one bounded piece at a time, with the previous one collectable.
 * That is spelled `for await`, and doing it by hand means reimplementing the record arithmetic and
 * the gap handling that `readWindow` already owns.
 *
 * Chunks arrive in time order, never span a gap, and carry the same `precededByGap` a
 * `readWindow` chunk would, so a consumer sees the discontinuities rather than a smooth lie.
 */
import type { EdfChunk, EdfRecording, ReadOptions, StreamSelection } from './types.js';
/**
 * Yields a window one bounded chunk at a time.
 *
 * `chunkRecords` is the unit of I/O and of memory: each yielded chunk holds that many records of
 * the requested signals and no more. It is a count of records rather than of bytes or seconds
 * because the record is the only unit every signal in an EDF file shares — signals may sample at
 * different rates, so "a second of data" is a different number of samples per channel.
 */
export declare function streamRecords(recording: EdfRecording, selection: StreamSelection, options?: ReadOptions): AsyncGenerator<EdfChunk, void, undefined>;
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