From 7561bc703cc6ac1d2fc097d1197001c7192b8a39 Mon Sep 17 00:00:00 2001
From: x8x <github@reboot.ch>
Date: Tue, 4 Sep 2018 13:01:50 +0700
Subject: [PATCH] Feat: Update for optimize-css-assets-webpack-plugin 5.0
 compatibility.

---
 .../core/lib/webpack/createClientConfig.js    |   3 +-
 packages/@vuepress/core/package.json          |   5 +-
 yarn.lock                                     | 561 +++++++++++++++++-
 3 files changed, 550 insertions(+), 19 deletions(-)

diff --git a/packages/@vuepress/core/lib/webpack/createClientConfig.js b/packages/@vuepress/core/lib/webpack/createClientConfig.js
index 40eafc0ec2..32fd084cb5 100644
--- a/packages/@vuepress/core/lib/webpack/createClientConfig.js
+++ b/packages/@vuepress/core/lib/webpack/createClientConfig.js
@@ -1,5 +1,6 @@
 module.exports = function createClientConfig (options, cliOptions) {
   const path = require('path')
+  const safeParser = require('postcss-safe-parser')
   const WebpackBar = require('webpackbar')
   const createBaseConfig = require('./createBaseConfig')
 
@@ -44,7 +45,7 @@ module.exports = function createClientConfig (options, cliOptions) {
       .use(require('optimize-css-assets-webpack-plugin'), [{
         canPrint: false,
         cssProcessorOptions: {
-          safe: true,
+          parser: safeParser,
           autoprefixer: { disable: true },
           mergeLonghand: false
         }
diff --git a/packages/@vuepress/core/package.json b/packages/@vuepress/core/package.json
index 70076f6f96..130130fdb5 100644
--- a/packages/@vuepress/core/package.json
+++ b/packages/@vuepress/core/package.json
@@ -21,9 +21,9 @@
   "dependencies": {
     "@babel/core": "7.0.0-beta.47",
     "@vue/babel-preset-app": "3.0.0-beta.11",
-    "@vuepress/shared-utils": "^1.0.0",
     "@vuepress/plugin-last-updated": "^1.0.0",
     "@vuepress/plugin-register-components": "^1.0.0",
+    "@vuepress/shared-utils": "^1.0.0",
     "autoprefixer": "^8.2.0",
     "babel-loader": "8.0.0-beta.3",
     "cache-loader": "^1.2.2",
@@ -51,9 +51,10 @@
     "markdown-it-emoji": "^1.4.0",
     "markdown-it-table-of-contents": "^0.4.0",
     "mini-css-extract-plugin": "^0.4.1",
-    "optimize-css-assets-webpack-plugin": "^4.0.0",
+    "optimize-css-assets-webpack-plugin": "^5.0.1",
     "portfinder": "^1.0.13",
     "postcss-loader": "^2.1.5",
+    "postcss-safe-parser": "^4.0.1",
     "prismjs": "^1.13.0",
     "toml": "^2.3.3",
     "url-loader": "^1.0.1",
diff --git a/yarn.lock b/yarn.lock
index 4c68320a22..79b7ce70fc 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1594,7 +1594,7 @@ align-text@^0.1.1, align-text@^0.1.3:
     longest "^1.0.1"
     repeat-string "^1.5.2"
 
-alphanum-sort@^1.0.1, alphanum-sort@^1.0.2:
+alphanum-sort@^1.0.0, alphanum-sort@^1.0.1, alphanum-sort@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/alphanum-sort/-/alphanum-sort-1.0.2.tgz#97a1119649b211ad33691d9f9f486a8ec9fbe0a3"
 
@@ -2083,7 +2083,7 @@ bn.js@^4.0.0, bn.js@^4.1.0, bn.js@^4.1.1, bn.js@^4.4.0:
   version "4.11.8"
   resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.8.tgz#2cde09eb5ee341f484746bb0309b3253b1b1442f"
 
-boolbase@~1.0.0:
+boolbase@^1.0.0, boolbase@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/boolbase/-/boolbase-1.0.0.tgz#68dff5fbe60c51eb37725ea9e3ed310dcc1e776e"
 
@@ -2210,6 +2210,14 @@ browserslist@^3.0.0, browserslist@^3.2.8:
     caniuse-lite "^1.0.30000844"
     electron-to-chromium "^1.3.47"
 
+browserslist@^4.0.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-4.1.0.tgz#81cbb8e52dfa09918f93c6e051d779cb7360785d"
+  dependencies:
+    caniuse-lite "^1.0.30000878"
+    electron-to-chromium "^1.3.61"
+    node-releases "^1.0.0-alpha.11"
+
 bser@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/bser/-/bser-2.0.0.tgz#9ac78d3ed5d915804fd87acb158bc797147a1719"
@@ -2346,10 +2354,23 @@ caniuse-api@^1.5.2:
     lodash.memoize "^4.1.2"
     lodash.uniq "^4.5.0"
 
+caniuse-api@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/caniuse-api/-/caniuse-api-3.0.0.tgz#5e4d90e2274961d46291997df599e3ed008ee4c0"
+  dependencies:
+    browserslist "^4.0.0"
+    caniuse-lite "^1.0.0"
+    lodash.memoize "^4.1.2"
+    lodash.uniq "^4.5.0"
+
 caniuse-db@^1.0.30000529, caniuse-db@^1.0.30000634, caniuse-db@^1.0.30000639:
   version "1.0.30000864"
   resolved "https://registry.yarnpkg.com/caniuse-db/-/caniuse-db-1.0.30000864.tgz#35a4b2325a8d4553a46b516dbc233bf391d75555"
 
+caniuse-lite@^1.0.0, caniuse-lite@^1.0.30000878:
+  version "1.0.30000884"
+  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30000884.tgz#eb82a959698745033b26a4dcd34d89dba7cc6eb3"
+
 caniuse-lite@^1.0.30000844, caniuse-lite@^1.0.30000864:
   version "1.0.30000864"
   resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30000864.tgz#7a08c78da670f23c06f11aa918831b8f2dd60ddc"
@@ -2557,6 +2578,12 @@ coa@~1.0.1:
   dependencies:
     q "^1.1.2"
 
