hurricane/security_camera/resources/cloud_server/public/src/helpers/Base64.js - v4.1

export const b64EncodeUnicode = function (str) {
  // first we use encodeURIComponent to get percent-encoded UTF-8,
  // then we convert the percent encodings into raw bytes which
  // can be fed into btoa.
  return btoa(encodeURIComponent(str).replace(/%([0-9A-F]{2})/g,
    function toSolidBytes (match, p1) {
      return String.fromCharCode('0x' + p1)
    }))
}
export const b64DecodeUnicode = function (str) {
  // Going backwards: from bytestream, to percent-encoding, to original string.
  return decodeURIComponent(atob(str).split('').map(function (c) {
    return '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2)
  }).join(''))
}