A11y - Add Pa11y CI in main pipeline to collect a11y issues (#37741)

Co-authored-by: 
Hugo Häggmark <hugo.haggmark@gmail.com>
thisisobate <obasiuche62@gmail.com>

.drone.yml

@@ -435,6 +435,19 @@ steps:
   - build-storybook
   - end-to-end-tests
 
+- name: test-a11y-frontend
+  image: buildkite/puppeteer
+  commands:
+  - yarn -s test:accessibility --json > pa11y-ci-results.json
+  environment:
+    GRAFANA_MISC_STATS_API_KEY:
+      from_secret: grafana_misc_stats_api_key
+    HOST: end-to-end-tests-server
+    PORT: 3001
+  failure: ignore
+  depends_on:
+  - end-to-end-tests-server
+
 - name: publish-frontend-metrics
   image: grafana/build-container:1.4.1
   commands:
@@ -444,7 +457,7 @@ steps:
       from_secret: grafana_misc_stats_api_key
   failure: ignore
   depends_on:
-  - build-frontend
+  - test-a11y-frontend
 
 - name: build-frontend-docs
   image: grafana/build-container:1.4.1
@@ -3529,6 +3542,6 @@ get:
 
 ---
 kind: signature
-hmac: 80b19bbc75555ea1f675017ec9b98241b331a624a5f4ee7f3b169b75258d51be
+hmac: 4a159392af19a0f4dd9b507c2a1d5da0397ed2448d43cb93116110c7823a7aec
 
 ...

.pa11yci.conf.js

@@ -0,0 +1,83 @@
+var config = {
+  defaults: {
+    concurrency: 1,
+    runners: ['axe'],
+    chromeLaunchConfig: {
+      args: ['--no-sandbox'],
+    },
+  },
+
+  urls: [
+    {
+      url: '${HOST}/login',
+      actions: [
+        "set field input[name='user'] to admin",
+        "set field input[name='password'] to admin",
+        "click element button[aria-label='Login button']",
+        "wait for element [aria-label='Skip change password button'] to be visible",
+      ],
+    },
+    {
+      url: '${HOST}/?orgId=1',
+    },
+    {
+      url: '${HOST}/d/O6f11TZWk/panel-tests-bar-gauge',
+      hideElements: '.sidemenu',
+    },
+    {
+      url: '${HOST}/d/O6f11TZWk/panel-tests-bar-gauge?orgId=1&editview=settings',
+      rootElement: '.dashboard-settings',
+    },
+    {
+      url: '${HOST}/?orgId=1&search=open',
+      rootElement: '.main-view',
+    },
+    {
+      url: '${HOST}/alerting/list',
+      rootElement: '.main-view',
+    },
+    {
+      url: '${HOST}/datasources',
+      rootElement: '.main-view',
+    },
+    {
+      url: '${HOST}/org/users',
+      rootElement: '.main-view',
+    },
+    {
+      url: '${HOST}/org/teams',
+      rootElement: '.main-view',
+    },
+    {
+      url: '${HOST}/plugins',
+      rootElement: '.main-view',
+    },
+    {
+      url: '${HOST}/org',
+      rootElement: '.main-view',
+    },
+    {
+      url: '${HOST}/org/apikeys',
+      rootElement: '.main-view',
+    },
+    {
+      url: '${HOST}/dashboards',
+      rootElement: '.main-view',
+    },
+  ],
+};
+
+function myPa11yCiConfiguration(urls, defaults) {
+  const HOST_SERVER = process.env.HOST || 'localhost';
+  const PORT_SERVER = process.env.PORT || '3000';
+  for (var idx = 0; idx < urls.length; idx++) {
+    urls[idx] = { ...urls[idx], url: urls[idx].url.replace('${HOST}', `${HOST_SERVER}:${PORT_SERVER}`) };
+  }
+
+  return {
+    defaults: defaults,
+    urls: urls,
+  };
+}
+
+module.exports = myPa11yCiConfiguration(config.urls, config.defaults);

package.json

@@ -13,6 +13,7 @@
     "e2e:debug": "./e2e/start-and-run-suite debug",
     "e2e:dev": "./e2e/start-and-run-suite dev",
     "test": "jest --notify --watch",
+    "test:accessibility": "pa11y-ci --config .pa11yci.conf.js",
     "lint": "yarn run lint:ts && yarn run lint:sass",
     "lint:ts": "eslint . --ext .js,.tsx,.ts --cache",
     "lint:sass": "yarn run sass-lint -c public/sass/.sass-lint.yml 'public/sass/**/*.scss, packages/**/*.scss' -v -i '**/node_modules/**/*.scss'",
@@ -188,6 +189,7 @@
     "postcss-loader": "3.0.0",
     "postcss-reporter": "6.0.1",
     "prettier": "2.2.1",
+    "pa11y-ci": "2.4.2",
     "raw-loader": "4.0.2",
     "react-hot-loader": "4.8.0",
     "react-select-event": "^5.1.0",

