diff --git a/.babelrc.js b/.babelrc.js
index ab2b8606efd4..8035e082456e 100644
--- a/.babelrc.js
+++ b/.babelrc.js
@@ -11,6 +11,7 @@ module.exports = {
   ],
   plugins: [
     process.env.ROLLUP && 'external-helpers',
-    process.env.PLUGINS && 'transform-es2015-modules-strip'
+    process.env.PLUGINS && 'transform-es2015-modules-strip',
+    '@babel/proposal-object-rest-spread'
   ].filter(Boolean)
 };
diff --git a/build/rollup.config.js b/build/rollup.config.js
index 44ffac71002d..99bf637c0d89 100644
--- a/build/rollup.config.js
+++ b/build/rollup.config.js
@@ -15,7 +15,8 @@ const plugins = [
     externalHelpersWhitelist: [ // include only required helpers
       'defineProperties',
       'createClass',
-      'inheritsLoose'
+      'inheritsLoose',
+      'extends'
     ]
   })
 ]
diff --git a/js/src/carousel.js b/js/src/carousel.js
index 10ed2203edeb..ea443f189f06 100644
--- a/js/src/carousel.js
+++ b/js/src/carousel.js
@@ -223,7 +223,10 @@ const Carousel = (($) => {
     // private
 
     _getConfig(config) {
-      config = $.extend({}, Default, config)
+      config = {
+        ...Default,
+        ...config
+      }
       Util.typeCheckConfig(NAME, config, DefaultType)
       return config
     }
@@ -428,10 +431,16 @@ const Carousel = (($) => {
     static _jQueryInterface(config) {
       return this.each(function () {
         let data      = $(this).data(DATA_KEY)
-        const _config = $.extend({}, Default, $(this).data())
+        let _config = {
+          ...Default,
+          ...$(this).data()
+        }
 
         if (typeof config === 'object') {
-          $.extend(_config, config)
+          _config = {
+            ..._config,
+            ...config
+          }
         }
 
         const action = typeof config === 'string' ? config : _config.slide
@@ -468,7 +477,10 @@ const Carousel = (($) => {
         return
       }
 
-      const config     = $.extend({}, $(target).data(), $(this).data())
+      const config = {
+        ...$(target).data(),
+        ...$(this).data()
+      }
       const slideIndex = this.getAttribute('data-slide-to')
 
       if (slideIndex) {
diff --git a/js/src/collapse.js b/js/src/collapse.js
index f907aec54d82..1456294f43e1 100644
--- a/js/src/collapse.js
+++ b/js/src/collapse.js
@@ -277,7 +277,10 @@ const Collapse = (($) => {
     // private
 
     _getConfig(config) {
-      config = $.extend({}, Default, config)
+      config = {
+        ...Default,
+        ...config
+      }
       config.toggle = Boolean(config.toggle) // coerce string values
       Util.typeCheckConfig(NAME, config, DefaultType)
       return config
@@ -338,12 +341,11 @@ const Collapse = (($) => {
       return this.each(function () {
         const $this   = $(this)
         let data      = $this.data(DATA_KEY)
-        const _config = $.extend(
-          {},
-          Default,
-          $this.data(),
-          typeof config === 'object' && config
-        )
+        const _config = {
+          ...Default,
+          ...$this.data(),
+          ...typeof config === 'object' && config
+        }
 
         if (!data && _config.toggle && /show|hide/.test(config)) {
           _config.toggle = false
diff --git a/js/src/dropdown.js b/js/src/dropdown.js
index 57ee10ebdddf..8affedc6ce9e 100644
--- a/js/src/dropdown.js
+++ b/js/src/dropdown.js
@@ -210,12 +210,11 @@ const Dropdown = (($) => {
     }
 
     _getConfig(config) {
-      config = $.extend(
-        {},
-        this.constructor.Default,
-        $(this._element).data(),
-        config
-      )
+      config = {
+        ...this.constructor.Default,
+        ...$(this._element).data(),
+        ...config
+      }
 
