import type { DshRemoteHistoryEntry } from './dsh-event-contract.js';
import type { DshRemoteTimelineNode, DshRemoteTurnProjection } from './types.js';
export interface DshRemoteTurnProjectionResult {
    turns: DshRemoteTurnProjection[];
    /** A completed Turn is never truncated. Raw HistoryEntry remains authoritative. */
    oversizedTurnRefs: string[];
    /** A retained window ending a Turn without its start cannot be projected safely. */
    unmatchedTurnEndSeqs: number[];
}
export interface DshCompletedTurnWindows {
    completed: DshRemoteHistoryEntry[][];
    pending: DshRemoteHistoryEntry[];
}
export declare function projectDshHistoryNodes(entries: DshRemoteHistoryEntry[]): DshRemoteTimelineNode[];
/**
 * Projects only explicit, stable turn/start ... turn/end intervals. Any active
 * tail stays in raw Realtime/HistoryEntry form and is deliberately excluded.
 */
export declare function projectCompletedTurns(source: Iterable<DshRemoteHistoryEntry>): DshRemoteTurnProjectionResult;
/**
 * Extracts explicit complete intervals while retaining only page-boundary
 * fragments. Pages may be supplied newest-first by prepending them to
 * [pending]; complete historical sessions therefore do not need to be held in
 * memory during Host reconciliation.
 */
export declare function extractCompletedTurnWindows(source: Iterable<DshRemoteHistoryEntry>): DshCompletedTurnWindows;
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