import type { ReactNode } from 'react';
/**
 * Unique handle assigned to each registered guard. Returned from `register`
 * so callers can `unregister` themselves on unmount or when the guard
 * condition no longer applies.
 */
export type GuardId = string;
export interface GuardRegistration {
    /**
     * When `true`, navigation through the guard-aware layer will be intercepted
     * and the confirmation modal will be shown.
     */
    isBlocked: () => boolean;
    /**
     * Called once the user confirms navigation. Use this to reset form state
     * (e.g. restore a snapshot) before navigation proceeds.
     */
    onConfirm: () => void;
    /**
     * Optional summary of this guard's unsaved changes, rendered inside the
     * confirmation modal while the guard is blocking.
     */
    renderDetails?: () => ReactNode;
}
export interface UnsavedChangesGuardContextValue {
    register: (registration: GuardRegistration) => GuardId;
    unregister: (id: GuardId) => void;
    /**
     * Runs `proceed` immediately when no guards are blocking. Otherwise opens
     * the confirmation modal and runs `proceed` only when the user confirms.
     */
    requestNavigation: (proceed: () => void) => void;
}
export interface UnsavedChangesGuardProps {
    children: ReactNode;
}
export interface PendingNavigation {
    proceed: () => void;
    /** Blocking guards' change summaries, captured when the navigation was intercepted. */
    changeSummary: ReactNode;
}