       Util.typeCheckConfig(
         NAME,
@@ -262,7 +261,10 @@ const Dropdown = (($) => {
       const offsetConf = {}
       if (typeof this._config.offset === 'function') {
         offsetConf.fn = (data) => {
-          data.offsets = $.extend({}, data.offsets, this._config.offset(data.offsets) || {})
+          data.offsets = {
+            ...data.offsets,
+            ...this._config.offset(data.offsets) || {}
+          }
           return data
         }
       } else {
diff --git a/js/src/modal.js b/js/src/modal.js
index 95565aabcceb..be3105fa150c 100644
--- a/js/src/modal.js
+++ b/js/src/modal.js
@@ -227,7 +227,10 @@ const Modal = (($) => {
     // private
 
     _getConfig(config) {
-      config = $.extend({}, Default, config)
+      config = {
+        ...Default,
+        ...config
+      }
       Util.typeCheckConfig(NAME, config, DefaultType)
       return config
     }
@@ -506,12 +509,11 @@ const Modal = (($) => {
     static _jQueryInterface(config, relatedTarget) {
       return this.each(function () {
         let data      = $(this).data(DATA_KEY)
-        const _config = $.extend(
-          {},
-          Modal.Default,
-          $(this).data(),
-          typeof config === 'object' && config
-        )
+        const _config = {
+          ...Modal.Default,
+          ...$(this).data(),
+          ...typeof config === 'object' && config
+        }
 
         if (!data) {
           data = new Modal(this, _config)
@@ -547,7 +549,10 @@ const Modal = (($) => {
     }
 
     const config = $(target).data(DATA_KEY) ?
-      'toggle' : $.extend({}, $(target).data(), $(this).data())
+      'toggle' : {
+        ...$(target).data(),
+        ...$(this).data()
+      }
 
     if (this.tagName === 'A' || this.tagName === 'AREA') {
       event.preventDefault()
diff --git a/js/src/popover.js b/js/src/popover.js
index 5534f4441246..8beec963a2b0 100644
--- a/js/src/popover.js
+++ b/js/src/popover.js
@@ -26,19 +26,25 @@ const Popover = (($) => {
   const CLASS_PREFIX        = 'bs-popover'
   const BSCLS_PREFIX_REGEX  = new RegExp(`(^|\\s)${CLASS_PREFIX}\\S+`, 'g')
 
-  const Default = $.extend({}, Tooltip.Default, {
-    placement : 'right',
-    trigger   : 'click',
-    content   : '',
-    template  : '<div class="popover" role="tooltip">'
-              + '<div class="arrow"></div>'
-              + '<h3 class="popover-header"></h3>'
-              + '<div class="popover-body"></div></div>'
-  })
-
-  const DefaultType = $.extend({}, Tooltip.DefaultType, {
-    content : '(string|element|function)'
-  })
+  const Default = {
+    ...Tooltip.Default,
+    ...{
+      placement : 'right',
+      trigger   : 'click',
+      content   : '',
+      template  : '<div class="popover" role="tooltip">'
+                + '<div class="arrow"></div>'
+                + '<h3 class="popover-header"></h3>'
+                + '<div class="popover-body"></div></div>'
+    }
+  }
+
+  const DefaultType = {
+    ...Tooltip.DefaultType,
+    ...{
+      content : '(string|element|function)'
+    }
+  }
 
   const ClassName = {
     FADE : 'fade',
diff --git a/js/src/scrollspy.js b/js/src/scrollspy.js
index 3a13d954ac57..fd5197e383fd 100644
--- a/js/src/scrollspy.js
+++ b/js/src/scrollspy.js
@@ -171,7 +171,10 @@ const ScrollSpy = (($) => {
     // private
 
     _getConfig(config) {
-      config = $.extend({}, Default, config)
+      config = {
+        ...Default,
+        ...config
+      }
 
       if (typeof config.target !== 'string') {
         let id = $(config.target).attr('id')
diff --git a/js/src/tooltip.js b/js/src/tooltip.js
index 7cefd0be6aa1..002dea429835 100644
--- a/js/src/tooltip.js
+++ b/js/src/tooltip.js
@@ -501,10 +501,13 @@ const Tooltip = (($) => {
       })
 
       if (this.config.selector) {
-        this.config = $.extend({}, this.config, {
-          trigger  : 'manual',
-          selector : ''
-        })
+        this.config = {
+          ...this.config,
+          ...{
+            trigger  : 'manual',
+            selector : ''
+          }
+        }
       } else {
         this._fixTitle()
       }
@@ -613,12 +616,11 @@ const Tooltip = (($) => {
     }
 
