/**
 * Keeps track of popup trigger nodes by their ids.
 *
 * Ported from upstream, with `Element` widened to `unknown`: a React Native
 * trigger is a native node, and the map only ever stores and hands it back — the
 * same way the popup stores already carry `triggerNode`.
 *
 * Lookups iterate the id map; trigger counts are single digits, so linear scans
 * on event-frequency paths are cheaper than maintaining a parallel Set.
 */
export declare class PopupTriggerMap {
    private idMap;
    /**
     * Adds a trigger node under the given id.
     *
     * The node is assumed not to be registered under multiple ids.
     */
    add(id: string, node: unknown): void;
    delete(id: string): void;
    getById(id: string): unknown;
    entries(): IterableIterator<[string, unknown]>;
    get size(): number;
}
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