fix.diff

diff --git a/babel.config.js b/babel.config.js
index b8b230b..f930f3e 100644
--- a/babel.config.js
+++ b/babel.config.js
@@ -30,7 +30,6 @@ module.exports = function(api) {
         {
           forceAllTransforms: true,
           useBuiltIns: 'entry',
-          corejs: 3,
           modules: false,
           exclude: ['transform-typeof-symbol']
         }
@@ -57,8 +56,7 @@ module.exports = function(api) {
         require('@babel/plugin-transform-runtime').default,
         {
           helpers: false,
-          regenerator: true,
-          corejs: 3
+          regenerator: true
         }
       ],
       [
diff --git a/yarn.lock b/yarn.lock
index 6c18821..c2f142c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -622,14 +622,6 @@
     js-levenshtein "^1.1.3"
     semver "^5.5.0"
 
-"@babel/runtime-corejs3@^7.4.5":
-  version "7.4.5"
-  resolved "https://registry.yarnpkg.com/@babel/runtime-corejs3/-/runtime-corejs3-7.4.5.tgz#7df89702351c5fdc34b5555544fcf11b4ea7051c"
-  integrity sha512-yxHpUObdpx4zbuLJOHIZkw43E4NbWGsGH+85kRUj+VEcdtjlqI0vDcAja9mwOHqD7/4vCZp69q6eztz/sFDibQ==
-  dependencies:
-    core-js-pure "^3.0.0"
-    regenerator-runtime "^0.13.2"
-
 "@babel/runtime@^7.4.2", "@babel/runtime@^7.4.5":
   version "7.4.5"
   resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.4.5.tgz#582bb531f5f9dc67d2fcb682979894f75e253f12"
@@ -693,9 +685,9 @@
   integrity sha512-6AZcab77PeJQv8RdfryDYh6tAGcndcRnqYaciLiFclADBPFE9Ip978pGCPiKcKGgCg8S1P1nZII+1GNIrUrx+g==
 
 "@rails/webpacker@^4.0.6":
-  version "4.0.6"
-  resolved "https://registry.yarnpkg.com/@rails/webpacker/-/webpacker-4.0.6.tgz#10c3dc85404a43102640e10ba2518de2cb43e4f3"
-  integrity sha512-WFqR23eUGrlnU8f3sIaMeK+x2ykv3SI3cycpzWMlL/0VwvxKw7/o22rlE9EDCowvzry4zVWKK88oBzqSGRqngA==
+  version "4.0.7"
+  resolved "https://registry.yarnpkg.com/@rails/webpacker/-/webpacker-4.0.7.tgz#268571bf974e78ce57eca9fa478f5bd97fd5182c"
+  integrity sha512-nx3inMv7euO0UsD0voJ+n3/z1u56PuprW322b67TLuDmOHRpT7yUjBJULMisVKA6PVJw4DwiG9Kbf8ZGu53+tw==
   dependencies:
     "@babel/core" "^7.4.5"
     "@babel/plugin-proposal-class-properties" "^7.4.4"
@@ -706,7 +698,6 @@
     "@babel/plugin-transform-runtime" "^7.4.4"
     "@babel/preset-env" "^7.4.5"
     "@babel/runtime" "^7.4.5"
-    "@babel/runtime-corejs3" "^7.4.5"
     babel-loader "^8.0.6"
     babel-plugin-dynamic-import-node "^2.2.0"
     babel-plugin-macros "^2.5.0"
@@ -1142,15 +1133,16 @@ atob@^2.1.1:
   integrity sha512-Wm6ukoaOGJi/73p/cl2GvLjTI5JM1k/O14isD73YML8StrH/7/lRFgmg8nICZgD3bZZvjwCGxtMOD3wWNAu8cg==
 
 autoprefixer@^9.4.9:
-  version "9.5.1"
-  resolved "https://registry.yarnpkg.com/autoprefixer/-/autoprefixer-9.5.1.tgz#243b1267b67e7e947f28919d786b50d3bb0fb357"
-  integrity sha512-KJSzkStUl3wP0D5sdMlP82Q52JLy5+atf2MHAre48+ckWkXgixmfHyWmA77wFDy6jTHU6mIgXv6hAQ2mf1PjJQ==
+  version "9.6.0"
+  resolved "https://registry.yarnpkg.com/autoprefixer/-/autoprefixer-9.6.0.tgz#0111c6bde2ad20c6f17995a33fad7cf6854b4c87"
+  integrity sha512-kuip9YilBqhirhHEGHaBTZKXL//xxGnzvsD0FtBQa6z+A69qZD6s/BAX9VzDF1i9VKDquTJDQaPLSEhOnL6FvQ==
   dependencies:
-    browserslist "^4.5.4"
-    caniuse-lite "^1.0.30000957"
+    browserslist "^4.6.1"
+    caniuse-lite "^1.0.30000971"
+    chalk "^2.4.2"
     normalize-range "^0.1.2"
     num2fraction "^1.2.2"
-    postcss "^7.0.14"
+    postcss "^7.0.16"
     postcss-value-parser "^3.3.1"
 
 aws-sign2@~0.7.0:
@@ -1372,7 +1364,7 @@ browserify-zlib@^0.2.0:
   dependencies:
     pako "~1.0.5"
 
