import { IHttpClient } from "../dal/http/IHttpClient";
export declare class ImageHelper {
    static getFeatureImage(featureImage: {
        thumbnailRenderer: {
            sponsorToken: string;
            spItemUrl: string;
        };
    }, spHttpClient: IHttpClient, size?: number): Promise<string>;
    static getThumbnailImageFromPreviewUrlWithGraph(graphClient: IHttpClient, previewUrl: string, size?: "small" | "medium" | "large"): Promise<any>;
    static getThumbnailImageFromMetadata(graphClient: IHttpClient, siteId: string, webId: string, fileId: string, size?: "small" | "medium" | "large"): Promise<any>;
    static getThumbnailImageFromGraph(graphClient: IHttpClient, graphApiUrl: string): Promise<any>;
}