import type { TransformTyped } from '../stream.model.js';
/**
 * Transforms input Buffer/string stream into Buffer chunks (objectMode: true) split by newLine.
 *
 * Useful for reading NDJSON files from fs.
 *
 * Same as binarySplit, but optimized (hard-coded) to split on NEWLINE (aka `\n`).
 * (+5-10% _pipeline speedup measured, compared to generic `binarySplit` on variable length delimiter)
 */
export declare function transformSplitOnNewline(): TransformTyped<Buffer, Buffer>;
/**
 * Input: stream (objectMode=false) of arbitrary string|Buffer chunks, like when read from fs
 * Output: stream (objectMode=true) or string|Buffer chunks split by `separator` (@default to `\n`)
 *
 * Please use slightly more optimized `transformSplitOnNewline` for NDJSON file parsing.
 * (+5-10% _pipeline speedup measured!)
 */
export declare function transformSplit(separator?: string): TransformTyped<Buffer, Buffer>;