+coa@~2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/coa/-/coa-2.0.1.tgz#f3f8b0b15073e35d70263fb1042cb2c023db38af"
+  dependencies:
+    q "^1.1.2"
+
 code-point-at@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
@@ -2574,11 +2601,17 @@ color-convert@^1.3.0, color-convert@^1.9.0:
   dependencies:
     color-name "1.1.1"
 
+color-convert@^1.9.1:
+  version "1.9.3"
+  resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-1.9.3.tgz#bb71850690e1f136567de629d2d5471deda4c1e8"
+  dependencies:
+    color-name "1.1.3"
+
 color-name@1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.1.tgz#4b1415304cf50028ea81643643bd82ea05803689"
 
-color-name@^1.0.0:
+color-name@1.1.3, color-name@^1.0.0:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
 
@@ -2588,6 +2621,13 @@ color-string@^0.3.0:
   dependencies:
     color-name "^1.0.0"
 
+color-string@^1.5.2:
+  version "1.5.3"
+  resolved "https://registry.yarnpkg.com/color-string/-/color-string-1.5.3.tgz#c9bbc5f01b58b5492f3d6857459cb6590ce204cc"
+  dependencies:
+    color-name "^1.0.0"
+    simple-swizzle "^0.2.2"
+
 color@^0.11.0:
   version "0.11.4"
   resolved "https://registry.yarnpkg.com/color/-/color-0.11.4.tgz#6d7b5c74fb65e841cd48792ad1ed5e07b904d764"
@@ -2596,6 +2636,13 @@ color@^0.11.0:
     color-convert "^1.3.0"
     color-string "^0.3.0"
 
+color@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/color/-/color-3.0.0.tgz#d920b4328d534a3ac8295d68f7bd4ba6c427be9a"
+  dependencies:
+    color-convert "^1.9.1"
+    color-string "^1.5.2"
+
 colormin@^1.0.5:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/colormin/-/colormin-1.1.2.tgz#ea2f7420a72b96881a38aae59ec124a6f7298133"
@@ -2946,6 +2993,14 @@ cosmiconfig@^4.0.0:
     parse-json "^4.0.0"
     require-from-string "^2.0.1"
 
+cosmiconfig@^5.0.0:
+  version "5.0.6"
+  resolved "https://registry.yarnpkg.com/cosmiconfig/-/cosmiconfig-5.0.6.tgz#dca6cf680a0bd03589aff684700858c81abeeb39"
+  dependencies:
+    is-directory "^0.3.1"
+    js-yaml "^3.9.0"
+    parse-json "^4.0.0"
+
 cosmiconfig@^5.0.2:
   version "5.0.5"
   resolved "https://registry.yarnpkg.com/cosmiconfig/-/cosmiconfig-5.0.5.tgz#a809e3c2306891ce17ab70359dc8bdf661fe2cd0"
@@ -3026,10 +3081,17 @@ crypto-random-string@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/crypto-random-string/-/crypto-random-string-1.0.0.tgz#a230f64f568310e1498009940790ec99545bca7e"
 
-css-color-names@0.0.4:
+css-color-names@0.0.4, css-color-names@^0.0.4:
   version "0.0.4"
   resolved "https://registry.yarnpkg.com/css-color-names/-/css-color-names-0.0.4.tgz#808adc2e79cf84738069b646cb20ec27beb629e0"
 
+css-declaration-sorter@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/css-declaration-sorter/-/css-declaration-sorter-3.0.1.tgz#d0e3056b0fd88dc1ea9dceff435adbe9c702a7f8"
+  dependencies:
+    postcss "^6.0.0"
+    timsort "^0.3.0"
+
 css-loader@^0.28.11:
   version "0.28.11"
   resolved "https://registry.yarnpkg.com/css-loader/-/css-loader-0.28.11.tgz#c3f9864a700be2711bb5a2462b2389b1a392dab7"
@@ -3053,6 +3115,10 @@ css-parse@1.7.x:
   version "1.7.0"
   resolved "https://registry.yarnpkg.com/css-parse/-/css-parse-1.7.0.tgz#321f6cf73782a6ff751111390fc05e2c657d8c9b"
 
+css-select-base-adapter@~0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/css-select-base-adapter/-/css-select-base-adapter-0.1.0.tgz#0102b3d14630df86c3eb9fa9f5456270106cf990"
+
 css-select@^1.1.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/css-select/-/css-select-1.2.0.tgz#2b3a110539c5355f1cd8d314623e870b121ec858"
@@ -3062,6 +3128,15 @@ css-select@^1.1.0:
     domutils "1.5.1"
     nth-check "~1.0.1"
 
+css-select@~1.3.0-rc0:
+  version "1.3.0-rc0"
+  resolved "https://registry.yarnpkg.com/css-select/-/css-select-1.3.0-rc0.tgz#6f93196aaae737666ea1036a8cb14a8fcb7a9231"
+  dependencies:
+    boolbase "^1.0.0"
+    css-what "2.1"
+    domutils "1.5.1"
+    nth-check "^1.0.1"
+
 css-selector-tokenizer@^0.7.0:
   version "0.7.0"
   resolved "https://registry.yarnpkg.com/css-selector-tokenizer/-/css-selector-tokenizer-0.7.0.tgz#e6988474ae8c953477bf5e7efecfceccd9cf4c86"
@@ -3070,6 +3145,28 @@ css-selector-tokenizer@^0.7.0:
     fastparse "^1.1.1"
     regexpu-core "^1.0.0"
 
+css-tree@1.0.0-alpha.29:
+  version "1.0.0-alpha.29"
+  resolved "https://registry.yarnpkg.com/css-tree/-/css-tree-1.0.0-alpha.29.tgz#3fa9d4ef3142cbd1c301e7664c1f352bd82f5a39"
+  dependencies:
+    mdn-data "~1.1.0"
+    source-map "^0.5.3"
+
+css-tree@1.0.0-alpha25:
+  version "1.0.0-alpha25"
+  resolved "https://registry.yarnpkg.com/css-tree/-/css-tree-1.0.0-alpha25.tgz#1bbfabfbf6eeef4f01d9108ff2edd0be2fe35597"
+  dependencies:
+    mdn-data "^1.0.0"
+    source-map "^0.5.3"
+
+css-unit-converter@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/css-unit-converter/-/css-unit-converter-1.1.1.tgz#d9b9281adcfd8ced935bdbaba83786897f64e996"
+
+css-url-regex@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/css-url-regex/-/css-url-regex-1.1.0.tgz#83834230cc9f74c457de59eebd1543feeb83b7ec"
+
 css-what@2.1:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/css-what/-/css-what-2.1.0.tgz#9467d032c38cfaefb9f2d79501253062f87fa1bd"
@@ -3087,6 +3184,59 @@ cssesc@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/cssesc/-/cssesc-0.1.0.tgz#c814903e45623371a0477b40109aaafbeeaddbb4"
 
