import { Entity } from "aframe";
import { AbstractFeature } from "aframe-typescript-boilerplate";
import { ComponentController } from "aframe-typescript-boilerplate";
export declare class ExpressionFeature extends AbstractFeature {
    expressions: Set<string>;
    constructor(controller: ComponentController, entity: Entity);
    init(): void;
    update(data: any, oldData: any): void;
    remove(): void;
    pause(): void;
    play(): void;
    tick(time: number, timeDelta: number): void;
}