function encodeBase64UrlSafe(object) {
  var stringified = JSON.stringify(object);

  var base64UrlSafeMap = {
    "+": "-",
    "/": "_",
    "=": "",
  };

  var encoded = nlapiEncrypt(stringified, "base64");

  Object.keys(base64UrlSafeMap).forEach(function (searchValue) {
    encoded = encoded.replace(searchValue, base64UrlSafeMap[searchValue]);
  });

  return encoded;
}

/**
   * Helper function to decode the script parameters that are passed from the Supplier Invoice User Event Script
   * They are passed as stringified JavaScript objects that are Base64 (Url Safe) encoded
   *
   * @param context script context to read parameters from
   * @param {string} parameter name of the url parameter
   * @returns {any}
   */
  function getBase64EncodedJsonParameter(context, parameter) {
    const encoded = context.request.parameters[parameter];

    if (!encoded) {
      throw error.create({
        name: "CARS_REQUIRED_PARAM",
        message: `Missing required parameter "${parameter}"`,
      });
    }

    let decoded;

    try {
      decoded = encode.convert({
        inputEncoding: encode.Encoding.BASE_64_URL_SAFE,
        outputEncoding: encode.Encoding.UTF_8,
        string: encoded,
      });
    } catch {
      throw error.create({
        name: "CARS_INVALID_PARAM",
        message: `Invalid value for "${parameter}" parameter. Unable to decode from Base64UrlSafe`,
      });
    }

    try {
      return JSON.parse(decoded);
    } catch {
      throw error.create({
        name: "CARS_INVALID_PARAM",
        message: `Invalid value for "${parameter}" parameter. Unable to parse as JSON`,
      });
    }
  }