The module provides data encoding and decoding using Base64 algorithms. ##Example var base64 = require("sdk/base64"); var encodedData = base64.encode("Hello, World"); var decodedData = base64.decode(encodedData); ##Unicode Strings In order to `encode` and `decode` properly Unicode strings, the `charset` parameter needs to be set to `"utf-8"`: var base64 = require("sdk/base64"); var encodedData = base64.encode(unicodeString, "utf-8"); var decodedData = base64.decode(encodedData, "utf-8"); @function Creates a base-64 encoded ASCII string from a string of binary data. @param data {string} The data to encode @param [charset] {string} The charset of the string to encode (optional). The only accepted value is `"utf-8"`. @returns {string} The encoded string @function Decodes a string of data which has been encoded using base-64 encoding. @param data {string} The encoded data @param [charset] {string} The charset of the string to encode (optional). The only accepted value is `"utf-8"`. @returns {string} The decoded string