import { IKnowledge } from '@glodon-aiot/apis';
export declare const getFileExtension: (filename: string) => string | undefined;
export declare const getImageExtension: (url: string) => string | null;
export declare const removeFileExtension: (filename: string) => string | undefined;
export declare const formatFileSize: (fileSize: number) => string;
export declare const removeNewlines: (str: string) => string;
export declare const removeLeadingAndTrailingBackslashes: (str: string) => string;
export declare const extractFileName: (fileName: any) => any;
export declare const getBase64: (file: any) => Promise<string>;
export declare const JWT: (token: string) => any;
export declare const isExpired: (token: string) => boolean;
export declare enum shortCutEnum {
    NETWORK = "\u8BF7\u4F60\u4F18\u5148\u4ECE\u7F51\u7EDC\u4E2D\u641C\u7D22",
    DOCUMENT = "\u8BF7\u4F60\u4F18\u5148\u4ECE\u4EE5\u4E0A\u6587\u4EF6\u4E2D\u641C\u7D22"
}
export declare const FILE_NAME_MAX_LENGTH = 100;
export declare const isValidImageUrlWithAnyExtension: (url: string) => boolean;
export declare const fileTypes: string[];
/**
 * 对输入字符串中的反斜杠进行转义处理。
 * 在 Markdown 解析等场景中，反斜杠有特殊含义，
 * 使用此函数可将反斜杠转义，使其作为普通文本显示。
 * @param text - 待转义的输入字符串。
 * @returns 转义后的字符串，特殊字符前会添加反斜杠。
 */
export declare function escapeSlash(text: string): string;
export declare function calcKnowledgesLeafCount(ks: IKnowledge[]): number;