-browserslist@^4.0.0, browserslist@^4.4.2, browserslist@^4.5.4, browserslist@^4.6.0:
+browserslist@^4.0.0, browserslist@^4.4.2, browserslist@^4.6.0, browserslist@^4.6.1:
   version "4.6.1"
   resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-4.6.1.tgz#ee5059b1aec18cbec9d055d6cb5e24ae50343a9b"
   integrity sha512-1MC18ooMPRG2UuVFJTHFIAkk6mpByJfxCrnUyvSlu/hyQSFHMrlhM02SzNuCV+quTP4CKmqtOMAIjrifrpBJXQ==
@@ -1507,7 +1499,7 @@ caniuse-api@^3.0.0:
     lodash.memoize "^4.1.2"
     lodash.uniq "^4.5.0"
 
-caniuse-lite@^1.0.0, caniuse-lite@^1.0.30000939, caniuse-lite@^1.0.30000957, caniuse-lite@^1.0.30000971:
+caniuse-lite@^1.0.0, caniuse-lite@^1.0.30000939, caniuse-lite@^1.0.30000971:
   version "1.0.30000971"
   resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30000971.tgz#d1000e4546486a6977756547352bc96a4cfd2b13"
   integrity sha512-TQFYFhRS0O5rdsmSbF1Wn+16latXYsQJat66f7S7lizXW1PVpWJeZw9wqqVLIjuxDRz7s7xRUj13QCfd8hKn6g==
@@ -1820,7 +1812,7 @@ core-js-compat@^3.1.1:
     core-js-pure "3.1.3"
     semver "^6.1.0"
 
-core-js-pure@3.1.3, core-js-pure@^3.0.0:
+core-js-pure@3.1.3:
   version "3.1.3"
   resolved "https://registry.yarnpkg.com/core-js-pure/-/core-js-pure-3.1.3.tgz#4c90752d5b9471f641514f3728f51c1e0783d0b5"
   integrity sha512-k3JWTrcQBKqjkjI0bkfXS0lbpWPxYuHWfMMjC1VDmzU4Q58IwSbuXSo99YO/hUHlw/EB4AlfA2PVxOGkrIq6dA==
@@ -2354,9 +2346,9 @@ ee-first@1.1.1:
   integrity sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0=
 
 electron-to-chromium@^1.3.137:
-  version "1.3.143"
-  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.143.tgz#8b2a631ab75157aa53d0c2933275643b99ef580b"
-  integrity sha512-J9jOpxIljQZlV6GIP2fwAWq0T69syawU0sH3EW3O2Bgxquiy+veeIT5mBDRz+i3oHUSL1tvVgRKH3/4QiQh9Pg==
+  version "1.3.144"
+  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.144.tgz#d742d2c451090798303a4a5eea4f33f5e60f5d94"
+  integrity sha512-jNRFJpfNrYm5uJ4x0q9oYMOfbL0JPOlkNli8GS/5zEmCjnE5jAtoCo4BYajHiqSPqEeAjtTdItL4p7EZw+jSfg==
 
 elliptic@^6.0.0:
   version "6.4.1"
@@ -5397,7 +5389,7 @@ postcss-values-parser@^2.0.0, postcss-values-parser@^2.0.1:
     indexes-of "^1.0.1"
     uniq "^1.0.1"
 
-postcss@^7.0.0, postcss@^7.0.1, postcss@^7.0.14, postcss@^7.0.2, postcss@^7.0.5, postcss@^7.0.6:
+postcss@^7.0.0, postcss@^7.0.1, postcss@^7.0.14, postcss@^7.0.16, postcss@^7.0.2, postcss@^7.0.5, postcss@^7.0.6:
   version "7.0.16"
   resolved "https://registry.yarnpkg.com/postcss/-/postcss-7.0.16.tgz#48f64f1b4b558cb8b52c88987724359acb010da2"
   integrity sha512-MOo8zNSlIqh22Uaa3drkdIAgUGEL+AD1ESiSdmElLUmE2uVDo1QloiT/IfW9qRw8Gw+Y/w69UVMGwbufMSftxA==
@@ -5802,9 +5794,9 @@ resolve-url@^0.2.1:
   integrity sha1-LGN/53yJOv0qZj/iGqkIAGjiBSo=
 
 resolve@^1.1.7, resolve@^1.10.0, resolve@^1.3.2, resolve@^1.8.1:
-  version "1.11.0"
-  resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.11.0.tgz#4014870ba296176b86343d50b60f3b50609ce232"
-  integrity sha512-WL2pBDjqT6pGUNSUzMw00o4T7If+z4H2x3Gz893WoUQ5KW8Vr9txp00ykiP16VBaZF5+j/OcXJHZ9+PCvdiDKw==
+  version "1.11.1"
+  resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.11.1.tgz#ea10d8110376982fef578df8fc30b9ac30a07a3e"
+  integrity sha512-vIpgF6wfuJOZI7KKKSP+HmiKggadPQAdsp5HiC1mvqnfp0gF1vdwgBWZIdrVft9pgqoMFQN+R7BSWZiBxx+BBw==
   dependencies:
     path-parse "^1.0.6"