import { type ByteRecord, type FileSplitDelimiter } from './split-records.js';
export type ByteSlice = {
    start: number;
    content: Buffer;
};
export type GroupRecordsOptions = {
    delimiter: FileSplitDelimiter;
    every?: number;
    encoding?: BufferEncoding;
};
export declare function groupRecords(source: AsyncIterable<ByteRecord>, { delimiter, every, encoding }: GroupRecordsOptions): AsyncGenerator<ByteSlice>;
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