WIP: Find unused CSSfeature/find-unused-css

7 files changed, 407 insertions, 13 deletions

diff --git a/.gitignore b/.gitignore
index 3baf640a9c3..7c0efda4861 100644
--- a/.gitignore
+++ b/.gitignore
@@ -54,6 +54,7 @@ eslint-report.html
 /shared/artifacts/
 /spec/javascripts/fixtures/blob/pdf/
 /spec/javascripts/fixtures/blob/balsamiq/
+/fixtures/pages/*
 /rails_best_practices_output.html
 /tags
 /tmp/*
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 766fb3a2ef7..1e5d50b8bdf 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -104,6 +104,7 @@ stages:
       - knapsack/
       - rspec_flaky/
       - tmp/capybara/
+      - fixtures/pages/
 
 .rspec-metadata-pg: &rspec-metadata-pg
   <<: *rspec-metadata
diff --git a/fixtures/find-unused-css.js b/fixtures/find-unused-css.js
new file mode 100644
index 00000000000..6804f503b6b
--- /dev/null
+++ b/fixtures/find-unused-css.js
@@ -0,0 +1,65 @@
+const Promise = require('bluebird');
+const path = require('path');
+const fs = require('fs-extra');
+const uncss = require('uncss');
+
+const outputFile = Promise.promisify(fs.outputFile);
+
+// Find `<script(.*?)<\/script>` and replace with nothing
+// In `fixtures/pages`
+
+
+
+function removeDisassociatedComments(str) {
+  return str.replace(/\/\*(.*?)\*\/\n($|\/\*(.*?)\*\/)\n/gm, '');
+}
+
+
+const pagesDirectory = '/Users/eric/Documents/gitlab/gitlab-development-kit/gitlab/fixtures/pages/';
+
+const files = [
+  //path.join(pagesDirectory, 'Admin Broadcast Messages Live preview a customized broadcast message.html'),
+  //path.join(pagesDirectory, 'Commits CI commit status is Ci Build when logged as reporter Renders header.html'),
+  //path.join(pagesDirectory, 'Visual tokens editing assignee token makes value editable.html'),
+  /* */
+  ...fs.readdirSync(pagesDirectory).map((file) => {
+    return path.join(pagesDirectory, file);
+  })
+  /* */
+];
+
+console.log(`Looking over ${files.length} files`);
+
+
+const options = {
+  report: true,
+  stylesheets: [
+    //'application-2abaf6ae8d375c7b1fad9dfa885d5da1b6ee69d983bd1d36a6699c880b7ca506.css',
+    path.join(pagesDirectory, 'application-2abaf6ae8d375c7b1fad9dfa885d5da1b6ee69d983bd1d36a6699c880b7ca506.css')
+  ],
+  cacheDirectory: 'fixtures/pages/cache',
+  concurrency: 10
+};
+
+uncss(files, options, (err, usedCss, report) => {
+  if (err) {
+    console.log('err', err, err.stack);
+    return;
+  }
+
+  // TODO: Would be best to run this through a PostCSS plugin again and
+  // remove any comment not above a rule or any at-rule with only comments inside
+  //const resultantUsedCss = removeDisassociatedComments(usedCss);
+
+  Promise.all([
+    outputFile('output/raw-report3.json', JSON.stringify(report.selectors, null, 2)),
+    //outputFile('output/raw-report3.json', report),
+    //outputFile('output/used.css', resultantUsedCss)
+  ])
+    .then(() => {
+      console.log('report saved to disk!');
+    })
+    .catch((err) => {
+      console.log('Problem saving report', err, err.stack);
+    });
+});
diff --git a/package.json b/package.json
index feae6ca9748..222ee3a47b8 100644
--- a/package.json
+++ b/package.json
@@ -19,6 +19,7 @@
     "babel-plugin-transform-define": "^1.2.0",
     "babel-preset-latest": "^6.24.0",
     "babel-preset-stage-2": "^6.22.0",
+    "bluebird": "^3.5.0",
     "bootstrap-sass": "^3.3.6",
     "brace-expansion": "^1.1.8",
     "compression-webpack-plugin": "^1.0.0",
@@ -34,6 +35,7 @@
     "eslint-plugin-html": "^2.0.1",
     "exports-loader": "^0.6.4",
     "file-loader": "^0.11.1",
+    "fs-extra": "^4.0.2",
     "imports-loader": "^0.7.1",
     "jed": "^1.1.1",
     "jquery": "^2.2.1",
@@ -57,6 +59,7 @@
     "three-orbit-controls": "^82.1.0",
     "three-stl-loader": "^1.0.4",
     "timeago.js": "^2.0.5",
+    "uncss": "MadLittleMods/uncss#feature/performant-with-many-html-files",
     "underscore": "^1.8.3",
     "url-loader": "^0.5.8",
     "visibilityjs": "^1.2.4",
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 92735336572..f9b92c3888d 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -75,6 +75,7 @@ RSpec.configure do |config|
     config.default_retry_count = 4
     config.reporter.register_listener(RspecFlaky::Listener.new, :example_passed, :dump_summary)
   end
+  config.default_retry_count = 2
 