     _getConfig(config) {
-      config = $.extend(
-        {},
-        this.constructor.Default,
-        $(this.element).data(),
-        config
-      )
+      config = {
+        ...this.constructor.Default,
+        ...$(this.element).data(),
+        ...config
+      }
 
       if (typeof config.delay === 'number') {
         config.delay = {
diff --git a/package-lock.json b/package-lock.json
index f73bcd33e267..936da5bce3d4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,6 +4,108 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@babel/code-frame": {
+      "version": "7.0.0-beta.31",
+      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.0.0-beta.31.tgz",
+      "integrity": "sha512-yd7CkUughvHQoEahQqcMdrZw6o/6PwUxiRkfZuVDVHCDe77mysD/suoNyk5mK6phTnRW1kyIbPHyCJgxw++LXg==",
+      "dev": true,
+      "requires": {
+        "chalk": "2.3.0",
+        "esutils": "2.0.2",
+        "js-tokens": "3.0.2"
+      }
+    },
+    "@babel/helper-function-name": {
+      "version": "7.0.0-beta.31",
+      "resolved": "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.0.0-beta.31.tgz",
+      "integrity": "sha512-c+DAyp8LMm2nzSs2uXEuxp4LYGSUYEyHtU3fU57avFChjsnTmmpWmXj2dv0yUxHTEydgVAv5fIzA+4KJwoqWDA==",
+      "dev": true,
+      "requires": {
+        "@babel/helper-get-function-arity": "7.0.0-beta.31",
+        "@babel/template": "7.0.0-beta.31",
+        "@babel/traverse": "7.0.0-beta.31",
+        "@babel/types": "7.0.0-beta.31"
+      }
+    },
+    "@babel/helper-get-function-arity": {
+      "version": "7.0.0-beta.31",
+      "resolved": "https://registry.npmjs.org/@babel/helper-get-function-arity/-/helper-get-function-arity-7.0.0-beta.31.tgz",
+      "integrity": "sha512-m7rVVX/dMLbbB9NCzKYRrrFb0qZxgpmQ4Wv6y7zEsB6skoJHRuXVeb/hAFze79vXBbuD63ci7AVHXzAdZSk9KQ==",
+      "dev": true,
+      "requires": {
+        "@babel/types": "7.0.0-beta.31"
+      }
+    },
+    "@babel/plugin-proposal-object-rest-spread": {
+      "version": "7.0.0-beta.31",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-object-rest-spread/-/plugin-proposal-object-rest-spread-7.0.0-beta.31.tgz",
+      "integrity": "sha512-B5MenTlCDSKUZS/cHfg09Go1FTcQ+M72PT0pnhNIhdtEqRp/U6mUx7O936iHqERCBHbqCCFe11ckHtOd4ftSJQ==",
+      "dev": true,
+      "requires": {
+        "@babel/plugin-syntax-object-rest-spread": "7.0.0-beta.31"
+      }
+    },
+    "@babel/plugin-syntax-object-rest-spread": {
+      "version": "7.0.0-beta.31",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-object-rest-spread/-/plugin-syntax-object-rest-spread-7.0.0-beta.31.tgz",
+      "integrity": "sha512-ININ7XXAeMrW1BOOysATWjNOIPd6OP97KV1OTZhk1clhDHPuqKhPuLmBIkXTomV+rKVBMPmOV/EalX6k+VLLtg==",
+      "dev": true
+    },
+    "@babel/template": {
+      "version": "7.0.0-beta.31",
+      "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.0.0-beta.31.tgz",
+      "integrity": "sha512-97IRmLvoDhIDSQkqklVt3UCxJsv0LUEVb/0DzXWtc8Lgiyxj567qZkmTG9aR21CmcJVVIvq2Y/moZj4oEpl5AA==",
+      "dev": true,
+      "requires": {
+        "@babel/code-frame": "7.0.0-beta.31",
+        "@babel/types": "7.0.0-beta.31",
+        "babylon": "7.0.0-beta.31",
+        "lodash": "4.17.4"
+      },
+      "dependencies": {
+        "babylon": {