+cssnano-preset-default@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/cssnano-preset-default/-/cssnano-preset-default-4.0.0.tgz#c334287b4f7d49fb2d170a92f9214655788e3b6b"
+  dependencies:
+    css-declaration-sorter "^3.0.0"
+    cssnano-util-raw-cache "^4.0.0"
+    postcss "^6.0.0"
+    postcss-calc "^6.0.0"
+    postcss-colormin "^4.0.0"
+    postcss-convert-values "^4.0.0"
+    postcss-discard-comments "^4.0.0"
+    postcss-discard-duplicates "^4.0.0"
+    postcss-discard-empty "^4.0.0"
+    postcss-discard-overridden "^4.0.0"
+    postcss-merge-longhand "^4.0.0"
+    postcss-merge-rules "^4.0.0"
+    postcss-minify-font-values "^4.0.0"
+    postcss-minify-gradients "^4.0.0"
+    postcss-minify-params "^4.0.0"
+    postcss-minify-selectors "^4.0.0"
+    postcss-normalize-charset "^4.0.0"
+    postcss-normalize-display-values "^4.0.0"
+    postcss-normalize-positions "^4.0.0"
+    postcss-normalize-repeat-style "^4.0.0"
+    postcss-normalize-string "^4.0.0"
+    postcss-normalize-timing-functions "^4.0.0"
+    postcss-normalize-unicode "^4.0.0"
+    postcss-normalize-url "^4.0.0"
+    postcss-normalize-whitespace "^4.0.0"
+    postcss-ordered-values "^4.0.0"
+    postcss-reduce-initial "^4.0.0"
+    postcss-reduce-transforms "^4.0.0"
+    postcss-svgo "^4.0.0"
+    postcss-unique-selectors "^4.0.0"
+
+cssnano-util-get-arguments@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/cssnano-util-get-arguments/-/cssnano-util-get-arguments-4.0.0.tgz#ed3a08299f21d75741b20f3b81f194ed49cc150f"
+
+cssnano-util-get-match@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/cssnano-util-get-match/-/cssnano-util-get-match-4.0.0.tgz#c0e4ca07f5386bb17ec5e52250b4f5961365156d"
+
+cssnano-util-raw-cache@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/cssnano-util-raw-cache/-/cssnano-util-raw-cache-4.0.0.tgz#be0a2856e25f185f5f7a2bcc0624e28b7f179a9f"
+  dependencies:
+    postcss "^6.0.0"
+
+cssnano-util-same-parent@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/cssnano-util-same-parent/-/cssnano-util-same-parent-4.0.0.tgz#d2a3de1039aa98bc4ec25001fa050330c2a16dac"
+
 cssnano@^3.10.0:
   version "3.10.0"
   resolved "https://registry.yarnpkg.com/cssnano/-/cssnano-3.10.0.tgz#4f38f6cea2b9b17fa01490f23f1dc68ea65c1c38"
@@ -3124,6 +3274,21 @@ cssnano@^3.10.0:
     postcss-value-parser "^3.2.3"
     postcss-zindex "^2.0.1"
 
+cssnano@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/cssnano/-/cssnano-4.1.0.tgz#682c37b84b9b7df616450a5a8dc9269b9bd10734"
+  dependencies:
+    cosmiconfig "^5.0.0"
+    cssnano-preset-default "^4.0.0"
+    is-resolvable "^1.0.0"
+    postcss "^6.0.0"
+
+csso@^3.5.0:
+  version "3.5.1"
+  resolved "https://registry.yarnpkg.com/csso/-/csso-3.5.1.tgz#7b9eb8be61628973c1b261e169d2f024008e758b"
+  dependencies:
+    css-tree "1.0.0-alpha.29"
+
 csso@~2.3.1:
   version "2.3.2"
   resolved "https://registry.yarnpkg.com/csso/-/csso-2.3.2.tgz#ddd52c587033f49e94b71fc55569f252e8ff5f85"
@@ -3484,6 +3649,10 @@ electron-to-chromium@^1.2.7, electron-to-chromium@^1.3.47:
   version "1.3.51"
   resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.51.tgz#6a42b49daaf7f22a5b37b991daf949f34dbdb9b5"
 
+electron-to-chromium@^1.3.61:
+  version "1.3.62"
+  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.62.tgz#2e8e2dc070c800ec8ce23ff9dfcceb585d6f9ed8"
+
 elegant-spinner@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/elegant-spinner/-/elegant-spinner-1.0.1.tgz#db043521c95d7e303fd8f345bedc3349cfb0729e"
@@ -3551,7 +3720,7 @@ error-inject@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/error-inject/-/error-inject-1.0.0.tgz#e2b3d91b54aed672f309d950d154850fa11d4f37"
 
-es-abstract@^1.5.1:
+es-abstract@^1.5.1, es-abstract@^1.6.1:
   version "1.12.0"
   resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.12.0.tgz#9dbbdd27c6856f0001421ca18782d786bf8a6165"
   dependencies:
@@ -4136,7 +4305,7 @@ fsevents@^1.2.2, fsevents@^1.2.3:
     nan "^2.9.2"
     node-pre-gyp "^0.10.0"
 
-function-bind@^1.1.1:
+function-bind@^1.1.0, function-bind@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/function-bind/-/function-bind-1.1.1.tgz#a56899d3ea3c9bab874bb9773b7c5ede92f4895d"
 
@@ -4447,7 +4616,7 @@ has-values@^1.0.0:
     is-number "^3.0.0"
     kind-of "^4.0.0"
 
