diff --git a/.gitignore b/.gitignore
index 495fb80e..9120523b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,4 +19,6 @@ logs
 
 _old
 
-coverage
\ No newline at end of file
+coverage
+test/**/__diff_output__
+test/screenshots
\ No newline at end of file
diff --git a/cypress.json b/cypress.json
index baca8666..f7910b54 100644
--- a/cypress.json
+++ b/cypress.json
@@ -6,5 +6,6 @@
     "defaultCommandTimeout": 10000,
     "screenshotsFolder": "test/screenshots",
     "video": false,
-    "trashAssetsBeforeRuns": true
+    "trashAssetsBeforeRuns": true,
+    "chromeWebSecurity": false
 }
\ No newline at end of file
diff --git a/package.json b/package.json
index 0afc5157..5d8c18d6 100644
--- a/package.json
+++ b/package.json
@@ -30,6 +30,7 @@
     "dependencies": {
         "babel": "^6.23.0",
         "babel-core": "^6.26.3",
+        "babel-polyfill": "^6.26.0",
         "bignumber.js": "2.4.0",
         "color-hash": "^1.0.3",
         "commander": "^2.19.0",
@@ -76,6 +77,7 @@
         "rimraf": "^2.6.2",
         "styled-components": "^4.1.2",
         "styled-normalize": "^8.0.4",
+        "trezor-bridge-communicator": "^1.0.0",
         "trezor-connect": "6.0.3-beta.10",
         "wallet-address-validator": "^0.2.4",
         "web3": "1.0.0-beta.35",
diff --git a/test/snapshots/device/not-initialized.js/Not initialized page -- body.snap.png b/test/snapshots/device/not-initialized.js/Not initialized page -- body.snap.png
new file mode 100644
index 00000000..c227a399
Binary files /dev/null and b/test/snapshots/device/not-initialized.js/Not initialized page -- body.snap.png differ
diff --git a/test/snapshots/device/not-initialized.js/Not initialized page -- header.snap.png b/test/snapshots/device/not-initialized.js/Not initialized page -- header.snap.png
new file mode 100644
index 00000000..c17964f8
Binary files /dev/null and b/test/snapshots/device/not-initialized.js/Not initialized page -- header.snap.png differ
diff --git a/test/support/index.js b/test/support/index.js
index 83e15a5a..4777c0c6 100644
--- a/test/support/index.js
+++ b/test/support/index.js
@@ -1 +1,7 @@
-import './commands';
\ No newline at end of file
+import 'babel-polyfill';
+import './commands';
+import { initSeedAllDevice } from 'trezor-bridge-communicator';
+
+before(async () => {
+    await initSeedAllDevice();
+});
\ No newline at end of file
diff --git a/yarn.lock b/yarn.lock
index a76227b3..8dc93388 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -116,10 +116,42 @@
     esutils "^2.0.2"
     js-tokens "^3.0.0"
 
+"@babel/node@^7.2.2":
+  version "7.2.2"
+  resolved "https://registry.yarnpkg.com/@babel/node/-/node-7.2.2.tgz#1557dd23545b38d7b1d030a9c0e8fb225dbf70ab"
+  integrity sha512-jPqgTycE26uFsuWpLika9Ohz9dmLQHWjOnMNxBOjYb1HXO+eLKxEr5FfKSXH/tBvFwwaw+pzke3gagnurGOfCA==
+  dependencies:
+    "@babel/polyfill" "^7.0.0"
+    "@babel/register" "^7.0.0"
+    commander "^2.8.1"
+    lodash "^4.17.10"
+    v8flags "^3.1.1"
+
 "@babel/parser@7.0.0-rc.1":
   version "7.0.0-rc.1"
   resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.0.0-rc.1.tgz#d009a9bba8175d7b971e30cd03535b278c44082d"
 