   config.before(:suite) do
     Timecop.safe_mode = true
diff --git a/spec/support/capybara.rb b/spec/support/capybara.rb
index c45c4a4310d..11ac58e99c4 100644
--- a/spec/support/capybara.rb
+++ b/spec/support/capybara.rb
@@ -52,4 +52,21 @@ RSpec.configure do |config|
     Capybara.reset_sessions! unless example.exception
     block_and_wait_for_requests_complete
   end
+
+  config.after(:example) do |example|
+    puts "#{page.html.length} #{example.metadata[:full_description]}"
+    if page.html.length > 0
+      out = File.join(Rails.root, 'fixtures', 'pages', "#{example.metadata[:full_description]}.html")
+      begin
+        # Only create the file if it doesn't already exist
+        File.open(out, File::WRONLY | File::CREAT | File::EXCL) do |handle|
+          handle.write(page.html)
+        end
+      rescue
+        # noop
+      end
+    else
+      puts "Page did not contain any HTML (probably failed), #{example.metadata[:full_description]}"
+    end
+  end
 end
diff --git a/yarn.lock b/yarn.lock
index 02917125f05..7a7f2e856f1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2,6 +2,10 @@
 # yarn lockfile v1
 
 
+abab@^1.0.3:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/abab/-/abab-1.0.3.tgz#b81de5f7274ec4e756d797cd834f303642724e5d"
+
 abbrev@1, abbrev@1.0.x:
   version "1.0.9"
   resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-1.0.9.tgz#91b4792588a7738c25f35dd6f63752a2f8776135"
@@ -19,6 +23,12 @@ acorn-dynamic-import@^2.0.0:
   dependencies:
     acorn "^4.0.3"
 
+acorn-globals@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/acorn-globals/-/acorn-globals-3.1.0.tgz#fd8270f71fbb4996b004fa880ee5d46573a731bf"
+  dependencies:
+    acorn "^4.0.4"
+
 acorn-jsx@^3.0.0:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/acorn-jsx/-/acorn-jsx-3.0.1.tgz#afdf9488fb1ecefc8348f6fb22f464e32a58b36b"
@@ -29,7 +39,7 @@ acorn@^3.0.4:
   version "3.3.0"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-3.3.0.tgz#45e37fb39e8da3f25baee3ff5369e2bb5f22017a"
 
-acorn@^4.0.3:
+acorn@^4.0.3, acorn@^4.0.4:
   version "4.0.13"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-4.0.13.tgz#105495ae5361d697bd195c825192e1ad7f253787"
 
@@ -56,7 +66,7 @@ ajv@^4.7.0, ajv@^4.9.1:
     co "^4.6.0"
     json-stable-stringify "^1.0.1"
 
-ajv@^5.1.5:
+ajv@^5.1.0, ajv@^5.1.5:
   version "5.2.2"
   resolved "https://registry.yarnpkg.com/ajv/-/ajv-5.2.2.tgz#47c68d69e86f5d953103b0074a9430dc63da5e39"
   dependencies:
@@ -101,6 +111,12 @@ ansi-styles@^2.2.1:
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-2.2.1.tgz#b432dd3358b634cf75e1e4664368240533c1ddbe"
 
+ansi-styles@^3.1.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.2.0.tgz#c159b8d5be0f9e5a6f346dab94f16ce022161b88"
+  dependencies:
+    color-convert "^1.9.0"
+
 anymatch@^1.3.0:
   version "1.3.2"
   resolved "https://registry.yarnpkg.com/anymatch/-/anymatch-1.3.2.tgz#553dcb8f91e3c889845dfdba34c77721b90b9d7a"
@@ -141,6 +157,10 @@ arr-flatten@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/arr-flatten/-/arr-flatten-1.0.1.tgz#e5ffe54d45e19f32f216e91eb99c8ce892bb604b"
 
+array-equal@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/array-equal/-/array-equal-1.0.0.tgz#8c2a5ef2472fd9ea742b04c77a75093ba2757c93"
+
 array-find-index@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/array-find-index/-/array-find-index-1.0.2.tgz#df010aa1287e164bbda6f9723b0a96a1ec4187a1"
@@ -252,7 +272,11 @@ aws-sign2@~0.6.0:
   version "0.6.0"
   resolved "https://registry.yarnpkg.com/aws-sign2/-/aws-sign2-0.6.0.tgz#14342dd38dbcc94d0e5b87d763cd63612c0e794f"
 
-aws4@^1.2.1:
+aws-sign2@~0.7.0:
+  version "0.7.0"
+  resolved "https://registry.yarnpkg.com/aws-sign2/-/aws-sign2-0.7.0.tgz#b46e890934a9591f2d2f6f86d7e6a9f1b3fe76a8"
+
+aws4@^1.2.1, aws4@^1.6.0:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/aws4/-/aws4-1.6.0.tgz#83ef5ca860b2b32e4a0deedee8c771b9db57471e"
 