+          "version": "7.0.0-beta.31",
+          "resolved": "https://registry.npmjs.org/babylon/-/babylon-7.0.0-beta.31.tgz",
+          "integrity": "sha512-6lm2mV3S51yEnKmQQNnswoABL1U1H1KHoCCVwdwI3hvIv+W7ya4ki7Aw4o4KxtUHjNKkK5WpZb22rrMMOcJXJQ==",
+          "dev": true
+        }
+      }
+    },
+    "@babel/traverse": {
+      "version": "7.0.0-beta.31",
+      "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.0.0-beta.31.tgz",
+      "integrity": "sha512-3N+VJW+KlezEjFBG7WSYeMyC5kIqVLPb/PGSzCDPFcJrnArluD1GIl7Y3xC7cjKiTq2/JohaLWHVPjJWHlo9Gg==",
+      "dev": true,
+      "requires": {
+        "@babel/code-frame": "7.0.0-beta.31",
+        "@babel/helper-function-name": "7.0.0-beta.31",
+        "@babel/types": "7.0.0-beta.31",
+        "babylon": "7.0.0-beta.31",
+        "debug": "3.1.0",
+        "globals": "10.3.0",
+        "invariant": "2.2.2",
+        "lodash": "4.17.4"
+      },
+      "dependencies": {
+        "babylon": {
+          "version": "7.0.0-beta.31",
+          "resolved": "https://registry.npmjs.org/babylon/-/babylon-7.0.0-beta.31.tgz",
+          "integrity": "sha512-6lm2mV3S51yEnKmQQNnswoABL1U1H1KHoCCVwdwI3hvIv+W7ya4ki7Aw4o4KxtUHjNKkK5WpZb22rrMMOcJXJQ==",
+          "dev": true
+        }
+      }
+    },
+    "@babel/types": {
+      "version": "7.0.0-beta.31",
+      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.0.0-beta.31.tgz",
+      "integrity": "sha512-exAHB+NeFGxkfQ5dSUD03xl3zYGneeSk2Mw2ldTt/nTvYxuDiuSp3DlxgUBgzbdTFG4fbwPk0WtKWOoTXCmNGg==",
+      "dev": true,
+      "requires": {
+        "esutils": "2.0.2",
+        "lodash": "4.17.4",
+        "to-fast-properties": "2.0.0"
+      }
+    },
     "abbrev": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz",
@@ -343,99 +445,21 @@
       }
     },
     "babel-eslint": {
-      "version": "8.0.1",
-      "resolved": "https://registry.npmjs.org/babel-eslint/-/babel-eslint-8.0.1.tgz",
-      "integrity": "sha512-h3moF6PCTQE06UjMMG+ydZSBvZ4Q7rqPE/5WAUOvUyHYUTqxm8JVhjZRiG1avI/tGVOK4BnZLDQapyLzh8DeKg==",
+      "version": "8.0.2",
+      "resolved": "https://registry.npmjs.org/babel-eslint/-/babel-eslint-8.0.2.tgz",
+      "integrity": "sha512-yyl5U088oE+419+BNLJDKVWkUokuPLQeQt9ZTy9uM9kAzbtQgyYL3JkG425B8jxXA7MwTxnDAtRLMKJNH36qjA==",
       "dev": true,
       "requires": {
-        "babel-code-frame": "7.0.0-beta.0",
-        "babel-traverse": "7.0.0-beta.0",
-        "babel-types": "7.0.0-beta.0",
-        "babylon": "7.0.0-beta.22"
+        "@babel/code-frame": "7.0.0-beta.31",
+        "@babel/traverse": "7.0.0-beta.31",
+        "@babel/types": "7.0.0-beta.31",
+        "babylon": "7.0.0-beta.31"
       },
       "dependencies": {
-        "babel-code-frame": {
-          "version": "7.0.0-beta.0",
-          "resolved": "https://registry.npmjs.org/babel-code-frame/-/babel-code-frame-7.0.0-beta.0.tgz",
-          "integrity": "sha512-/xr1ADm5bnTjjN+xwoXb7lF4v2rnxMzNZzFU7h8SxB+qB6+IqSTOOqVcpaPTUC2Non/MbQxS3OIZnJpQ2X21aQ==",
-          "dev": true,
-          "requires": {
-            "chalk": "2.3.0",
-            "esutils": "2.0.2",
-            "js-tokens": "3.0.2"
-          }
-        },
-        "babel-helper-function-name": {
-          "version": "7.0.0-beta.0",