+"@babel/polyfill@^7.0.0":
+  version "7.2.5"
+  resolved "https://registry.yarnpkg.com/@babel/polyfill/-/polyfill-7.2.5.tgz#6c54b964f71ad27edddc567d065e57e87ed7fa7d"
+  integrity sha512-8Y/t3MWThtMLYr0YNC/Q76tqN1w30+b0uQMeFUYauG2UGTR19zyUtFrAzT23zNtBxPp+LbE5E/nwV/q/r3y6ug==
+  dependencies:
+    core-js "^2.5.7"
+    regenerator-runtime "^0.12.0"
+
+"@babel/register@^7.0.0":
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/@babel/register/-/register-7.0.0.tgz#fa634bae1bfa429f60615b754fc1f1d745edd827"
+  integrity sha512-f/+CRmaCe7rVEvcvPvxeA8j5aJhHC3aJie7YuqcMDhUOuyWLA7J/aNrTaHIzoWPEhpHA54mec4Mm8fv8KBlv3g==
+  dependencies:
+    core-js "^2.5.7"
+    find-cache-dir "^1.0.0"
+    home-or-tmp "^3.0.0"
+    lodash "^4.17.10"
+    mkdirp "^0.5.1"
+    pirates "^4.0.0"
+    source-map-support "^0.5.9"
+
 "@babel/runtime@^7.2.0":
   version "7.2.0"
   resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.2.0.tgz#b03e42eeddf5898e00646e4c840fa07ba8dcad7f"
@@ -299,6 +331,59 @@
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/@nodelib/fs.stat/-/fs.stat-1.0.2.tgz#d056b68999769728a1cff8d643bc59eb6f0be436"
 
+"@protobufjs/aspromise@^1.1.1", "@protobufjs/aspromise@^1.1.2":
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/@protobufjs/aspromise/-/aspromise-1.1.2.tgz#9b8b0cc663d669a7d8f6f5d0893a14d348f30fbf"
+  integrity sha1-m4sMxmPWaafY9vXQiToU00jzD78=
+
+"@protobufjs/base64@^1.1.2":
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/@protobufjs/base64/-/base64-1.1.2.tgz#4c85730e59b9a1f1f349047dbf24296034bb2735"
+  integrity sha512-AZkcAA5vnN/v4PDqKyMR5lx7hZttPDgClv83E//FMNhR2TMcLUhfRUBHCmSl0oi9zMgDDqRUJkSxO3wm85+XLg==
+
+"@protobufjs/codegen@^2.0.4":
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/@protobufjs/codegen/-/codegen-2.0.4.tgz#7ef37f0d010fb028ad1ad59722e506d9262815cb"
+  integrity sha512-YyFaikqM5sH0ziFZCN3xDC7zeGaB/d0IUb9CATugHWbd1FRFwWwt4ld4OYMPWu5a3Xe01mGAULCdqhMlPl29Jg==
+
+"@protobufjs/eventemitter@^1.1.0":
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/@protobufjs/eventemitter/-/eventemitter-1.1.0.tgz#355cbc98bafad5978f9ed095f397621f1d066b70"
+  integrity sha1-NVy8mLr61ZePntCV85diHx0Ga3A=
+
+"@protobufjs/fetch@^1.1.0":
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/@protobufjs/fetch/-/fetch-1.1.0.tgz#ba99fb598614af65700c1619ff06d454b0d84c45"
+  integrity sha1-upn7WYYUr2VwDBYZ/wbUVLDYTEU=
+  dependencies:
+    "@protobufjs/aspromise" "^1.1.1"
+    "@protobufjs/inquire" "^1.1.0"
+
+"@protobufjs/float@^1.0.2":
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/@protobufjs/float/-/float-1.0.2.tgz#5e9e1abdcb73fc0a7cb8b291df78c8cbd97b87d1"
+  integrity sha1-Xp4avctz/Ap8uLKR33jIy9l7h9E=
+
+"@protobufjs/inquire@^1.1.0":
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/@protobufjs/inquire/-/inquire-1.1.0.tgz#ff200e3e7cf2429e2dcafc1140828e8cc638f089"
+  integrity sha1-/yAOPnzyQp4tyvwRQIKOjMY48Ik=
+
+"@protobufjs/path@^1.1.2":
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/@protobufjs/path/-/path-1.1.2.tgz#6cc2b20c5c9ad6ad0dccfd21ca7673d8d7fbf68d"
+  integrity sha1-bMKyDFya1q0NzP0hynZz2Nf79o0=
+
+"@protobufjs/pool@^1.1.0":
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/@protobufjs/pool/-/pool-1.1.0.tgz#09fd15f2d6d3abfa9b65bc366506d6ad7846ff54"
+  integrity sha1-Cf0V8tbTq/qbZbw2ZQbWrXhG/1Q=
+
+"@protobufjs/utf8@^1.1.0":
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/@protobufjs/utf8/-/utf8-1.1.0.tgz#a777360b5b39a1a2e5106f8e858f2fd2d060c570"
+  integrity sha1-p3c2C1s5oaLlEG+OhY8v0tBgxXA=
+
 "@sindresorhus/is@^0.7.0":
   version "0.7.0"
   resolved "https://registry.yarnpkg.com/@sindresorhus/is/-/is-0.7.0.tgz#9a06f4f137ee84d7df0460c1fdb1135ffa6c50fd"
@@ -352,6 +437,11 @@
   resolved "https://registry.yarnpkg.com/@types/lodash/-/lodash-4.14.87.tgz#55f92183b048c2c64402afe472f8333f4e319a6b"
   integrity sha512-AqRC+aEF4N0LuNHtcjKtvF9OTfqZI0iaBoe3dA6m/W+/YZJBZjBmW/QIZ8fBeXC6cnytSY9tBoFBqZ9uSCeVsw==
 