@@ -932,7 +956,7 @@ bluebird@^3.0.5, bluebird@^3.1.1:
   version "3.4.7"
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.4.7.tgz#f72d760be09b7f76d08ed8fae98b289a8d05fab3"
 
-bluebird@^3.3.0:
+bluebird@^3.3.0, bluebird@^3.4.0, bluebird@^3.5.0:
   version "3.5.0"
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.0.tgz#791420d7f551eea2897453a8a77653f96606d67c"
 
@@ -972,6 +996,18 @@ boom@2.x.x:
   dependencies:
     hoek "2.x.x"
 
+boom@4.x.x:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/boom/-/boom-4.3.1.tgz#4f8a3005cb4a7e3889f749030fd25b96e01d2e31"
+  dependencies:
+    hoek "4.x.x"
+
+boom@5.x.x:
+  version "5.2.0"
+  resolved "https://registry.yarnpkg.com/boom/-/boom-5.2.0.tgz#5dd9da6ee3a5f302077436290cb717d3f4a54e02"
+  dependencies:
+    hoek "4.x.x"
+
 bootstrap-sass@^3.3.6:
   version "3.3.6"
   resolved "https://registry.yarnpkg.com/bootstrap-sass/-/bootstrap-sass-3.3.6.tgz#363b0d300e868d3e70134c1a742bb17288444fd1"
@@ -1166,6 +1202,14 @@ chalk@1.1.3, chalk@^1.0.0, chalk@^1.1.0, chalk@^1.1.1, chalk@^1.1.3:
     strip-ansi "^3.0.0"
     supports-color "^2.0.0"
 
+chalk@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.1.0.tgz#ac5becf14fa21b99c6c92ca7a7d7cfd5b17e743e"
+  dependencies:
+    ansi-styles "^3.1.0"
+    escape-string-regexp "^1.0.5"
+    supports-color "^4.0.0"
+
 chokidar@^1.4.1, chokidar@^1.4.3, chokidar@^1.6.0, chokidar@^1.7.0:
   version "1.7.0"
   resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-1.7.0.tgz#798e689778151c8076b4b360e5edd28cda2bb468"
@@ -1249,7 +1293,7 @@ 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"
 
-color-convert@^1.3.0:
+color-convert@^1.3.0, color-convert@^1.9.0:
   version "1.9.0"
   resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-1.9.0.tgz#1accf97dd739b983bf994d56fec8f95853641b7a"
   dependencies:
@@ -1421,6 +1465,10 @@ content-disposition@0.5.2:
   version "0.5.2"
   resolved "https://registry.yarnpkg.com/content-disposition/-/content-disposition-0.5.2.tgz#0cf68bb9ddf5f2be7961c3a85178cb85dba78cb4"
 
+content-type-parser@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/content-type-parser/-/content-type-parser-1.0.1.tgz#c3e56988c53c65127fb46d4032a3a900246fdc94"
+
 content-type@~1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/content-type/-/content-type-1.0.2.tgz#b7d113aee7a8dd27bd21133c4dc2529df1721eed"
@@ -1520,6 +1568,12 @@ cryptiles@2.x.x:
   dependencies:
     boom "2.x.x"
 
+cryptiles@3.x.x:
+  version "3.1.2"
+  resolved "https://registry.yarnpkg.com/cryptiles/-/cryptiles-3.1.2.tgz#a89fbb220f5ce25ec56e8c4aa8a4fd7b5b0d29fe"
+  dependencies:
+    boom "5.x.x"
+
 crypto-browserify@^3.11.0:
   version "3.11.0"
   resolved "https://registry.yarnpkg.com/crypto-browserify/-/crypto-browserify-3.11.0.tgz#3652a0906ab9b2a7e0c3ce66a408e957a2485522"
@@ -1620,6 +1674,16 @@ csso@~2.3.1:
     clap "^1.0.9"
     source-map "^0.5.3"
 
+cssom@0.3.x, "cssom@>= 0.3.2 < 0.4.0":
+  version "0.3.2"
+  resolved "https://registry.yarnpkg.com/cssom/-/cssom-0.3.2.tgz#b8036170c79f07a90ff2f16e22284027a243848b"
+
+"cssstyle@>= 0.2.37 < 0.3.0":
+  version "0.2.37"
+  resolved "https://registry.yarnpkg.com/cssstyle/-/cssstyle-0.2.37.tgz#541097234cb2513c83ceed3acddc27ff27987d54"
+  dependencies:
+    cssom "0.3.x"
+
 currently-unhandled@^0.4.1:
   version "0.4.1"
   resolved "https://registry.yarnpkg.com/currently-unhandled/-/currently-unhandled-0.4.1.tgz#988df33feab191ef799a61369dd76c17adf957ea"
@@ -2127,6 +2191,17 @@ escodegen@1.8.x:
   optionalDependencies:
     source-map "~0.2.0"
 