-has@^1.0.1:
+has@^1.0.0, has@^1.0.1:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/has/-/has-1.0.3.tgz#722d7cbfc1f6aa8241f16dd814e011e1f41e8796"
   dependencies:
@@ -4475,6 +4644,10 @@ he@1.1.x, he@^1.1.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/he/-/he-1.1.1.tgz#93410fd21b009735151f8868c2f271f3427e23fd"
 
+hex-color-regex@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/hex-color-regex/-/hex-color-regex-1.1.0.tgz#4c06fccb4602fe2602b3c93df82d7e7dbf1a8a8e"
+
 hmac-drbg@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/hmac-drbg/-/hmac-drbg-1.0.1.tgz#d2745701025a6c775a6c545793ed502fc0c649a1"
@@ -4505,6 +4678,14 @@ hosted-git-info@^2.1.4, hosted-git-info@^2.5.0:
   version "2.7.1"
   resolved "https://registry.yarnpkg.com/hosted-git-info/-/hosted-git-info-2.7.1.tgz#97f236977bd6e125408930ff6de3eec6281ec047"
 
+hsl-regex@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/hsl-regex/-/hsl-regex-1.0.0.tgz#d49330c789ed819e276a4c0d272dffa30b18fe6e"
+
+hsla-regex@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/hsla-regex/-/hsla-regex-1.0.0.tgz#c1ce7a3168c8c6614033a4b5f7877f3b225f9c38"
+
 html-comment-regex@^1.1.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/html-comment-regex/-/html-comment-regex-1.1.1.tgz#668b93776eaae55ebde8f3ad464b307a4963625e"
@@ -4723,6 +4904,10 @@ is-arrayish@^0.2.1:
   version "0.2.1"
   resolved "https://registry.yarnpkg.com/is-arrayish/-/is-arrayish-0.2.1.tgz#77c99840527aa8ecb1a8ba697b80645a7a926a9d"
 
+is-arrayish@^0.3.1:
+  version "0.3.2"
+  resolved "https://registry.yarnpkg.com/is-arrayish/-/is-arrayish-0.3.2.tgz#4574a2ae56f7ab206896fb431eaeed066fdf8f03"
+
 is-binary-path@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/is-binary-path/-/is-binary-path-1.0.1.tgz#75f16642b480f187a711c814161fd3a4a7655898"
@@ -4749,6 +4934,17 @@ is-ci@^1.0.10, is-ci@^1.1.0:
   dependencies:
     ci-info "^1.0.0"
 
+is-color-stop@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/is-color-stop/-/is-color-stop-1.1.0.tgz#cfff471aee4dd5c9e158598fbe12967b5cdad345"
+  dependencies:
+    css-color-names "^0.0.4"
+    hex-color-regex "^1.1.0"
+    hsl-regex "^1.0.0"
+    hsla-regex "^1.0.0"
+    rgb-regex "^1.0.1"
+    rgba-regex "^1.0.0"
+
 is-data-descriptor@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz#0b5ee648388e2c860282e793f1856fec3f301b56"
@@ -4970,6 +5166,12 @@ is-svg@^2.0.0:
   dependencies:
     html-comment-regex "^1.1.0"
 
+is-svg@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/is-svg/-/is-svg-3.0.0.tgz#9321dbd29c212e5ca99c4fa9794c714bcafa2f75"
+  dependencies:
+    html-comment-regex "^1.1.0"
+
 is-symbol@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/is-symbol/-/is-symbol-1.0.1.tgz#3cc59f00025194b6ab2e38dbae6689256b660572"
@@ -5449,6 +5651,13 @@ js-yaml@^3.11.0, js-yaml@^3.7.0, js-yaml@^3.9.0, js-yaml@^3.9.1:
     argparse "^1.0.7"
     esprima "^4.0.0"
 
+js-yaml@~3.10.0:
+  version "3.10.0"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.10.0.tgz#2e78441646bd4682e963f22b6e92823c309c62dc"
+  dependencies:
+    argparse "^1.0.7"
+    esprima "^4.0.0"
+
 js-yaml@~3.7.0:
   version "3.7.0"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.7.0.tgz#5c967ddd837a9bfdca5f2de84253abe8a1c03b80"
@@ -6102,6 +6311,14 @@ md5.js@^1.3.4:
     hash-base "^3.0.0"
     inherits "^2.0.1"
 
+mdn-data@^1.0.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/mdn-data/-/mdn-data-1.2.0.tgz#eadd28b0f2d307cf27e71524609bfb749ebfc0b6"
+
+mdn-data@~1.1.0:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/mdn-data/-/mdn-data-1.1.4.tgz#50b5d4ffc4575276573c4eedb8780812a8419f01"
+
 mdurl@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/mdurl/-/mdurl-1.0.1.tgz#fe85b2ec75a59037f2adfec100fd6c601761152e"
@@ -6539,6 +6756,12 @@ node-pre-gyp@^0.10.0:
     semver "^5.3.0"
     tar "^4"
 
+node-releases@^1.0.0-alpha.11:
+  version "1.0.0-alpha.11"
+  resolved "https://registry.yarnpkg.com/node-releases/-/node-releases-1.0.0-alpha.11.tgz#73c810acc2e5b741a17ddfbb39dfca9ab9359d8a"
+  dependencies:
+    semver "^5.3.0"
+
 nopt@1.0.10:
   version "1.0.10"
   resolved "https://registry.yarnpkg.com/nopt/-/nopt-1.0.10.tgz#6ddd21bd2a31417b92727dd585f8a6f37608ebee"
@@ -6590,6 +6813,10 @@ normalize-url@^1.4.0:
     query-string "^4.1.0"
     sort-keys "^1.0.0"
 
+normalize-url@^3.0.0:
+  version "3.3.0"
+  resolved "https://registry.yarnpkg.com/normalize-url/-/normalize-url-3.3.0.tgz#b2e1c4dc4f7c6d57743df733a4f5978d18650559"
+
 npm-bundled@^1.0.1:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/npm-bundled/-/npm-bundled-1.0.3.tgz#7e71703d973af3370a9591bafe3a63aca0be2308"
@@ -6634,7 +6861,7 @@ nprogress@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/nprogress/-/nprogress-0.2.0.tgz#cb8f34c53213d895723fcbab907e9422adbcafb1"
 
