import type { ExtensionUIContext } from "../../core/extensions/index.js";
import type { IsolatedInteractiveRuntime } from "./isolated-runtime.js";
/**
 * Generation-owned host dialogs and line widgets for the isolated engine.
 *
 * `select`, `confirm`, `input`, and `editor` mount real host components and can
 * outlive the engine child that asked for them. Without ownership a dead
 * generation left its dialog on screen forever, its host promise unsettled, and
 * could answer through the replacement child's writer. Each request is recorded
 * with the generation that issued it; when that generation ends the mount is
 * aborted — closing only its own instance — and any answer is suppressed.
 *
 * Line widgets (`setWidget` with `string[]`) have the same problem without any
 * component to close: they are plain host state keyed by name, so the key is
 * tracked against its latest writer and released only if that writer's
 * generation is the one that died.
 */
export declare class EngineDialogHostController {
    private readonly runtime;
    private readonly ui;
    private readonly records;
    /** Line-widget key -> generation that last wrote it. */
    private readonly widgetOwners;
    private readonly unsubscribeHandler;
    private readonly unsubscribeGenerationEnded;
    constructor(runtime: IsolatedInteractiveRuntime, ui: ExtensionUIContext);
    dispose(): void;
    /** Close every dialog and release every widget key owned by an ended generation. */
    disposeGeneration(generation: number): void;
    private abortAll;
    private handle;
}
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