export declare const EXTERNAL_FILE_LINK_SERVICE_TYPE: {
    readonly box: "box";
    readonly GoogleDrive: "google-drive";
    readonly Dropbox: "dropbox";
    readonly OneDrive: "onedrive";
    readonly Others: "others";
    readonly Undef: null;
};
export type ExternalFileLinkServiceType = (typeof EXTERNAL_FILE_LINK_SERVICE_TYPE)[keyof typeof EXTERNAL_FILE_LINK_SERVICE_TYPE];