export declare const characterSets: readonly ["Unknown", "ASCII", "ISO8859_1", "ISO8859_2", "ISO8859_3", "ISO8859_4", "ISO8859_5", "ISO8859_6", "ISO8859_7", "ISO8859_8", "ISO8859_9", "ISO8859_10", "ISO8859_11", "ISO8859_13", "ISO8859_14", "ISO8859_15", "ISO8859_16", "Cp437", "Cp1250", "Cp1251", "Cp1252", "Cp1256", "Shift_JIS", "Big5", "GB2312", "GB18030", "EUC_JP", "EUC_KR", "UTF16BE", "UTF16BE", "UTF8", "UTF16LE", "UTF32BE", "UTF32LE", "BINARY"];
/**
 * @deprecated Use `"UTF16BE"` instead.
 */
type DeprecatedUnicodeBig = "UnicodeBig";
export type CharacterSet = (typeof characterSets)[number];
/**
 * Encodes a character set identifier into its numeric representation.
 *
 * @param characterSet - The character set to encode, either a standard CharacterSet or legacy 'UnicodeBig'
 * @returns A number representing the encoded character set
 *
 * @remarks
 * Special handling is provided for the deprecated 'UnicodeBig' value, which is mapped to 'UTF16BE'
 */
export declare function encodeCharacterSet(characterSet: CharacterSet | DeprecatedUnicodeBig): number;
/**
 * Decodes a character set based on its numeric identifier.
 *
 * @param number - The numeric identifier of the character set to decode
 * @returns The decoded character set
 */
export declare function decodeCharacterSet(number: number): CharacterSet;
export {};