+escodegen@^1.6.1:
+  version "1.9.0"
+  resolved "https://registry.yarnpkg.com/escodegen/-/escodegen-1.9.0.tgz#9811a2f265dc1cd3894420ee3717064b632b8852"
+  dependencies:
+    esprima "^3.1.3"
+    estraverse "^4.2.0"
+    esutils "^2.0.2"
+    optionator "^0.8.1"
+  optionalDependencies:
+    source-map "~0.5.6"
+
 escope@^3.6.0:
   version "3.6.0"
   resolved "https://registry.yarnpkg.com/escope/-/escope-3.6.0.tgz#e01975e812781a163a6dadfdd80398dc64c889c3"
@@ -2259,7 +2334,7 @@ esprima@2.7.x, esprima@^2.6.0, esprima@^2.7.1:
   version "2.7.3"
   resolved "https://registry.yarnpkg.com/esprima/-/esprima-2.7.3.tgz#96e3b70d5779f6ad49cd032673d1c312767ba581"
 
-esprima@^3.1.1:
+esprima@^3.1.1, esprima@^3.1.3:
   version "3.1.3"
   resolved "https://registry.yarnpkg.com/esprima/-/esprima-3.1.3.tgz#fdca51cee6133895e3c88d535ce49dbff62a4633"
 
@@ -2426,7 +2501,7 @@ express@^4.13.3, express@^4.15.2:
     utils-merge "1.0.0"
     vary "~1.1.1"
 
-extend@^3.0.0, extend@~3.0.0:
+extend@^3.0.0, extend@~3.0.0, extend@~3.0.1:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/extend/-/extend-3.0.1.tgz#a755ea7bc1adfcc5a31ce7e762dbaadc5e636444"
 
@@ -2607,6 +2682,14 @@ form-data@~2.1.1:
     combined-stream "^1.0.5"
     mime-types "^2.1.12"
 
+form-data@~2.3.1:
+  version "2.3.1"
+  resolved "https://registry.yarnpkg.com/form-data/-/form-data-2.3.1.tgz#6fb94fbd71885306d73d15cc497fe4cc4ecd44bf"
+  dependencies:
+    asynckit "^0.4.0"
+    combined-stream "^1.0.5"
+    mime-types "^2.1.12"
+
 forwarded@~0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/forwarded/-/forwarded-0.1.0.tgz#19ef9874c4ae1c297bcf078fde63a09b66a84363"
@@ -2635,6 +2718,14 @@ fs-extra@^0.26.4:
     path-is-absolute "^1.0.0"
     rimraf "^2.2.8"
 
+fs-extra@^4.0.2:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-4.0.2.tgz#f91704c53d1b461f893452b0c307d9997647ab6b"
+  dependencies:
+    graceful-fs "^4.1.2"
+    jsonfile "^4.0.0"
+    universalify "^0.1.0"
+
 fs.realpath@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
@@ -2864,6 +2955,10 @@ har-schema@^1.0.5:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/har-schema/-/har-schema-1.0.5.tgz#d263135f43307c02c602afc8fe95970c0151369e"
 
+har-schema@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/har-schema/-/har-schema-2.0.0.tgz#a94c2224ebcac04782a0d9035521f24735b7ec92"
+
 har-validator@~4.2.1:
   version "4.2.1"
   resolved "https://registry.yarnpkg.com/har-validator/-/har-validator-4.2.1.tgz#33481d0f1bbff600dd203d75812a6a5fba002e2a"
@@ -2871,6 +2966,13 @@ har-validator@~4.2.1:
     ajv "^4.9.1"
     har-schema "^1.0.5"
 
+har-validator@~5.0.3:
+  version "5.0.3"
+  resolved "https://registry.yarnpkg.com/har-validator/-/har-validator-5.0.3.tgz#ba402c266194f15956ef15e0fcf242993f6a7dfd"
+  dependencies:
+    ajv "^5.1.0"
+    har-schema "^2.0.0"
+
 has-ansi@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/has-ansi/-/has-ansi-2.0.0.tgz#34f5049ce1ecdf2b0649af3ef24e45ed35416d91"
@@ -2934,6 +3036,15 @@ hawk@~3.1.3:
     hoek "2.x.x"
     sntp "1.x.x"
 
+hawk@~6.0.2:
+  version "6.0.2"
+  resolved "https://registry.yarnpkg.com/hawk/-/hawk-6.0.2.tgz#af4d914eb065f9b5ce4d9d11c1cb2126eecc3038"
+  dependencies:
+    boom "4.x.x"
+    cryptiles "3.x.x"
+    hoek "4.x.x"
+    sntp "2.x.x"
+
 he@^1.1.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/he/-/he-1.1.1.tgz#93410fd21b009735151f8868c2f271f3427e23fd"
@@ -2942,6 +3053,10 @@ hoek@2.x.x:
   version "2.16.3"
   resolved "https://registry.yarnpkg.com/hoek/-/hoek-2.16.3.tgz#20bb7403d3cea398e91dc4710a8ff1b8274a25ed"
 
+hoek@4.x.x:
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/hoek/-/hoek-4.2.0.tgz#72d9d0754f7fe25ca2d01ad8f8f9a9449a89526d"
+
 home-or-tmp@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/home-or-tmp/-/home-or-tmp-2.0.0.tgz#e36c3f2d2cae7d746a857e38d18d5f32a7882db8"
@@ -2966,6 +3081,12 @@ 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"
 
