import { Feature } from "../../private/Feature";
export declare class StartAmbush extends Feature {
    private readonly runInNFrames;
    /**
     * Helper function to start a Challenge Room or the Boss Rush.
     *
     * Specifically, this is performed by spawning a sack on top of the player, waiting a game frame,
     * and then removing the sack and the pickups that the sack dropped.
     *
     * In order to use this function, you must upgrade your mod with `ISCFeature.START_AMBUSH`.
     *
     * @public
     */
    startAmbush(): void;
}
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