-nth-check@~1.0.1:
+nth-check@^1.0.1, nth-check@~1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/nth-check/-/nth-check-1.0.1.tgz#9929acdf628fc2c41098deab82ac580cf149aae4"
   dependencies:
@@ -6711,6 +6938,15 @@ object.pick@^1.3.0:
   dependencies:
     isobject "^3.0.1"
 
+object.values@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/object.values/-/object.values-1.0.4.tgz#e524da09b4f66ff05df457546ec72ac99f13069a"
+  dependencies:
+    define-properties "^1.1.2"
+    es-abstract "^1.6.1"
+    function-bind "^1.1.0"
+    has "^1.0.1"
+
 on-finished@^2.1.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/on-finished/-/on-finished-2.3.0.tgz#20f1336481b083cd75337992a16971aa2d906947"
@@ -6750,11 +6986,11 @@ optimist@^0.6.1:
     minimist "~0.0.1"
     wordwrap "~0.0.2"
 
-optimize-css-assets-webpack-plugin@^4.0.0:
-  version "4.0.3"
-  resolved "https://registry.yarnpkg.com/optimize-css-assets-webpack-plugin/-/optimize-css-assets-webpack-plugin-4.0.3.tgz#4f714e276b279700892c4a6202b7e22812d6f683"
+optimize-css-assets-webpack-plugin@^5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/optimize-css-assets-webpack-plugin/-/optimize-css-assets-webpack-plugin-5.0.1.tgz#9eb500711d35165b45e7fd60ba2df40cb3eb9159"
   dependencies:
-    cssnano "^3.10.0"
+    cssnano "^4.1.0"
     last-call-webpack-plugin "^3.0.0"
 
 optionator@^0.8.1, optionator@^0.8.2:
@@ -7029,6 +7265,15 @@ postcss-calc@^5.2.0:
     postcss-message-helpers "^2.0.0"
     reduce-css-calc "^1.2.6"
 
+postcss-calc@^6.0.0:
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/postcss-calc/-/postcss-calc-6.0.1.tgz#3d24171bbf6e7629d422a436ebfe6dd9511f4330"
+  dependencies:
+    css-unit-converter "^1.1.1"
+    postcss "^6.0.0"
+    postcss-selector-parser "^2.2.2"
+    reduce-css-calc "^2.0.0"
+
 postcss-colormin@^2.1.8:
   version "2.2.2"
   resolved "https://registry.yarnpkg.com/postcss-colormin/-/postcss-colormin-2.2.2.tgz#6631417d5f0e909a3d7ec26b24c8a8d1e4f96e4b"
@@ -7037,6 +7282,16 @@ postcss-colormin@^2.1.8:
     postcss "^5.0.13"
     postcss-value-parser "^3.2.3"
 
+postcss-colormin@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/postcss-colormin/-/postcss-colormin-4.0.1.tgz#6f1c18a0155bc69613f2ff13843e2e4ae8ff0bbe"
+  dependencies:
+    browserslist "^4.0.0"
+    color "^3.0.0"
+    has "^1.0.0"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
 postcss-convert-values@^2.3.4:
   version "2.6.1"
   resolved "https://registry.yarnpkg.com/postcss-convert-values/-/postcss-convert-values-2.6.1.tgz#bbd8593c5c1fd2e3d1c322bb925dcae8dae4d62d"
@@ -7044,30 +7299,61 @@ postcss-convert-values@^2.3.4:
     postcss "^5.0.11"
     postcss-value-parser "^3.1.2"
 
+postcss-convert-values@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-convert-values/-/postcss-convert-values-4.0.0.tgz#77d77d9aed1dc4e6956e651cc349d53305876f62"
+  dependencies:
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
 postcss-discard-comments@^2.0.4:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/postcss-discard-comments/-/postcss-discard-comments-2.0.4.tgz#befe89fafd5b3dace5ccce51b76b81514be00e3d"
   dependencies:
     postcss "^5.0.14"
 
+postcss-discard-comments@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-discard-comments/-/postcss-discard-comments-4.0.0.tgz#9684a299e76b3e93263ef8fd2adbf1a1c08fd88d"
+  dependencies:
+    postcss "^6.0.0"
+
 postcss-discard-duplicates@^2.0.1:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/postcss-discard-duplicates/-/postcss-discard-duplicates-2.1.0.tgz#b9abf27b88ac188158a5eb12abcae20263b91932"
   dependencies:
     postcss "^5.0.4"
 
+postcss-discard-duplicates@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-discard-duplicates/-/postcss-discard-duplicates-4.0.0.tgz#42f3c267f85fa909e042c35767ecfd65cb2bd72c"
+  dependencies:
+    postcss "^6.0.0"
+
 postcss-discard-empty@^2.0.1:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/postcss-discard-empty/-/postcss-discard-empty-2.1.0.tgz#d2b4bd9d5ced5ebd8dcade7640c7d7cd7f4f92b5"
   dependencies:
     postcss "^5.0.14"
 
+postcss-discard-empty@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-discard-empty/-/postcss-discard-empty-4.0.0.tgz#55e18a59c74128e38c7d2804bcfa4056611fb97f"
+  dependencies:
+    postcss "^6.0.0"
+
 postcss-discard-overridden@^0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/postcss-discard-overridden/-/postcss-discard-overridden-0.1.1.tgz#8b1eaf554f686fb288cd874c55667b0aa3668d58"
   dependencies:
     postcss "^5.0.16"
 
+postcss-discard-overridden@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-discard-overridden/-/postcss-discard-overridden-4.0.0.tgz#4a0bf85978784cf1f81ed2c1c1fd9d964a1da1fa"
+  dependencies:
+    postcss "^6.0.0"
+
 postcss-discard-unused@^2.2.1:
   version "2.2.3"
   resolved "https://registry.yarnpkg.com/postcss-discard-unused/-/postcss-discard-unused-2.2.3.tgz#bce30b2cc591ffc634322b5fb3464b6d934f4433"
@@ -7111,6 +7397,15 @@ postcss-merge-longhand@^2.0.1:
   dependencies:
     postcss "^5.0.4"
 