+"@types/long@^4.0.0":
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/@types/long/-/long-4.0.0.tgz#719551d2352d301ac8b81db732acb6bdc28dbdef"
+  integrity sha512-1w52Nyx4Gq47uuu0EVcsHBxZFJgurQ+rTKS3qMHxR1GY2T8c2AJYd6vZoZ9q1rupaDjU0yT+Jc2XTyXkjeMA+Q==
+
 "@types/minimatch@3.0.3":
   version "3.0.3"
   resolved "https://registry.yarnpkg.com/@types/minimatch/-/minimatch-3.0.3.tgz#3dca0e3f33b200fc7d1139c0cd96c1268cadfd9d"
@@ -362,6 +452,11 @@
   resolved "https://registry.yarnpkg.com/@types/mocha/-/mocha-2.2.44.tgz#1d4a798e53f35212fd5ad4d04050620171cd5b5e"
   integrity sha512-k2tWTQU8G4+iSMvqKi0Q9IIsWAp/n8xzdZS4Q4YVIltApoMA00wFBFdlJnmoaK1/z7B0Cy0yPe6GgXteSmdUNw==
 
+"@types/node@^10.1.0":
+  version "10.12.18"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-10.12.18.tgz#1d3ca764718915584fcd9f6344621b7672665c67"
+  integrity sha512-fh+pAqt4xRzPfqA6eh3Z2y6fyZavRIumvjhaCL753+TVkGKGhpPeyrJG2JftD0T9q4GF00KjefsQ+PQNDdWQaQ==
+
 "@types/sinon-chai@2.7.29":
   version "2.7.29"
   resolved "https://registry.yarnpkg.com/@types/sinon-chai/-/sinon-chai-2.7.29.tgz#4db01497e2dd1908b2bd30d1782f456353f5f723"
@@ -1592,6 +1687,7 @@ babel-plugin-transform-strict-mode@^6.24.1:
 babel-polyfill@^6.26.0:
   version "6.26.0"
   resolved "https://registry.yarnpkg.com/babel-polyfill/-/babel-polyfill-6.26.0.tgz#379937abc67d7895970adc621f284cd966cf2153"
+  integrity sha1-N5k3q8Z9eJWXCtxiHyhM2WbPIVM=
   dependencies:
     babel-runtime "^6.26.0"
     core-js "^2.5.0"
@@ -2817,6 +2913,11 @@ core-js@^2.4.1:
   version "2.5.6"
   resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.5.6.tgz#0fe6d45bf3cac3ac364a9d72de7576f4eb221b9d"
 
+core-js@^2.5.7:
+  version "2.6.3"
+  resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.6.3.tgz#4b70938bdffdaf64931e66e2db158f0892289c49"
+  integrity sha512-l00tmFFZOBHtYhN4Cz7k32VM7vTn3rE2ANjQDxdEN6zmXZ/xq1jQuutnmHvMG1ZJ7xd72+TA5YpUK8wz3rWsfQ==
+
 core-util-is@1.0.2, core-util-is@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
@@ -3105,6 +3206,13 @@ debug@3.1.0, debug@^3.0.0, debug@^3.1.0:
   dependencies:
     ms "2.0.0"
 
+debug@^4.1.1:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-4.1.1.tgz#3b72260255109c6b589cee050f1d516139664791"
+  integrity sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==
+  dependencies:
+    ms "^2.1.1"
+
 decamelize-keys@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/decamelize-keys/-/decamelize-keys-1.1.0.tgz#d171a87933252807eb3cb61dc1c1445d078df2d9"
@@ -5109,6 +5217,11 @@ home-or-tmp@^2.0.0:
     os-homedir "^1.0.0"
     os-tmpdir "^1.0.1"
 
