How to use the react-native-svg.Defs function in react-native-svg

/**
 * background gradient
 * @module components/background
 */

const React = require('react');
const getDimensions = require('../lib/getDimensions');
const Svg = React.createFactory(require('react-native-svg').Svg);
const Defs = React.createFactory(require('react-native-svg').Defs);
const Stop = React.createFactory(require('react-native-svg').Stop);
const connect = require('react-redux').connect;
const getColorByTemp = require('../lib/temperature-color');
const getDataPoints = require('../lib/getDataPoints');
const {interpolate} = require('d3-interpolate');
const LinearGradient = React.createFactory(
    require('react-native-svg').LinearGradient
);
const Rect = React.createFactory(require('react-native-svg').Rect);

/**
 * @param {ForecastDataBlock[]} hourly
 * @param {number[]} hourRange
 * @param {number|null} index when need to show only one column
 * @returns {string[][]} colors
 */

);
const {Linking, AlertIOS, Dimensions} = require('react-native');
const legend = React.createFactory(require('./legend'));
const connect = require('react-redux').connect;
const store = require('../reducers/main');
const touchableOpacity = React.createFactory(
    require('react-native').TouchableOpacity
);
const scrollView = React.createFactory(require('react-native').ScrollView);
const linearGradient = React.createFactory(
    require('react-native-svg').LinearGradient
);
const svg = React.createFactory(
    require('react-native-svg').Svg
);
const defs = React.createFactory(require('react-native-svg').Defs);
const stop = React.createFactory(require('react-native-svg').Stop);
const rect = React.createFactory(require('react-native-svg').Rect);
const {ShareDialog, MessageDialog, AppEventsLogger} = require('react-native-fbsdk');
const linkObj  = {
    contentType: 'link',
    contentUrl: 'http://zowni.com'
};
const reportError = require('../lib/reportError');

module.exports = connect(
    function mapStateToProps(state) {
        return {
            temperatureFormat: state.temperatureFormat,
            forecastApiRequests: state.forecastApiRequests,
            forecastApiLimit: state.forecastApiLimit
        }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _nonIterableSpread(); }

function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance"); }

function _iterableToArray(iter) { if (Symbol.iterator in Object(iter) || Object.prototype.toString.call(iter) === "[object Arguments]") return Array.from(iter); }

function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = new Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } }

var svgObjectMap = {
  "svg": _reactNativeSvg.Svg,
  "path": _reactNativeSvg.Path,
  "rect": _reactNativeSvg.Rect,
  "defs": _reactNativeSvg.Defs,
  "mask": _reactNativeSvg.Mask,
  "g": _reactNativeSvg.G,
  "clipPath": _reactNativeSvg.ClipPath
};

function convert(createElement, element) {
  var extraProps = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};

  if (typeof element === 'string') {
    return element;
  }

  var children = (element.children || []).map(function (child) {
    return convert(createElement, child);
  });
  var mixins = Object.keys(element.attributes || {}).reduce(function (acc, key) {

/**
 * svg group with wind by hour
 * @module detailsCloudCoverage
 */

'use strict';

const React = require('react');
const {width} = require('../lib/getDimensions')();
const height = 50;
const svg = React.createFactory(require('react-native-svg').Svg);
const Defs = React.createFactory(require('react-native-svg').Defs);
const Stop = React.createFactory(require('react-native-svg').Stop);
const LinearGradient = React.createFactory(
    require('react-native-svg').LinearGradient
);
const {scaleLinear, scaleThreshold} = require('d3-scale');
const {area, curveMonotoneX} = require('d3-shape');
const path = React.createFactory(require('react-native-svg').Path);
const setStateAnimated = require('../lib/setStateAnimated');
const view = React.createFactory(require('react-native').View);
const text = React.createFactory(require('./text'));
const labelTypes = [
    'clear', 'partly-cloudy', 'cloudy'
];
const labelTypeLables = {
    'clear': 'Clear',
    'partly-cloudy': 'Partly Cloudy',