/**
 * Observable wrapper around the pure transcript reducer (V2-050).
 *
 * The only side effect this store performs is notifying subscribers; state
 * transitions themselves stay in `applyAppEvent` so they remain replayable
 * and unit-testable without a subscriber. Components read state through
 * `getState`/`subscribe` (a `useSyncExternalStore` source), never by reaching
 * into reducer internals.
 */
import type { AnyAppEvent } from "../../app/events/app-event.js";
import type { TranscriptItem as ClassicTranscriptItem } from "../../app/ports/transcript-item.js";
import { type TranscriptState } from "./transcript-types.js";
export type TranscriptListener = () => void;
export declare class TranscriptStore {
    private readonly maxItems;
    private readonly coalesceMs;
    private state;
    private readonly listeners;
    private notifyTimer;
    private notifyPending;
    private persistBase;
    private persistHydratedIds;
    private static readonly COALESCED_EVENT_TYPES;
    constructor(maxItems?: number, coalesceMs?: number);
    getState(): TranscriptState;
    dispatch(event: AnyAppEvent): void;
    /** CHAT-006: Ctrl+T toggles every thinking block's default visibility. */
    toggleThinkingGlobal(): void;
    /** CHAT-005/007: Ctrl+O toggles tool OUTPUT + compacted memory cards. */
    toggleOutputGlobal(): void;
    /** Expand/collapse every tool OUTPUT card at once (collapse all / expand
     *  all chips). Clears only tool/compacted per-item overrides so thinking
     *  overrides survive. */
    setOutputGlobal(expanded: boolean): void;
    /** Expand/collapse every file-diff card in chat (hunks vs title-only). */
    setFileDiffsGlobal(expanded: boolean): void;
    toggleFileDiffsGlobal(): void;
    /** Expand/collapse one tool's file-diff body. */
    toggleFileDiffOverride(toolItemId: string, fallback: boolean): void;
    /** Expand/collapse one item, overriding whichever global toggle applies. */
    toggleItemOverride(id: string, fallback: boolean): void;
    subscribe(listener: TranscriptListener): () => void;
    reset(): void;
    /**
     * Replace the entire visual transcript (used by /history resume).
     * Preserves global expand toggles so user prefs survive a session switch.
     * `rebaseSequence: false` keeps the live sequence clock (in-session restores
     * must never rewind it, or the next sequencer event arrives as a gap).
     */
    hydrate(next: TranscriptState, options?: {
        readonly rebaseSequence?: boolean;
        readonly persistBase?: readonly ClassicTranscriptItem[] | undefined;
    } | undefined): void;
    mergePersistSnapshot(items: ClassicTranscriptItem[]): ClassicTranscriptItem[];
    private setState;
    private applyState;
    private scheduleNotify;
    private flushNotify;
}