Merge branch 'master' into fragments

Author: staylor

.babelrc

@@ -1,11 +1,11 @@
 {
   "presets": [
-    ["kyt-react", {"modules": true}],
+    ["kyt-react", {"modules": true}]
   ],
   "plugins": [
     "transform-class-properties",
     "transform-es2015-modules-commonjs",
     "transform-object-rest-spread",
-    "transform-regenerator",
+    "transform-regenerator"
   ]
 }

package-lock.json

@@ -8,9 +8,9 @@
   "license": "Apache-2.0",
   "typings": "index.d.ts",
   "dependencies": {
-    "deep-equal": "^1.0.1",
     "invariant": "^2.2.4",
     "prop-types": "^15.6.1",
+    "react-fast-compare": "^2.0.2",
     "shallowequal": "^1.0.2"
   },
   "devDependencies": {

package.json

@@ -36,7 +36,7 @@ export default class Dispatcher extends Component {
     let serverState = null;
     const state = reducePropsToState(
       helmetInstances.get().map(instance => {
-        const props = Object.assign({}, instance.props);
+        const props = { ...instance.props };
         delete props.context;
         return props;
       })

src/Dispatcher.js

@@ -1,6 +1,6 @@
 import React, { Component } from 'react';
 import PropTypes from 'prop-types';
-import deepEqual from 'deep-equal';
+import fastCompare from 'react-fast-compare';
 import invariant from 'invariant';
 import Context from './Context';
 import Dispatcher from './Dispatcher';
@@ -55,7 +55,7 @@ export default class Helmet extends Component {
   };
 
   shouldComponentUpdate(nextProps) {
-    return !deepEqual(this.props, nextProps);
+    return !fastCompare(this.props, nextProps);
   }
 
   mapNestedChildrenToProps(child, nestedChildren) {