scripts/ci-frontend-metrics.sh

@@ -2,6 +2,7 @@
 set -e
 
 ERROR_COUNT="$(./node_modules/.bin/tsc --project tsconfig.json --noEmit --strict true | grep -oP 'Found \K(\d+)')"
+ACCESSIBILITY_ERRORS="$(grep -oP '\"errors\":(\d+),' pa11y-ci-results.json | grep -oP '\d+')"
 DIRECTIVES="$(grep -r -o  directive public/app/ | wc -l)"
 CONTROLLERS="$(grep -r -oP 'class .*Ctrl' public/app/ | wc -l)"
 STORIES_COUNT="$(find ./packages/grafana-ui/src/components -name "*.story.tsx" | wc -l)"
@@ -19,6 +20,7 @@ MED_VULNERABILITIES="$(echo "${VULNERABILITY_AUDIT}" | sed -n '2p')"
 HIGH_VULNERABILITIES="$(echo "${VULNERABILITY_AUDIT}" | sed -n '3p')"
 
 echo -e "Typescript errors: $ERROR_COUNT"
+echo -e "Accessibility errors: $ACCESSIBILITY_ERRORS"
 echo -e "Directives: $DIRECTIVES"
 echo -e "Controllers: $CONTROLLERS"
 echo -e "Stories: $STORIES_COUNT"

scripts/lib.star

@@ -481,6 +481,24 @@ def test_frontend_step():
         ],
     }
 
+def test_a11y_frontend_step(edition, port=3001):
+    return {
+        'name': 'test-a11y-frontend' + enterprise2_sfx(edition),
+        'image': 'buildkite/puppeteer',
+        'depends_on': [
+          'end-to-end-tests-server' + enterprise2_sfx(edition),
+        ],
+         'environment': {
+            'GRAFANA_MISC_STATS_API_KEY': from_secret('grafana_misc_stats_api_key'),
+            'HOST': 'end-to-end-tests-server' + enterprise2_sfx(edition),
+            'PORT': port,
+        },
+        'failure': 'ignore',
+        'commands': [
+            'yarn -s test:accessibility --json > pa11y-ci-results.json',
+        ],
+    }
+
 def frontend_metrics_step(edition):
     if edition in ('enterprise', 'enterprise2'):
         return None
@@ -489,7 +507,7 @@ def frontend_metrics_step(edition):
         'name': 'publish-frontend-metrics',
         'image': build_image,
         'depends_on': [
-            'build-frontend',
+            'test-a11y-frontend' + enterprise2_sfx(edition),
         ],
         'environment': {
             'GRAFANA_MISC_STATS_API_KEY': from_secret('grafana_misc_stats_api_key'),
@@ -500,7 +518,6 @@ def frontend_metrics_step(edition):
         ],
     }
 
-
 def codespell_step():
     return {
         'name': 'codespell',

scripts/main.star

@@ -34,7 +34,8 @@ load(
     'notify_pipeline',
     'integration_test_services',
     'upload_cdn',
-    'validate_scuemata'
+    'validate_scuemata',
+    'test_a11y_frontend_step'
 )
 
 ver_mode = 'main'
@@ -72,6 +73,7 @@ def get_steps(edition, is_downstream=False):
         e2e_tests_step(edition=edition),
         build_storybook_step(edition=edition, ver_mode=ver_mode),
         publish_storybook_step(edition=edition, ver_mode=ver_mode),
+        test_a11y_frontend_step(edition=edition),
         frontend_metrics_step(edition=edition),
         build_frontend_docs_step(edition=edition),
         copy_packages_for_docker_step(),

yarn.lock

@@ -6656,7 +6656,7 @@ async-limiter@~1.0.0:
   resolved "https://registry.yarnpkg.com/async-limiter/-/async-limiter-1.0.1.tgz#dd379e94f0db8310b08291f9d64c3209766617fd"
   integrity sha512-csOlWGAcRFJaI6m+F2WKdnMKr4HhdhFVBk0H/QbJFMCr+uO2kwohwXQPxw/9OCxp05r5ghVBFSyioixx3gfkNQ==
 
-async@^2.6.2:
+async@^2.6.2, async@~2.6.3:
   version "2.6.3"
   resolved "https://registry.yarnpkg.com/async/-/async-2.6.3.tgz#d72625e2344a3656e3a3ad4fa749fa83299d82ff"
   integrity sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==
@@ -6729,6 +6729,11 @@ aws4@^1.8.0:
   resolved "https://registry.yarnpkg.com/aws4/-/aws4-1.8.0.tgz#f0e003d9ca9e7f59c7a508945d7b2ef9a04a542f"
   integrity sha512-ReZxvNHIOv88FlT7rxcXIIC0fPt4KZqZbOlivyWtXLt8ESx84zd3kMC6iK5jVeS2qt+g7ftS7ye4fi06X5rtRQ==
 
