export interface Icon {
    url: string;
    reference: string;
    type: null | string;
    size: null | 'any' | Size | Size[];
}
export interface Image {
    type: string;
    size: 'any' | Size | Size[];
}
export declare type TextFetcher = (url: string) => PromiseLike<string>;
export declare type BufferFetcher = (url: string) => PromiseLike<ArrayBuffer>;
export interface Size {
    width: number;
    height: number;
}