+postcss-merge-longhand@^4.0.0:
+  version "4.0.5"
+  resolved "https://registry.yarnpkg.com/postcss-merge-longhand/-/postcss-merge-longhand-4.0.5.tgz#00898d72347fc7e40bb564b11bdc08119c599b59"
+  dependencies:
+    css-color-names "0.0.4"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+    stylehacks "^4.0.0"
+
 postcss-merge-rules@^2.0.3:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/postcss-merge-rules/-/postcss-merge-rules-2.1.2.tgz#d1df5dfaa7b1acc3be553f0e9e10e87c61b5f721"
@@ -7121,6 +7416,17 @@ postcss-merge-rules@^2.0.3:
     postcss-selector-parser "^2.2.2"
     vendors "^1.0.0"
 
+postcss-merge-rules@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/postcss-merge-rules/-/postcss-merge-rules-4.0.1.tgz#430fd59b3f2ed2e8afcd0b31278eda39854abb10"
+  dependencies:
+    browserslist "^4.0.0"
+    caniuse-api "^3.0.0"
+    cssnano-util-same-parent "^4.0.0"
+    postcss "^6.0.0"
+    postcss-selector-parser "^3.0.0"
+    vendors "^1.0.0"
+
 postcss-message-helpers@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/postcss-message-helpers/-/postcss-message-helpers-2.0.0.tgz#a4f2f4fab6e4fe002f0aed000478cdf52f9ba60e"
@@ -7133,6 +7439,13 @@ postcss-minify-font-values@^1.0.2:
     postcss "^5.0.4"
     postcss-value-parser "^3.0.2"
 
+postcss-minify-font-values@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-minify-font-values/-/postcss-minify-font-values-4.0.0.tgz#4cc33d283d6a81759036e757ef981d92cbd85bed"
+  dependencies:
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
 postcss-minify-gradients@^1.0.1:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/postcss-minify-gradients/-/postcss-minify-gradients-1.0.5.tgz#5dbda11373703f83cfb4a3ea3881d8d75ff5e6e1"
@@ -7140,6 +7453,15 @@ postcss-minify-gradients@^1.0.1:
     postcss "^5.0.12"
     postcss-value-parser "^3.3.0"
 
+postcss-minify-gradients@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-minify-gradients/-/postcss-minify-gradients-4.0.0.tgz#3fc3916439d27a9bb8066db7cdad801650eb090e"
+  dependencies:
+    cssnano-util-get-arguments "^4.0.0"
+    is-color-stop "^1.0.0"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
 postcss-minify-params@^1.0.4:
   version "1.2.2"
   resolved "https://registry.yarnpkg.com/postcss-minify-params/-/postcss-minify-params-1.2.2.tgz#ad2ce071373b943b3d930a3fa59a358c28d6f1f3"
@@ -7149,6 +7471,16 @@ postcss-minify-params@^1.0.4:
     postcss-value-parser "^3.0.2"
     uniqs "^2.0.0"
 
+postcss-minify-params@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-minify-params/-/postcss-minify-params-4.0.0.tgz#05e9166ee48c05af651989ce84d39c1b4d790674"
+  dependencies:
+    alphanum-sort "^1.0.0"
+    cssnano-util-get-arguments "^4.0.0"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+    uniqs "^2.0.0"
+
 postcss-minify-selectors@^2.0.4:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/postcss-minify-selectors/-/postcss-minify-selectors-2.1.1.tgz#b2c6a98c0072cf91b932d1a496508114311735bf"
@@ -7158,6 +7490,15 @@ postcss-minify-selectors@^2.0.4:
     postcss "^5.0.14"
     postcss-selector-parser "^2.0.0"
 
+postcss-minify-selectors@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-minify-selectors/-/postcss-minify-selectors-4.0.0.tgz#b1e9f6c463416d3fcdcb26e7b785d95f61578aad"
+  dependencies:
+    alphanum-sort "^1.0.0"
+    has "^1.0.0"
+    postcss "^6.0.0"
+    postcss-selector-parser "^3.0.0"
+
 postcss-modules-extract-imports@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/postcss-modules-extract-imports/-/postcss-modules-extract-imports-1.2.0.tgz#66140ecece38ef06bf0d3e355d69bf59d141ea85"
@@ -7191,6 +7532,61 @@ postcss-normalize-charset@^1.1.0:
   dependencies:
     postcss "^5.0.5"
 
+postcss-normalize-charset@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-normalize-charset/-/postcss-normalize-charset-4.0.0.tgz#24527292702d5e8129eafa3d1de49ed51a6ab730"
+  dependencies:
+    postcss "^6.0.0"
+
+postcss-normalize-display-values@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-normalize-display-values/-/postcss-normalize-display-values-4.0.0.tgz#950e0c7be3445770a160fffd6b6644c3c0cd8f89"
+  dependencies:
+    cssnano-util-get-match "^4.0.0"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
+postcss-normalize-positions@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-normalize-positions/-/postcss-normalize-positions-4.0.0.tgz#ee9343ab981b822c63ab72615ecccd08564445a3"
+  dependencies:
+    cssnano-util-get-arguments "^4.0.0"
+    has "^1.0.0"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
+postcss-normalize-repeat-style@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-normalize-repeat-style/-/postcss-normalize-repeat-style-4.0.0.tgz#b711c592cf16faf9ff575e42fa100b6799083eff"
+  dependencies:
+    cssnano-util-get-arguments "^4.0.0"
+    cssnano-util-get-match "^4.0.0"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
+postcss-normalize-string@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-normalize-string/-/postcss-normalize-string-4.0.0.tgz#718cb6d30a6fac6ac6a830e32c06c07dbc66fe5d"
+  dependencies:
+    has "^1.0.0"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
+postcss-normalize-timing-functions@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-normalize-timing-functions/-/postcss-normalize-timing-functions-4.0.0.tgz#0351f29886aa981d43d91b2c2bd1aea6d0af6d23"
+  dependencies:
+    cssnano-util-get-match "^4.0.0"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
+postcss-normalize-unicode@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-normalize-unicode/-/postcss-normalize-unicode-4.0.0.tgz#5acd5d47baea5d17674b2ccc4ae5166fa88cdf97"
+  dependencies:
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
 postcss-normalize-url@^3.0.7:
   version "3.0.8"
   resolved "https://registry.yarnpkg.com/postcss-normalize-url/-/postcss-normalize-url-3.0.8.tgz#108f74b3f2fcdaf891a2ffa3ea4592279fc78222"
@@ -7200,6 +7596,22 @@ postcss-normalize-url@^3.0.7:
     postcss "^5.0.14"
     postcss-value-parser "^3.2.3"
 