-          "resolved": "https://registry.npmjs.org/babel-helper-function-name/-/babel-helper-function-name-7.0.0-beta.0.tgz",
-          "integrity": "sha512-DaQccFBBWBEzMdqbKmNXamY0m1yLHJGOdbbEsNoGdJrrU7wAF3wwowtDDPzF0ZT3SqJXPgZW/P2kgBX9moMuAA==",
-          "dev": true,
-          "requires": {
-            "babel-helper-get-function-arity": "7.0.0-beta.0",
-            "babel-template": "7.0.0-beta.0",
-            "babel-traverse": "7.0.0-beta.0",
-            "babel-types": "7.0.0-beta.0"
-          }
-        },
-        "babel-helper-get-function-arity": {
-          "version": "7.0.0-beta.0",
-          "resolved": "https://registry.npmjs.org/babel-helper-get-function-arity/-/babel-helper-get-function-arity-7.0.0-beta.0.tgz",
-          "integrity": "sha512-csqAic15/2Vm1951nJxkkL9K8E6ojyNF/eAOjk7pqJlO8kvgrccGNFCV9eDwcGHDPe5AjvJGwVSAcQ5fit9wuA==",
-          "dev": true,
-          "requires": {
-            "babel-types": "7.0.0-beta.0"
-          }
-        },
-        "babel-messages": {
-          "version": "7.0.0-beta.0",
-          "resolved": "https://registry.npmjs.org/babel-messages/-/babel-messages-7.0.0-beta.0.tgz",
-          "integrity": "sha512-eXdShsm9ZTh9AQhlIaAn6HR3xWpxCnK9ZwIDA9QyjnwTgMctGxHHflw4b4RJ3/ZjTL0Vrmvm0tQXPkp49mTAUw==",
-          "dev": true
-        },
-        "babel-template": {
-          "version": "7.0.0-beta.0",
-          "resolved": "https://registry.npmjs.org/babel-template/-/babel-template-7.0.0-beta.0.tgz",
-          "integrity": "sha512-tmdH+MmmU0F6Ur8humpevSmFzYKbrN3Oru0g5Qyg4R6+sxjnzZmnvzUbsP0aKMr7tB0Ua6xhEb9arKTOsEMkyA==",
-          "dev": true,
-          "requires": {
-            "babel-traverse": "7.0.0-beta.0",
-            "babel-types": "7.0.0-beta.0",
-            "babylon": "7.0.0-beta.22",
-            "lodash": "4.17.4"
-          }
-        },
-        "babel-traverse": {
-          "version": "7.0.0-beta.0",
-          "resolved": "https://registry.npmjs.org/babel-traverse/-/babel-traverse-7.0.0-beta.0.tgz",
-          "integrity": "sha512-IKzuTqUcQtMRZ0Vv5RjIrGGj33eBKmNTNeRexWSyjPPuAciyNkva1rt7WXPfHfkb+dX7coRAIUhzeTUEzhnwdA==",
-          "dev": true,
-          "requires": {
-            "babel-code-frame": "7.0.0-beta.0",
-            "babel-helper-function-name": "7.0.0-beta.0",
-            "babel-messages": "7.0.0-beta.0",
-            "babel-types": "7.0.0-beta.0",
-            "babylon": "7.0.0-beta.22",
-            "debug": "3.1.0",
-            "globals": "10.2.0",
-            "invariant": "2.2.2",
-            "lodash": "4.17.4"
-          }
-        },
-        "babel-types": {
-          "version": "7.0.0-beta.0",
-          "resolved": "https://registry.npmjs.org/babel-types/-/babel-types-7.0.0-beta.0.tgz",
-          "integrity": "sha512-rJc2kV9iPJGLlqIY71AM3nPcdkoeLRCDuR07GFgfd3lFl4TsBQq76TxYQQIZ2MONg1HpsqmuoCXr9aZ1Oa4wYw==",
-          "dev": true,
-          "requires": {
-            "esutils": "2.0.2",
-            "lodash": "4.17.4",
-            "to-fast-properties": "2.0.0"
-          }
-        },
         "babylon": {
-          "version": "7.0.0-beta.22",
-          "resolved": "https://registry.npmjs.org/babylon/-/babylon-7.0.0-beta.22.tgz",
-          "integrity": "sha512-Yl7iT8QGrS8OfR7p6R12AJexQm+brKwrryai4VWZ7NHUbPoZ5al3+klhvl/14shXZiLa7uK//OIFuZ1/RKHgoA==",
