import { CollectionReturnValue, Core, Css } from "cytoscape";
import * as i0 from "@angular/core";
type ViewportConfig = Readonly<{
    minZoomLevel: number;
    maxZoomLevel: number;
    animateOptions: {
        duration: number;
        easing: Css.TransitionTimingFunction;
    };
}>;
export declare class CytoscapeViewportService {
    readonly config: ViewportConfig;
    zoomIn(cy: Core): void;
    zoomOut(cy: Core): void;
    resetView(cy: Core, eles: CollectionReturnValue): void;
    private handleZoomChange;
    private fitToView;
    static ɵfac: i0.ɵɵFactoryDeclaration<CytoscapeViewportService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<CytoscapeViewportService>;
}
export {};