+html-encoding-sniffer@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/html-encoding-sniffer/-/html-encoding-sniffer-1.0.1.tgz#79bf7a785ea495fe66165e734153f363ff5437da"
+  dependencies:
+    whatwg-encoding "^1.0.1"
+
 html-entities@1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/html-entities/-/html-entities-1.2.0.tgz#41948caf85ce82fed36e4e6a0ed371a6664379e2"
@@ -2974,6 +3095,10 @@ html-entities@^1.2.0:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/html-entities/-/html-entities-1.2.1.tgz#0df29351f0721163515dfb9e5543e5f6eed5162f"
 
+html-tags@^1.0.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/html-tags/-/html-tags-1.2.0.tgz#c78de65b5663aa597989dd2b7ab49200d7e4db98"
+
 htmlparser2@^3.8.2:
   version "3.9.2"
   resolved "https://registry.yarnpkg.com/htmlparser2/-/htmlparser2-3.9.2.tgz#1bdf87acca0f3f9e53fa4fcceb0f4b4cbb00b338"
@@ -3031,10 +3156,22 @@ http-signature@~1.1.0:
     jsprim "^1.2.2"
     sshpk "^1.7.0"
 
+http-signature@~1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/http-signature/-/http-signature-1.2.0.tgz#9aecd925114772f3d95b65a60abb8f7c18fbace1"
+  dependencies:
+    assert-plus "^1.0.0"
+    jsprim "^1.2.2"
+    sshpk "^1.7.0"
+
 https-browserify@0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/https-browserify/-/https-browserify-0.0.1.tgz#3f91365cabe60b77ed0ebba24b454e3e09d95a82"
 
+iconv-lite@0.4.13:
+  version "0.4.13"
+  resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.13.tgz#1f88aba4ab0b1508e8312acc39345f36e992e2f2"
+
 iconv-lite@0.4.15:
   version "0.4.15"
   resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.15.tgz#fe265a218ac6a57cfe854927e9d04c19825eddeb"
@@ -3246,6 +3383,12 @@ is-glob@^3.1.0:
   dependencies:
     is-extglob "^2.1.0"
 
+is-html@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/is-html/-/is-html-1.1.0.tgz#e04f1c18d39485111396f9a0273eab51af218464"
+  dependencies:
+    html-tags "^1.0.0"
+
 is-my-json-valid@^2.10.0:
   version "2.16.0"
   resolved "https://registry.yarnpkg.com/is-my-json-valid/-/is-my-json-valid-2.16.0.tgz#f079dd9bfdae65ee2038aae8acbc86ab109e3693"
@@ -3555,6 +3698,30 @@ jsbn@~0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513"
 
+jsdom@^9.11.0:
+  version "9.12.0"
+  resolved "https://registry.yarnpkg.com/jsdom/-/jsdom-9.12.0.tgz#e8c546fffcb06c00d4833ca84410fed7f8a097d4"
+  dependencies:
+    abab "^1.0.3"
+    acorn "^4.0.4"
+    acorn-globals "^3.1.0"
+    array-equal "^1.0.0"
+    content-type-parser "^1.0.1"
+    cssom ">= 0.3.2 < 0.4.0"
+    cssstyle ">= 0.2.37 < 0.3.0"
+    escodegen "^1.6.1"
+    html-encoding-sniffer "^1.0.1"
+    nwmatcher ">= 1.3.9 < 2.0.0"
+    parse5 "^1.5.1"
+    request "^2.79.0"
+    sax "^1.2.1"
+    symbol-tree "^3.2.1"
+    tough-cookie "^2.3.2"
+    webidl-conversions "^4.0.0"
+    whatwg-encoding "^1.0.1"
+    whatwg-url "^4.3.0"
+    xml-name-validator "^2.0.1"
+
 jsesc@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/jsesc/-/jsesc-1.3.0.tgz#46c3fec8c1892b12b0833db9bc7622176dbab34b"
@@ -3599,6 +3766,12 @@ jsonfile@^2.1.0:
   optionalDependencies:
     graceful-fs "^4.1.6"
 
+jsonfile@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/jsonfile/-/jsonfile-4.0.0.tgz#8771aae0799b64076b76640fca058f9c10e33ecb"
+  optionalDependencies:
+    graceful-fs "^4.1.6"
+
 jsonify@~0.0.0:
   version "0.0.0"
   resolved "https://registry.yarnpkg.com/jsonify/-/jsonify-0.0.0.tgz#2c74b6ee41d93ca51b7b5aaee8f503631d252a73"
@@ -3930,7 +4103,7 @@ lodash@^3.8.0:
   version "3.10.1"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-3.10.1.tgz#5bf45e8e49ba4189e17d482789dfd15bd140b7b6"
 
-lodash@^4.0.0, lodash@^4.14.0, lodash@^4.17.2, lodash@^4.17.4, lodash@^4.2.0, lodash@^4.3.0, lodash@^4.5.0:
+lodash@^4.0.0, lodash@^4.13.1, lodash@^4.14.0, lodash@^4.17.2, lodash@^4.17.4, lodash@^4.2.0, lodash@^4.3.0, lodash@^4.5.0:
   version "4.17.4"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
 
