@mastra/core/dist/stream/smooth-stream.d.ts

import { TransformStream } from 'node:stream/web';
import type { ChunkType } from './types.js';
/**
 * Detects the next complete chunk at the start of a buffered string.
 *
 * @experimental This API may change in a future release.
 */
export type SmoothStreamChunkDetector = (buffer: string) => string | null | undefined;
/**
 * Options for {@link smoothStream}.
 *
 * @experimental This API may change in a future release.
 */
export interface SmoothStreamOptions {
    /**
     * Delay between emitted chunks in milliseconds. Set to `null` to emit chunks
     * without a delay.
     *
     * @default 10
     */
    delayInMs?: number | null;
    /**
     * How buffered text and reasoning are divided into chunks.
     *
     * @default 'word'
     */
    chunking?: 'word' | 'line' | RegExp | SmoothStreamChunkDetector | Intl.Segmenter;
}
/**
 * Creates a transform stream that buffers text and reasoning deltas and emits
 * them in consistent, delayed chunks. Other stream parts pass through without
 * modification after any buffered content has been emitted.
 *
 * @experimental This API may change in a future release.
 */
export declare function smoothStream<OUTPUT = undefined>({ delayInMs, chunking, }?: SmoothStreamOptions): TransformStream<ChunkType<OUTPUT>, ChunkType<OUTPUT>>;
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