+home-or-tmp@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/home-or-tmp/-/home-or-tmp-3.0.0.tgz#57a8fe24cf33cdd524860a15821ddc25c86671fb"
+  integrity sha1-V6j+JM8zzdUkhgoVgh3cJchmcfs=
+
 homedir-polyfill@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/homedir-polyfill/-/homedir-polyfill-1.0.1.tgz#4c2bbc8a758998feebf5ed68580f76d46768b4bc"
@@ -6694,7 +6807,7 @@ loglevelnext@^1.0.1:
     es6-symbol "^3.1.1"
     object.assign "^4.1.0"
 
-long@4.0.0:
+long@4.0.0, long@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/long/-/long-4.0.0.tgz#9a7b71cfb7d361a194ea555241c92f7468d5bf28"
 
@@ -7146,6 +7259,11 @@ ms@2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
 
+ms@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.1.tgz#30a5864eb3ebb0a66f2ebe6d727af06a09d86e0a"
+  integrity sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==
+
 multicast-dns-service-types@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/multicast-dns-service-types/-/multicast-dns-service-types-1.1.0.tgz#899f11d9686e5e05cb91b35d5f0e63b773cfc901"
@@ -7256,6 +7374,11 @@ node-fetch@^1.0.1:
     encoding "^0.1.11"
     is-stream "^1.0.1"
 
+node-fetch@^2.3.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.3.0.tgz#1a1d940bbfb916a1d3e0219f037e89e71f8c5fa5"
+  integrity sha512-MOd8pV3fxENbryESLgVIeaGKrdl+uaYhCSSVkjeOb/31/njTpcis5aWfdqgNlHIrKOLRbMnfPINPOML2CIFeXA==
+
 node-forge@0.7.5:
   version "0.7.5"
   resolved "https://registry.yarnpkg.com/node-forge/-/node-forge-0.7.5.tgz#6c152c345ce11c52f465c2abd957e8639cd674df"
@@ -7292,6 +7415,11 @@ node-libs-browser@^2.0.0:
     util "^0.10.3"
     vm-browserify "0.0.4"
 
+node-modules-regexp@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/node-modules-regexp/-/node-modules-regexp-1.0.0.tgz#8d9dbe28964a4ac5712e9131642107c71e90ec40"
+  integrity sha1-jZ2+KJZKSsVxLpExZCEHxx6Q7EA=
+
 node-notifier@5.2.1, node-notifier@^5.2.1:
   version "5.2.1"
   resolved "https://registry.yarnpkg.com/node-notifier/-/node-notifier-5.2.1.tgz#fa313dd08f5517db0e2502e5758d664ac69f9dea"
@@ -7894,6 +8022,13 @@ pinkie@^2.0.0:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/pinkie/-/pinkie-2.0.4.tgz#72556b80cfa0d48a974e80e77248e80ed4f7f870"
 
+pirates@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/pirates/-/pirates-4.0.0.tgz#850b18781b4ac6ec58a43c9ed9ec5fe6796addbd"
+  integrity sha512-8t5BsXy1LUIjn3WWOlOuFDuKswhQb/tkak641lvBgmPOBUQHXveORtlMCp6OdPV1dtuTaEahKA8VNz6uLfKBtA==
+  dependencies:
+    node-modules-regexp "^1.0.0"
+
 pixelmatch@^4.0.2:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/pixelmatch/-/pixelmatch-4.0.2.tgz#8f47dcec5011b477b67db03c243bc1f3085e8854"
@@ -8138,6 +8273,25 @@ prop-types@^15.6.2:
     loose-envify "^1.3.1"
     object-assign "^4.1.1"
 