+axe-core@^3.5.1:
+  version "3.5.6"
+  resolved "https://registry.yarnpkg.com/axe-core/-/axe-core-3.5.6.tgz#e762a90d7f6dbd244ceacb4e72760ff8aad521b5"
+  integrity sha512-LEUDjgmdJoA3LqklSTwKYqkjcZ4HKc4ddIYGSAiSkr46NTjzg2L9RNB+lekO9P7Dlpa87+hBtzc2Fzn/+GUWMQ==
+
 axe-core@^4.2.0:
   version "4.3.2"
   resolved "https://registry.yarnpkg.com/axe-core/-/axe-core-4.3.2.tgz#fcf8777b82c62cfc69c7e9f32c0d2226287680e7"
@@ -7047,6 +7052,15 @@ better-opn@^2.1.1:
   dependencies:
     open "^7.0.3"
 
+bfj@^4.2.3:
+  version "4.2.4"
+  resolved "https://registry.yarnpkg.com/bfj/-/bfj-4.2.4.tgz#85f7b23683c2afdc15860384a2d1c3fac80ed33a"
+  integrity sha1-hfeyNoPCr9wVhgOEotHD+sgO0zo=
+  dependencies:
+    check-types "^7.3.0"
+    hoopy "^0.1.2"
+    tryer "^1.0.0"
+
 bfj@^6.1.1:
   version "6.1.2"
   resolved "https://registry.yarnpkg.com/bfj/-/bfj-6.1.2.tgz#325c861a822bcb358a41c78a33b8e6e2086dde7f"
@@ -7675,7 +7689,7 @@ chalk@2.4.2, chalk@^2.0.0, chalk@^2.0.1, chalk@^2.1.0, chalk@^2.3.0, chalk@^2.3.
     escape-string-regexp "^1.0.5"
     supports-color "^5.3.0"
 
-chalk@^1.0.0, chalk@^1.1.1, chalk@^1.1.3:
+chalk@^1.0.0, chalk@^1.1.1, chalk@^1.1.3, chalk@~1.1.3:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/chalk/-/chalk-1.1.3.tgz#a8115c55e4a702fe4d150abd3872822a7e09fc98"
   integrity sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=
@@ -7750,11 +7764,27 @@ check-more-types@^2.24.0:
   resolved "https://registry.yarnpkg.com/check-more-types/-/check-more-types-2.24.0.tgz#1420ffb10fd444dcfc79b43891bbfffd32a84600"
   integrity sha1-FCD/sQ/URNz8ebQ4kbv//TKoRgA=
 
+check-types@^7.3.0:
+  version "7.4.0"
+  resolved "https://registry.yarnpkg.com/check-types/-/check-types-7.4.0.tgz#0378ec1b9616ec71f774931a3c6516fad8c152f4"
+  integrity sha512-YbulWHdfP99UfZ73NcUDlNJhEIDgm9Doq9GhpyXbF+7Aegi3CVV7qqMCKTTqJxlvEvnQBp9IA+dxsGN6xK/nSg==
+
 check-types@^8.0.3:
   version "8.0.3"
   resolved "https://registry.yarnpkg.com/check-types/-/check-types-8.0.3.tgz#3356cca19c889544f2d7a95ed49ce508a0ecf552"
   integrity sha512-YpeKZngUmG65rLudJ4taU7VLkOCTMhNl/u4ctNC56LQS/zJTyNH0Lrtwm1tfTsbLlwvlfsA2d1c8vCf/Kh2KwQ==
 
+cheerio-select@^1.5.0:
+  version "1.5.0"
+  resolved "https://registry.yarnpkg.com/cheerio-select/-/cheerio-select-1.5.0.tgz#faf3daeb31b17c5e1a9dabcee288aaf8aafa5823"
+  integrity sha512-qocaHPv5ypefh6YNxvnbABM07KMxExbtbfuJoIie3iZXX1ERwYmJcIiRrr9H05ucQP1k28dav8rpdDgjQd8drg==
+  dependencies:
+    css-select "^4.1.3"
+    css-what "^5.0.1"
+    domelementtype "^2.2.0"
+    domhandler "^4.2.0"
+    domutils "^2.7.0"
+
 cheerio@^1.0.0-rc.3:
   version "1.0.0-rc.3"
   resolved "https://registry.yarnpkg.com/cheerio/-/cheerio-1.0.0-rc.3.tgz#094636d425b2e9c0f4eb91a46c05630c9a1a8bf6"
@@ -7767,6 +7797,19 @@ cheerio@^1.0.0-rc.3:
     lodash "^4.15.0"
     parse5 "^3.0.1"
 