@@ -4086,6 +4259,10 @@ mime-db@~1.27.0:
   version "1.27.0"
   resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.27.0.tgz#820f572296bbd20ec25ed55e5b5de869e5436eb1"
 
+mime-db@~1.30.0:
+  version "1.30.0"
+  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.30.0.tgz#74c643da2dd9d6a45399963465b26d5ca7d71f01"
+
 mime-types@^2.1.12, mime-types@~2.1.7:
   version "2.1.16"
   resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.16.tgz#2b858a52e5ecd516db897ac2be87487830698e23"
@@ -4098,6 +4275,12 @@ mime-types@~2.1.11, mime-types@~2.1.15:
   dependencies:
     mime-db "~1.27.0"
 
+mime-types@~2.1.17:
+  version "2.1.17"
+  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.17.tgz#09d7a393f03e995a79f8af857b70a9e0ab16557a"
+  dependencies:
+    mime-db "~1.30.0"
+
 mime@1.3.4, mime@1.3.x, mime@^1.3.4:
   version "1.3.4"
   resolved "https://registry.yarnpkg.com/mime/-/mime-1.3.4.tgz#115f9e3b6b3daf2959983cb38f149a2d40eb5d53"
@@ -4380,7 +4563,11 @@ number-is-nan@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/number-is-nan/-/number-is-nan-1.0.1.tgz#097b602b53422a522c1afb8790318336941a011d"
 
-oauth-sign@~0.8.1:
+"nwmatcher@>= 1.3.9 < 2.0.0":
+  version "1.4.1"
+  resolved "https://registry.yarnpkg.com/nwmatcher/-/nwmatcher-1.4.1.tgz#7ae9b07b0ea804db7e25f05cb5fe4097d4e4949f"
+
+oauth-sign@~0.8.1, oauth-sign@~0.8.2:
   version "0.8.2"
   resolved "https://registry.yarnpkg.com/oauth-sign/-/oauth-sign-0.8.2.tgz#46a6ab7f0aead8deae9ec0565780b7d4efeb9d43"
 
@@ -4579,6 +4766,10 @@ parse-json@^2.2.0:
   dependencies:
     error-ex "^1.2.0"
 
+parse5@^1.5.1:
+  version "1.5.1"
+  resolved "https://registry.yarnpkg.com/parse5/-/parse5-1.5.1.tgz#9b7f3b0de32be78dc2401b17573ccaf0f6f59d94"
+
 parsejson@0.0.3:
   version "0.0.3"
   resolved "https://registry.yarnpkg.com/parsejson/-/parsejson-0.0.3.tgz#ab7e3759f209ece99437973f7d0f1f64ae0e64ab"
@@ -4665,6 +4856,10 @@ performance-now@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/performance-now/-/performance-now-0.2.0.tgz#33ef30c5c77d4ea21c5a53869d91b56d8f2555e5"
 
+performance-now@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/performance-now/-/performance-now-2.1.0.tgz#6309f4e0e5fa913ec1c69307ae364b4b377c9e7b"
+
 pify@^2.0.0, pify@^2.3.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/pify/-/pify-2.3.0.tgz#ed141a6ac043a849ea588498e7dca8b15330e90c"
@@ -4980,6 +5175,14 @@ postcss@^5.0.10, postcss@^5.0.11, postcss@^5.0.12, postcss@^5.0.13, postcss@^5.0
     source-map "^0.5.6"
     supports-color "^3.2.3"
 
+postcss@^6.0.1:
+  version "6.0.11"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-6.0.11.tgz#f48db210b1d37a7f7ab6499b7a54982997ab6f72"
+  dependencies:
+    chalk "^2.1.0"
+    source-map "^0.5.7"
+    supports-color "^4.4.0"
+
 prelude-ls@~1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
@@ -5073,6 +5276,10 @@ qs@6.5.0:
   version "6.5.0"
   resolved "https://registry.yarnpkg.com/qs/-/qs-6.5.0.tgz#8d04954d364def3efc55b5a0793e1e2c8b1e6e49"
 
+qs@~6.5.1:
+  version "6.5.1"
+  resolved "https://registry.yarnpkg.com/qs/-/qs-6.5.1.tgz#349cdf6eef89ec45c12d7d5eb3fc0c870343a6d8"
+
 query-string@^4.1.0:
   version "4.3.2"
   resolved "https://registry.yarnpkg.com/query-string/-/query-string-4.3.2.tgz#ec0fd765f58a50031a3968c2431386f8947a5cdd"
@@ -5373,6 +5580,33 @@ repeating@^2.0.0:
   dependencies:
     is-finite "^1.0.0"
 