+postcss-normalize-url@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-normalize-url/-/postcss-normalize-url-4.0.0.tgz#b7a9c8ad26cf26694c146eb2d68bd0cf49956f0d"
+  dependencies:
+    is-absolute-url "^2.0.0"
+    normalize-url "^3.0.0"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
+postcss-normalize-whitespace@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-normalize-whitespace/-/postcss-normalize-whitespace-4.0.0.tgz#1da7e76b10ae63c11827fa04fc3bb4a1efe99cc0"
+  dependencies:
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
 postcss-ordered-values@^2.1.0:
   version "2.2.3"
   resolved "https://registry.yarnpkg.com/postcss-ordered-values/-/postcss-ordered-values-2.2.3.tgz#eec6c2a67b6c412a8db2042e77fe8da43f95c11d"
@@ -7207,6 +7619,14 @@ postcss-ordered-values@^2.1.0:
     postcss "^5.0.4"
     postcss-value-parser "^3.0.1"
 
+postcss-ordered-values@^4.0.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/postcss-ordered-values/-/postcss-ordered-values-4.1.0.tgz#2c769d5d44aa3c7c907b8be2e997ed19dfd8d50a"
+  dependencies:
+    cssnano-util-get-arguments "^4.0.0"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
 postcss-reduce-idents@^2.2.2:
   version "2.4.0"
   resolved "https://registry.yarnpkg.com/postcss-reduce-idents/-/postcss-reduce-idents-2.4.0.tgz#c2c6d20cc958284f6abfbe63f7609bf409059ad3"
@@ -7220,6 +7640,15 @@ postcss-reduce-initial@^1.0.0:
   dependencies:
     postcss "^5.0.4"
 
+postcss-reduce-initial@^4.0.0:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/postcss-reduce-initial/-/postcss-reduce-initial-4.0.1.tgz#f2d58f50cea2b0c5dc1278d6ea5ed0ff5829c293"
+  dependencies:
+    browserslist "^4.0.0"
+    caniuse-api "^3.0.0"
+    has "^1.0.0"
+    postcss "^6.0.0"
+
 postcss-reduce-transforms@^1.0.3:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/postcss-reduce-transforms/-/postcss-reduce-transforms-1.0.4.tgz#ff76f4d8212437b31c298a42d2e1444025771ae1"
@@ -7228,6 +7657,21 @@ postcss-reduce-transforms@^1.0.3:
     postcss "^5.0.8"
     postcss-value-parser "^3.0.1"
 
+postcss-reduce-transforms@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-reduce-transforms/-/postcss-reduce-transforms-4.0.0.tgz#f645fc7440c35274f40de8104e14ad7163edf188"
+  dependencies:
+    cssnano-util-get-match "^4.0.0"
+    has "^1.0.0"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+
+postcss-safe-parser@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/postcss-safe-parser/-/postcss-safe-parser-4.0.1.tgz#8756d9e4c36fdce2c72b091bbc8ca176ab1fcdea"
+  dependencies:
+    postcss "^7.0.0"
+
 postcss-selector-parser@^2.0.0, postcss-selector-parser@^2.2.2:
   version "2.2.3"
   resolved "https://registry.yarnpkg.com/postcss-selector-parser/-/postcss-selector-parser-2.2.3.tgz#f9437788606c3c9acee16ffe8d8b16297f27bb90"
@@ -7236,7 +7680,7 @@ postcss-selector-parser@^2.0.0, postcss-selector-parser@^2.2.2:
     indexes-of "^1.0.1"
     uniq "^1.0.1"
 
-postcss-selector-parser@^3.1.1:
+postcss-selector-parser@^3.0.0, postcss-selector-parser@^3.1.1:
   version "3.1.1"
   resolved "https://registry.yarnpkg.com/postcss-selector-parser/-/postcss-selector-parser-3.1.1.tgz#4f875f4afb0c96573d5cf4d74011aee250a7e865"
   dependencies:
@@ -7253,6 +7697,15 @@ postcss-svgo@^2.1.1:
     postcss-value-parser "^3.2.3"
     svgo "^0.7.0"
 
+postcss-svgo@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-svgo/-/postcss-svgo-4.0.0.tgz#c0bbad02520fc636c9d78b0e8403e2e515c32285"
+  dependencies:
+    is-svg "^3.0.0"
+    postcss "^6.0.0"
+    postcss-value-parser "^3.0.0"
+    svgo "^1.0.0"
+
 postcss-unique-selectors@^2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/postcss-unique-selectors/-/postcss-unique-selectors-2.0.2.tgz#981d57d29ddcb33e7b1dfe1fd43b8649f933ca1d"
@@ -7261,7 +7714,15 @@ postcss-unique-selectors@^2.0.2:
     postcss "^5.0.4"
     uniqs "^2.0.0"
 
-postcss-value-parser@^3.0.1, postcss-value-parser@^3.0.2, postcss-value-parser@^3.1.1, postcss-value-parser@^3.1.2, postcss-value-parser@^3.2.3, postcss-value-parser@^3.3.0:
+postcss-unique-selectors@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-unique-selectors/-/postcss-unique-selectors-4.0.0.tgz#04c1e9764c75874261303402c41f0e9769fc5501"
+  dependencies:
+    alphanum-sort "^1.0.0"
+    postcss "^6.0.0"
+    uniqs "^2.0.0"
+
+postcss-value-parser@^3.0.0, postcss-value-parser@^3.0.1, postcss-value-parser@^3.0.2, postcss-value-parser@^3.1.1, postcss-value-parser@^3.1.2, postcss-value-parser@^3.2.3, postcss-value-parser@^3.3.0:
   version "3.3.0"
   resolved "https://registry.yarnpkg.com/postcss-value-parser/-/postcss-value-parser-3.3.0.tgz#87f38f9f18f774a4ab4c8a232f5c5ce8872a9d15"
 
@@ -7298,6 +7759,14 @@ postcss@^6.0.1:
     source-map "^0.6.1"
     supports-color "^5.4.0"
 