+protobufjs@^6.8.8:
+  version "6.8.8"
+  resolved "https://registry.yarnpkg.com/protobufjs/-/protobufjs-6.8.8.tgz#c8b4f1282fd7a90e6f5b109ed11c84af82908e7c"
+  integrity sha512-AAmHtD5pXgZfi7GMpllpO3q1Xw1OYldr+dMUlAnffGTAhqkg72WdmSY71uKBF/JuyiKs8psYbtKrhi0ASCD8qw==
+  dependencies:
+    "@protobufjs/aspromise" "^1.1.2"
+    "@protobufjs/base64" "^1.1.2"
+    "@protobufjs/codegen" "^2.0.4"
+    "@protobufjs/eventemitter" "^1.1.0"
+    "@protobufjs/fetch" "^1.1.0"
+    "@protobufjs/float" "^1.0.2"
+    "@protobufjs/inquire" "^1.1.0"
+    "@protobufjs/path" "^1.1.2"
+    "@protobufjs/pool" "^1.1.0"
+    "@protobufjs/utf8" "^1.1.0"
+    "@types/long" "^4.0.0"
+    "@types/node" "^10.1.0"
+    long "^4.0.0"
+
 proxy-addr@~2.0.3:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/proxy-addr/-/proxy-addr-2.0.3.tgz#355f262505a621646b3130a728eb647e22055341"
@@ -9547,6 +9701,14 @@ source-map-support@^0.5.6:
     buffer-from "^1.0.0"
     source-map "^0.6.0"
 
+source-map-support@^0.5.9:
+  version "0.5.10"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.10.tgz#2214080bc9d51832511ee2bab96e3c2f9353120c"
+  integrity sha512-YfQ3tQFTK/yzlGJuX8pTwa4tifQj4QS2Mj7UegOu8jAz59MqIiMGPXxQhVQiIMNzayuUSF/jEuVnfFF5JqybmQ==
+  dependencies:
+    buffer-from "^1.0.0"
+    source-map "^0.6.0"
+
 source-map-url@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/source-map-url/-/source-map-url-0.4.0.tgz#3e935d7ddd73631b97659956d55128e87b5084a3"
@@ -10303,6 +10465,18 @@ tr46@^1.0.1:
   dependencies:
     punycode "^2.1.0"
 
+trezor-bridge-communicator@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/trezor-bridge-communicator/-/trezor-bridge-communicator-1.0.0.tgz#ce52f4e1c71e17c660b5a70c1e3557c5ef3926df"
+  integrity sha512-neofgYNuQuIZDYi3BM0/N4BX4HNks9oQWyRFUK1RoMMKgfDEDthlH2PTsUg4JTE3izqZyTHMrT5JVXID0CG4JA==
+  dependencies:
+    "@babel/node" "^7.2.2"
+    debug "^4.1.1"
+    node-fetch "^2.3.0"
+    protobufjs "^6.8.8"
+    request "^2.88.0"
+    whatwg-fetch "^3.0.0"
+
 trezor-connect@6.0.3-beta.10:
   version "6.0.3-beta.10"
   resolved "https://registry.yarnpkg.com/trezor-connect/-/trezor-connect-6.0.3-beta.10.tgz#a703b06946bb98912cbe719f2bb3393ee41f03b1"
@@ -10690,6 +10864,13 @@ v8flags@^2.1.1:
   dependencies:
     user-home "^1.1.1"
 
+v8flags@^3.1.1:
+  version "3.1.2"
+  resolved "https://registry.yarnpkg.com/v8flags/-/v8flags-3.1.2.tgz#fc5cd0c227428181e6c29b2992e4f8f1da5e0c9f"
+  integrity sha512-MtivA7GF24yMPte9Rp/BWGCYQNaUj86zeYxV/x2RRJMKagImbbv3u8iJC57lNhWLPcGLJmHcHmFWkNsplbbLWw==
+  dependencies:
+    homedir-polyfill "^1.0.1"
+
 validate-npm-package-license@^3.0.1:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/validate-npm-package-license/-/validate-npm-package-license-3.0.1.tgz#2804babe712ad3379459acfbe24746ab2c303fbc"
@@ -11206,6 +11387,11 @@ whatwg-fetch@^2.0.4:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/whatwg-fetch/-/whatwg-fetch-2.0.4.tgz#dde6a5df315f9d39991aa17621853d720b85566f"
 
+whatwg-fetch@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/whatwg-fetch/-/whatwg-fetch-3.0.0.tgz#fc804e458cc460009b1a2b966bc8817d2578aefb"
+  integrity sha512-9GSJUgz1D4MfyKU7KRqwOjXCXTqWdFNvEr7eUBYchQiVc744mqK/MzXPNR2WsPkmkOa4ywfg8C2n8h+13Bey1Q==
+
 whatwg-mimetype@^2.0.0, whatwg-mimetype@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/whatwg-mimetype/-/whatwg-mimetype-2.1.0.tgz#f0f21d76cbba72362eb609dbed2a30cd17fcc7d4"