+request@^2.72.0, request@^2.79.0:
+  version "2.82.0"
+  resolved "https://registry.yarnpkg.com/request/-/request-2.82.0.tgz#2ba8a92cd7ac45660ea2b10a53ae67cd247516ea"
+  dependencies:
+    aws-sign2 "~0.7.0"
+    aws4 "^1.6.0"
+    caseless "~0.12.0"
+    combined-stream "~1.0.5"
+    extend "~3.0.1"
+    forever-agent "~0.6.1"
+    form-data "~2.3.1"
+    har-validator "~5.0.3"
+    hawk "~6.0.2"
+    http-signature "~1.2.0"
+    is-typedarray "~1.0.0"
+    isstream "~0.1.2"
+    json-stringify-safe "~5.0.1"
+    mime-types "~2.1.17"
+    oauth-sign "~0.8.2"
+    performance-now "^2.1.0"
+    qs "~6.5.1"
+    safe-buffer "^5.1.1"
+    stringstream "~0.0.5"
+    tough-cookie "~2.3.2"
+    tunnel-agent "^0.6.0"
+    uuid "^3.1.0"
+
 request@^2.81.0:
   version "2.81.0"
   resolved "https://registry.yarnpkg.com/request/-/request-2.81.0.tgz#c6928946a0e06c5f8d6f8a9333469ffda46298a0"
@@ -5480,7 +5714,7 @@ rx-lite@^3.1.2:
   version "3.1.2"
   resolved "https://registry.yarnpkg.com/rx-lite/-/rx-lite-3.1.2.tgz#19ce502ca572665f3b647b10939f97fd1615f102"
 
-safe-buffer@5.1.1, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
+safe-buffer@5.1.1, safe-buffer@^5.1.1, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.1.tgz#893312af69b2123def71f57889001671eeb2c853"
 
@@ -5488,6 +5722,10 @@ safe-buffer@^5.0.1, safe-buffer@~5.0.1:
   version "5.0.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.0.1.tgz#d263ca54696cd8a306b5ca6551e92de57918fbe7"
 
+sax@^1.2.1:
+  version "1.2.4"
+  resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.4.tgz#2816234e2378bddc4e5354fab5caa895df7100d9"
+
 sax@~1.2.1:
   version "1.2.2"
   resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.2.tgz#fd8631a23bc7826bef5d871bdb87378c95647828"
@@ -5633,6 +5871,12 @@ sntp@1.x.x:
   dependencies:
     hoek "2.x.x"
 
+sntp@2.x.x:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/sntp/-/sntp-2.0.2.tgz#5064110f0af85f7cfdb7d6b67a40028ce52b4b2b"
+  dependencies:
+    hoek "4.x.x"
+
 socket.io-adapter@0.5.0:
   version "0.5.0"
   resolved "https://registry.yarnpkg.com/socket.io-adapter/-/socket.io-adapter-0.5.0.tgz#cb6d4bb8bec81e1078b99677f9ced0046066bb8b"
@@ -5742,6 +5986,10 @@ source-map@^0.4.4:
   dependencies:
     amdefine ">=0.0.4"
 
+source-map@^0.5.7, source-map@~0.5.6:
+  version "0.5.7"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.7.tgz#8a039d2d1021d22d1ea14c80d8ea468ba2ef3fcc"
+
 source-map@~0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.2.0.tgz#dab73fbcfc2ba819b4de03bd6f6eaa48164b3f9d"
@@ -5887,7 +6135,7 @@ string_decoder@~1.0.3:
   dependencies:
     safe-buffer "~5.1.0"
 
-stringstream@~0.0.4:
+stringstream@~0.0.4, stringstream@~0.0.5:
   version "0.0.5"
   resolved "https://registry.yarnpkg.com/stringstream/-/stringstream-0.0.5.tgz#4e484cd4de5a0bbbee18e46307710a8a81621878"
 
@@ -5931,6 +6179,12 @@ supports-color@^3.1.0, supports-color@^3.1.1, supports-color@^3.1.2, supports-co
   dependencies:
     has-flag "^1.0.0"
 
+supports-color@^4.0.0, supports-color@^4.4.0:
+  version "4.4.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-4.4.0.tgz#883f7ddabc165142b2a61427f3352ded195d1a3e"
+  dependencies:
+    has-flag "^2.0.0"
+
 supports-color@^4.2.1:
   version "4.2.1"
   resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-4.2.1.tgz#65a4bb2631e90e02420dba5554c375a4754bb836"
@@ -5949,6 +6203,10 @@ svgo@^0.7.0:
     sax "~1.2.1"
     whet.extend "~0.9.9"
 
+symbol-tree@^3.2.1:
+  version "3.2.2"
+  resolved "https://registry.yarnpkg.com/symbol-tree/-/symbol-tree-3.2.2.tgz#ae27db38f660a7ae2e1c3b7d1bc290819b8519e6"
+
 table@^3.7.8:
   version "3.8.3"
   resolved "https://registry.yarnpkg.com/table/-/table-3.8.3.tgz#2bbc542f0fda9861a755d3947fefd8b3f513855f"
@@ -6103,12 +6361,16 @@ touch@1.0.0:
   dependencies:
     nopt "~1.0.10"
 
