import type { GitClient } from "../ports/git.js";
import type { FileSystem } from "../ports/filesystem.js";
import type { RepoObservation } from "./repo-state-types.js";
export type { WorldlineLayer, RepoTransitionKind, RepoSemanticTransitionKind, RepoSemanticTransitionAuthority, RepoSemanticTransitionPhase, RepoTransition, RepoSemanticTransition, WorkspaceOverlaySummary, RepoObservation, } from "./repo-state-types.js";
export declare class RepoStateTracker {
    private readonly cwd;
    private readonly fs;
    private readonly gitClient;
    private checkoutEpoch;
    private snapshot;
    private observation;
    private initialization;
    private readonly startedAtSec;
    private hasObservedTransition;
    /** Pending observe promise used for debounce coalescing. */
    private pendingObserve;
    /** Timestamp of the last completed observation (ms since epoch). */
    private lastObservedAtMs;
    private readonly debounceMs;
    constructor(cwd: string, fs: FileSystem, gitClient: GitClient, options?: {
        debounceMs?: number;
    });
    /**
     * Observe the current repo state.
     *
     * If another observe() call is already in flight, this returns the same
     * pending result (coalescing). If a previous observation completed within
     * the debounce window, the cached result is returned immediately without
     * spawning new git processes.
     */
    observe(): Promise<RepoObservation>;
    initialize(): Promise<void>;
    getState(): RepoObservation;
    /** Core observation logic, separated from debounce/coalesce control. */
    private performObserve;
}
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