export declare const IsImage: (extension: string | undefined | null) => boolean;
export interface PreviewFile {
    idOrKey?: string | number;
    file?: File | null;
    src?: string | null;
    previewSrc: string | ArrayBuffer | null;
    isPreviewImage: boolean;
    fileName?: string | null;
    fileSize?: number | null;
    extension?: string | null;
    isImgError?: boolean;
}
