export interface CompactionSourceText {
    text: string;
    seq: number;
    entryId: string;
}
export interface HandoverChunk {
    text: string;
    sourceThroughSeq: number;
}
export interface CompactionChunkCursorState {
    index: number;
    offset: number;
}
/** Consume source text in order, fitting each chunk against the current ledger. */
export declare class CompactionChunkCursor {
    private readonly sources;
    private index;
    private offset;
    constructor(sources: readonly CompactionSourceText[], state?: CompactionChunkCursorState);
    get done(): boolean;
    checkpoint(): CompactionChunkCursorState;
    next(maxTokens: number, fits: (text: string) => boolean): HandoverChunk;
}