Use Babel’s transform-runtime plugin

.babelrc

@@ -1,4 +1,4 @@
 {
   "presets": ["es2015", "react"],
-  "plugins": ["transform-object-rest-spread"]
+  "plugins": ["transform-object-rest-spread", "transform-runtime"]
 }

package.json

@@ -27,8 +27,10 @@
     "babel-loader": "6.2.4",
     "babel-plugin-transform-es2015-destructuring": "6.9.0",
     "babel-plugin-transform-object-rest-spread": "6.8.0",
+    "babel-plugin-transform-runtime": "^6.23.0",
     "babel-preset-es2015": "6.6.0",
     "babel-preset-react": "6.5.0",
+    "babel-runtime": "^6.23.0",
     "emoji-datasource": "^3.0.0",
     "emojilib": "^2.2.1",
     "inflection": "1.10.0",

yarn.lock

@@ -513,6 +513,12 @@ babel-plugin-transform-regenerator@^6.6.0:
   dependencies:
     regenerator-transform "0.9.11"
 
+babel-plugin-transform-runtime@^6.23.0:
+  version "6.23.0"
+  resolved "https://registry.yarnpkg.com/babel-plugin-transform-runtime/-/babel-plugin-transform-runtime-6.23.0.tgz#88490d446502ea9b8e7efb0fe09ec4d99479b1ee"
+  dependencies:
+    babel-runtime "^6.22.0"
+
 babel-plugin-transform-strict-mode@^6.24.1:
   version "6.24.1"
   resolved "https://registry.yarnpkg.com/babel-plugin-transform-strict-mode/-/babel-plugin-transform-strict-mode-6.24.1.tgz#d5faf7aa578a65bbe591cf5edae04a0c67020758"
@@ -575,7 +581,7 @@ babel-runtime@^5.0.0:
   dependencies:
     core-js "^1.0.0"
 
-babel-runtime@^6.0.0, babel-runtime@^6.18.0, babel-runtime@^6.22.0, babel-runtime@^6.9.0:
+babel-runtime@^6.0.0, babel-runtime@^6.18.0, babel-runtime@^6.22.0, babel-runtime@^6.23.0, babel-runtime@^6.9.0:
   version "6.23.0"
   resolved "https://registry.yarnpkg.com/babel-runtime/-/babel-runtime-6.23.0.tgz#0a9489f144de70efb3ce4300accdb329e2fc543b"
   dependencies: