import { FetchState } from '@zeniai/client-epic-state';
/**
 * Edge-triggered visibility controller for the TaskDetailPage subtask
 * creation form.
 *
 * The form should auto-close only on the In-Progress -> Completed
 * transition of `subTaskCreateStatus` (i.e. when a fresh create
 * succeeds). A level-trigger (`status === "Completed"`) is buggy: if
 * the user creates a subtask, then re-opens the form, the status is
 * still "Completed" from the previous create and the form would close
 * immediately. Mirrors the edge-trigger pattern in TaskListRow.tsx.
 *
 * Extracted to its own module so the race-condition unit test can
 * exercise the exact code path that ships in TaskDetailPage, instead
 * of a re-declared copy.
 */
export declare const useSubtaskFormVisibility: (subTaskCreateStatus: FetchState | undefined) => {
    isSubtaskFormVisible: boolean;
    setIsSubtaskFormVisible: (visible: boolean) => void;
};