+          "version": "7.0.0-beta.31",
+          "resolved": "https://registry.npmjs.org/babylon/-/babylon-7.0.0-beta.31.tgz",
+          "integrity": "sha512-6lm2mV3S51yEnKmQQNnswoABL1U1H1KHoCCVwdwI3hvIv+W7ya4ki7Aw4o4KxtUHjNKkK5WpZb22rrMMOcJXJQ==",
           "dev": true
         }
       }
@@ -1110,7 +1134,7 @@
         "babel-types": "7.0.0-beta.2",
         "babylon": "7.0.0-beta.25",
         "debug": "3.1.0",
-        "globals": "10.2.0",
+        "globals": "10.3.0",
         "invariant": "2.2.2",
         "lodash": "4.17.4"
       }
@@ -2070,9 +2094,9 @@
       }
     },
     "eslint-plugin-compat": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/eslint-plugin-compat/-/eslint-plugin-compat-2.0.1.tgz",
-      "integrity": "sha512-6LtsFQsrFyPGLBVJMnQEmUEY1Sc0Trpz56i/y3qTCA5JKc1KePKS5q5Xcc8LoGgPyeDw3IfnyYqS4Q7vR1Ffeg==",
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-compat/-/eslint-plugin-compat-2.1.0.tgz",
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@@ -2746,9 +2770,9 @@
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-      "resolved": "https://registry.npmjs.org/globals/-/globals-10.2.0.tgz",
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+      "resolved": "https://registry.npmjs.org/globals/-/globals-10.3.0.tgz",
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@@ -4290,9 +4314,9 @@
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-      "resolved": "https://registry.npmjs.org/node-sass/-/node-sass-4.5.3.tgz",
-      "integrity": "sha1-0JydEXlkEjnRuX/8YjH9zsU+FWg=",
+      "version": "4.6.0",
+      "resolved": "https://registry.npmjs.org/node-sass/-/node-sass-4.6.0.tgz",
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@@ -5103,9 +5127,9 @@
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-      "resolved": "https://registry.npmjs.org/postcss-less/-/postcss-less-1.1.1.tgz",
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+      "resolved": "https://registry.npmjs.org/postcss-less/-/postcss-less-1.1.2.tgz",
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@@ -6453,7 +6477,7 @@
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-        "postcss-less": "1.1.1",
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@@ -6465,7 +6489,7 @@
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-        "sugarss": "1.0.0",
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@@ -6590,9 +6614,9 @@
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-      "integrity": "sha1-ZeUbOVhDL7cNVFGmi7M+MtDPHvc=",
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/sugarss/-/sugarss-1.0.1.tgz",
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@@ -6765,9 +6789,9 @@
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+      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.1.8.tgz",
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diff --git a/package.json b/package.json
index 4f0efda65dd3..61068a0195bb 100644
--- a/package.json
+++ b/package.json
@@ -80,6 +80,7 @@
     "popper.js": "^1.12.6"
   },
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+    "@babel/plugin-proposal-object-rest-spread": "7.0.0-beta.31",
     "autoprefixer": "^7.1.2",
     "babel-cli": "7.0.0-beta.2",
     "babel-eslint": "^8.0.0",