export declare const getFileExtension: (filename: string) => string;
export declare const getSanitizedUploadFilename: (filename: string, outputExtension?: string) => string;
export declare const getMimeTypeEssence: (mimeType?: null | string) => string;
export declare const isSvgMimeType: (mimeType?: null | string) => boolean;
export declare const isXmlMimeType: (mimeType?: null | string) => boolean;
export declare const isSvgUpload: ({ filename, mimeType, }: {
    filename: string;
    mimeType?: null | string;
}) => boolean;
export declare const isXmlUpload: ({ filename, mimeType, }: {
    filename: string;
    mimeType?: null | string;
}) => boolean;
export declare const uploadRequiresServerValidation: (upload: {
    allowRestrictedFileTypes?: boolean;
    filename: string;
    mimeType?: null | string;
}) => boolean;
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