/**
 * Retrieves the MIME type for a given file name based on its extension.
 * @param fileName - The name of the file to extract the MIME type for.
 * @returns The MIME type if found, or null if not found.
 */
export declare const getMimeType: (fileName: string) => string | null;
/**
 * Extracts numeric IDs from a string in the format [Name:ID].
 * @param input - The input string containing IDs in the format [Name:ID].
 * @returns An array of extracted numeric IDs.
 */
export declare const extractIds: (input: string) => number[];
/**
 * Decrypts an encoded string using a salt.
 * @param salt - The salt used for decryption.
 * @param encoded - The encoded string to decrypt.
 * @returns The decrypted string.
 */
export declare const decrypt: (salt: string, encoded: string) => string;
/**
 * Encrypts a plain text string using a salt.
 * @param salt - The salt used for encryption.
 * @param text - The plain text string to encrypt.
 * @returns The encrypted string in hexadecimal format.
 */
export declare const encrypt: (salt: string, text: string) => string;
//# sourceMappingURL=Mixins.d.ts.map