-tough-cookie@~2.3.0:
+tough-cookie@^2.3.2, tough-cookie@~2.3.0, tough-cookie@~2.3.2:
   version "2.3.2"
   resolved "https://registry.yarnpkg.com/tough-cookie/-/tough-cookie-2.3.2.tgz#f081f76e4c85720e6c37a5faced737150d84072a"
   dependencies:
     punycode "^1.4.1"
 
+tr46@~0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/tr46/-/tr46-0.0.3.tgz#8184fd347dac9cdc185992f3a6622e14b9d9ab6a"
+
 traverse@0.6.6:
   version "0.6.6"
   resolved "https://registry.yarnpkg.com/traverse/-/traverse-0.6.6.tgz#cbdf560fd7b9af632502fed40f918c157ea97137"
@@ -6193,6 +6455,21 @@ unc-path-regex@^0.1.0:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/unc-path-regex/-/unc-path-regex-0.1.2.tgz#e73dd3d7b0d7c5ed86fbac6b0ae7d8c6a69d50fa"
 
+uncss@MadLittleMods/uncss#feature/performant-with-many-html-files:
+  version "0.15.0"
+  resolved "https://codeload.github.com/MadLittleMods/uncss/tar.gz/d4acab9d8421efabebf36da79094a4f531441719"
+  dependencies:
+    bluebird "^3.4.0"
+    commander "^2.9.0"
+    fs-extra "^4.0.2"
+    glob "^7.0.3"
+    is-absolute-url "^2.0.0"
+    is-html "^1.0.0"
+    jsdom "^9.11.0"
+    lodash "^4.13.1"
+    postcss "^6.0.1"
+    request "^2.72.0"
+
 undefsafe@0.0.3:
   version "0.0.3"
   resolved "https://registry.yarnpkg.com/undefsafe/-/undefsafe-0.0.3.tgz#ecca3a03e56b9af17385baac812ac83b994a962f"
@@ -6215,6 +6492,10 @@ uniqs@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/uniqs/-/uniqs-2.0.0.tgz#ffede4b36b25290696e6e165d4a59edb998e6b02"
 
+universalify@^0.1.0:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/universalify/-/universalify-0.1.1.tgz#fa71badd4437af4c148841e3b3b165f9e9e590b7"
+
 unpipe@1.0.0, unpipe@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/unpipe/-/unpipe-1.0.0.tgz#b2bf4ee8514aae6165b4817829d21b2ef49904ec"
@@ -6307,7 +6588,7 @@ uuid@^2.0.1, uuid@^2.0.2:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-2.0.3.tgz#67e2e863797215530dff318e5bf9dcebfd47b21a"
 
-uuid@^3.0.0:
+uuid@^3.0.0, uuid@^3.1.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.1.0.tgz#3dd3d3e790abc24d7b0d3a034ffababe28ebbc04"
 
@@ -6415,6 +6696,14 @@ wbuf@^1.1.0, wbuf@^1.7.2:
   dependencies:
     minimalistic-assert "^1.0.0"
 
+webidl-conversions@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-3.0.1.tgz#24534275e2a7bc6be7bc86611cc16ae0a5654871"
+
+webidl-conversions@^4.0.0:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-4.0.2.tgz#a855980b1f0b6b359ba1d5d9fb39ae941faa63ad"
+
 webpack-bundle-analyzer@^2.8.2:
   version "2.8.2"
   resolved "https://registry.yarnpkg.com/webpack-bundle-analyzer/-/webpack-bundle-analyzer-2.8.2.tgz#8b6240c29a9d63bc72f09d920fb050adbcce9fe8"
@@ -6526,6 +6815,19 @@ websocket-extensions@>=0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/websocket-extensions/-/websocket-extensions-0.1.1.tgz#76899499c184b6ef754377c2dbb0cd6cb55d29e7"
 
+whatwg-encoding@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/whatwg-encoding/-/whatwg-encoding-1.0.1.tgz#3c6c451a198ee7aec55b1ec61d0920c67801a5f4"
+  dependencies:
+    iconv-lite "0.4.13"
+
+whatwg-url@^4.3.0:
+  version "4.8.0"
+  resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-4.8.0.tgz#d2981aa9148c1e00a41c5a6131166ab4683bbcc0"
+  dependencies:
+    tr46 "~0.0.3"
+    webidl-conversions "^3.0.0"
+
 whet.extend@~0.9.9:
   version "0.9.9"
   resolved "https://registry.yarnpkg.com/whet.extend/-/whet.extend-0.9.9.tgz#f877d5bf648c97e5aa542fadc16d6a259b9c11a1"
@@ -6621,6 +6923,10 @@ xdg-basedir@^2.0.0:
   dependencies:
     os-homedir "^1.0.0"
 
+xml-name-validator@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/xml-name-validator/-/xml-name-validator-2.0.1.tgz#4d8b8f1eccd3419aa362061becef515e1e559635"
+
 xmlhttprequest-ssl@1.5.3:
   version "1.5.3"
   resolved "https://registry.yarnpkg.com/xmlhttprequest-ssl/-/xmlhttprequest-ssl-1.5.3.tgz#185a888c04eca46c3e4070d99f7b49de3528992d"