+postcss@^7.0.0:
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-7.0.2.tgz#7b5a109de356804e27f95a960bef0e4d5bc9bb18"
+  dependencies:
+    chalk "^2.4.1"
+    source-map "^0.6.1"
+    supports-color "^5.4.0"
+
 prelude-ls@~1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
@@ -7614,6 +8083,13 @@ reduce-css-calc@^1.2.6:
     math-expression-evaluator "^1.2.14"
     reduce-function-call "^1.0.1"
 
+reduce-css-calc@^2.0.0:
+  version "2.1.4"
+  resolved "https://registry.yarnpkg.com/reduce-css-calc/-/reduce-css-calc-2.1.4.tgz#c20e9cda8445ad73d4ff4bea960c6f8353791708"
+  dependencies:
+    css-unit-converter "^1.1.1"
+    postcss-value-parser "^3.3.0"
+
 reduce-function-call@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/reduce-function-call/-/reduce-function-call-1.0.2.tgz#5a200bf92e0e37751752fe45b0ab330fd4b6be99"
@@ -7872,6 +8348,14 @@ ret@~0.1.10:
   version "0.1.15"
   resolved "https://registry.yarnpkg.com/ret/-/ret-0.1.15.tgz#b8a4825d5bdb1fc3f6f53c2bc33f81388681c7bc"
 
+rgb-regex@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/rgb-regex/-/rgb-regex-1.0.1.tgz#c0e0d6882df0e23be254a475e8edd41915feaeb1"
+
+rgba-regex@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/rgba-regex/-/rgba-regex-1.0.0.tgz#43374e2e2ca0968b0ef1523460b7d730ff22eeb3"
+
 right-align@^0.1.1:
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/right-align/-/right-align-0.1.3.tgz#61339b722fe6a3515689210d24e14c96148613ef"
@@ -7956,7 +8440,7 @@ sax@0.5.x:
   version "0.5.8"
   resolved "https://registry.yarnpkg.com/sax/-/sax-0.5.8.tgz#d472db228eb331c2506b0e8c15524adb939d12c1"
 
-sax@^1.2.4, sax@~1.2.1:
+sax@^1.2.4, sax@~1.2.1, sax@~1.2.4:
   version "1.2.4"
   resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.4.tgz#2816234e2378bddc4e5354fab5caa895df7100d9"
 
@@ -8059,6 +8543,12 @@ signal-exit@^3.0.0, signal-exit@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.2.tgz#b5fdc08f1287ea1178628e415e25132b73646c6d"
 
+simple-swizzle@^0.2.2:
+  version "0.2.2"
+  resolved "https://registry.yarnpkg.com/simple-swizzle/-/simple-swizzle-0.2.2.tgz#a4da6b635ffcccca33f70d17cb92592de95e557a"
+  dependencies:
+    is-arrayish "^0.3.1"
+
 sisteransi@^0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/sisteransi/-/sisteransi-0.1.1.tgz#5431447d5f7d1675aac667ccd0b865a4994cb3ce"
@@ -8236,6 +8726,10 @@ ssri@^5.2.4:
   dependencies:
     safe-buffer "^5.1.1"
 
+stable@~0.1.6:
+  version "0.1.8"
+  resolved "https://registry.yarnpkg.com/stable/-/stable-0.1.8.tgz#836eb3c8382fe2936feaf544631017ce7d47a3cf"
+
 stack-utils@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/stack-utils/-/stack-utils-1.0.1.tgz#d4f33ab54e8e38778b0ca5cfd3b3afb12db68620"
@@ -8399,6 +8893,14 @@ strong-log-transformer@^1.0.6:
     moment "^2.6.0"
     through "^2.3.4"
 
+stylehacks@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/stylehacks/-/stylehacks-4.0.0.tgz#64b323951c4a24e5fc7b2ec06c137bf32d155e8a"
+  dependencies:
+    browserslist "^4.0.0"
+    postcss "^6.0.0"
+    postcss-selector-parser "^3.0.0"
+
 stylus-loader@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/stylus-loader/-/stylus-loader-3.0.2.tgz#27a706420b05a38e038e7cacb153578d450513c6"
@@ -8446,6 +8948,25 @@ svgo@^0.7.0:
     sax "~1.2.1"
     whet.extend "~0.9.9"
 
+svgo@^1.0.0:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/svgo/-/svgo-1.0.5.tgz#7040364c062a0538abacff4401cea6a26a7a389a"
+  dependencies:
+    coa "~2.0.1"
+    colors "~1.1.2"
+    css-select "~1.3.0-rc0"
+    css-select-base-adapter "~0.1.0"
+    css-tree "1.0.0-alpha25"
+    css-url-regex "^1.1.0"
+    csso "^3.5.0"
+    js-yaml "~3.10.0"
+    mkdirp "~0.5.1"
+    object.values "^1.0.4"
+    sax "~1.2.4"
+    stable "~0.1.6"
+    unquote "~1.1.1"
+    util.promisify "~1.0.0"
+
 symbol-observable@^1.1.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/symbol-observable/-/symbol-observable-1.2.0.tgz#c22688aed4eab3cdc2dfeacbb561660560a00804"
@@ -8579,6 +9100,10 @@ timers-browserify@^2.0.4:
   dependencies:
     setimmediate "^1.0.4"
 
+timsort@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/timsort/-/timsort-0.3.0.tgz#405411a8e7e6339fe64db9a234de11dc31e02bd4"
+
 tiny-emitter@^2.0.0:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/tiny-emitter/-/tiny-emitter-2.0.2.tgz#82d27468aca5ade8e5fd1e6d22b57dd43ebdfb7c"
@@ -8826,6 +9351,10 @@ universalify@^0.1.0:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/universalify/-/universalify-0.1.2.tgz#b646f69be3942dabcecc9d6639c80dc105efaa66"
 
+unquote@~1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/unquote/-/unquote-1.1.1.tgz#8fded7324ec6e88a0ff8b905e7c098cdc086d544"
+
 unset-value@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/unset-value/-/unset-value-1.0.0.tgz#8376873f7d2335179ffb1e6fc3a8ed0dfc8ab559"
@@ -8907,7 +9436,7 @@ util-deprecate@~1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"
 
-util.promisify@1.0.0, util.promisify@^1.0.0:
+util.promisify@1.0.0, util.promisify@^1.0.0, util.promisify@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/util.promisify/-/util.promisify-1.0.0.tgz#440f7165a459c9a16dc145eb8e72f35687097030"
   dependencies: