import { ValueSyncStore } from '../../../util/events/sync-store';
import type { PeritextSurfaceState, UiLifeCycles } from '../../web';
export declare class CursorState implements UiLifeCycles {
    readonly ctx: PeritextSurfaceState;
    /** Current score. */
    readonly score: ValueSyncStore<number>;
    /** By how much the score changed. */
    readonly scoreDelta: ValueSyncStore<number>;
    /** The last score that was shown to the user. */
    readonly lastVisScore: ValueSyncStore<number>;
    constructor(ctx: PeritextSurfaceState);
    /** -------------------------------------------------- {@link UiLifeCycles} */
    start(): () => void;
}