+cheerio@~1.0.0-rc.3:
+  version "1.0.0-rc.10"
+  resolved "https://registry.yarnpkg.com/cheerio/-/cheerio-1.0.0-rc.10.tgz#2ba3dcdfcc26e7956fc1f440e61d51c643379f3e"
+  integrity sha512-g0J0q/O6mW8z5zxQ3A8E8J1hUgp4SMOvEoW/x84OwyHKe/Zccz83PVT4y5Crcr530FV6NgmKI1qvGTKVl9XXVw==
+  dependencies:
+    cheerio-select "^1.5.0"
+    dom-serializer "^1.3.2"
+    domhandler "^4.2.0"
+    htmlparser2 "^6.1.0"
+    parse5 "^6.0.1"
+    parse5-htmlparser2-tree-adapter "^6.0.1"
+    tslib "^2.2.0"
+
 chokidar@3.3.0:
   version "3.3.0"
   resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-3.3.0.tgz#12c0714668c55800f659e262d4962a97faf554a6"
@@ -8144,7 +8187,7 @@ command-exists@^1.2.8:
   resolved "https://registry.yarnpkg.com/command-exists/-/command-exists-1.2.8.tgz#715acefdd1223b9c9b37110a149c6392c2852291"
   integrity sha512-PM54PkseWbiiD/mMsbvW351/u+dafwTJ0ye2qB60G1aGQP9j3xK2gmMDc+R34L3nDtx4qMCitXT75mkbkGJDLw==
 
-commander@2, commander@^2.18.0, commander@^2.19.0, commander@^2.20.0, commander@^2.7.1, commander@^2.8.1, commander@^2.9.0:
+commander@2, commander@^2.18.0, commander@^2.19.0, commander@^2.20.0, commander@^2.7.1, commander@^2.8.1, commander@^2.9.0, commander@~2.20.3:
   version "2.20.3"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.20.3.tgz#fd485e84c03eb4881c20722ba48035e8531aeb33"
   integrity sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==
@@ -8184,6 +8227,11 @@ commander@~2.19.0:
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.19.0.tgz#f6198aa84e5b83c46054b94ddedbfed5ee9ff12a"
   integrity sha512-6tvAOO+D6OENvRAh524Dh9jcfKTYDQAqvqezbCW82xj5X0pSrcpxtvRKHLG0yBY6SD7PSDrJaj+0AiOcKVd1Xg==
 
+commander@~3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-3.0.2.tgz#6837c3fb677ad9933d1cfba42dd14d5117d6b39e"
+  integrity sha512-Gar0ASD4BDyKC4hl4DwHqDrmvjoxWKZigVnAbn5H1owvm4CxCPdb0HQDehwNYMJpla5+M2tPmPARzhtYuwpHow==
+
 comment-parser@1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/comment-parser/-/comment-parser-1.1.2.tgz#e5317d7a2ec22b470dcb54a29b25426c30bf39d8"
@@ -8857,7 +8905,7 @@ css-what@^3.2.1:
   resolved "https://registry.yarnpkg.com/css-what/-/css-what-3.4.2.tgz#ea7026fcb01777edbde52124e21f327e7ae950e4"
   integrity sha512-ACUm3L0/jiZTqfzRM3Hi9Q8eZqd6IK37mMWPLz9PJxkLWllYeRf+EHUSHYEtFop2Eqytaq1FizFVh7XfBnXCDQ==
 
-css-what@^5.0.0:
+css-what@^5.0.0, css-what@^5.0.1:
   version "5.0.1"
   resolved "https://registry.yarnpkg.com/css-what/-/css-what-5.0.1.tgz#3efa820131f4669a8ac2408f9c32e7c7de9f4cad"
   integrity sha512-FYDTSHb/7KXsWICVsxdmiExPjCfRC4qRFBdVwv7Ax9hMnvMmEjP9RfxTEZ3qPZGmADDn2vAKSo9UcN1jKVYscg==
@@ -9856,7 +9904,7 @@ dom-serializer@0:
     domelementtype "^2.0.1"
     entities "^2.0.0"
 
-dom-serializer@^1.0.1:
+dom-serializer@^1.0.1, dom-serializer@^1.3.2:
   version "1.3.2"
   resolved "https://registry.yarnpkg.com/dom-serializer/-/dom-serializer-1.3.2.tgz#6206437d32ceefaec7161803230c7a20bc1b4d91"
   integrity sha512-5c54Bk5Dw4qAxNOI1pFEizPSjVsx5+bpJKmL2kPn8JhBUq2q09tTCa3mjijun2NfK78NMouDYNMBkOrPZiS+ig==
@@ -9914,7 +9962,7 @@ domhandler@^2.3.0:
   dependencies:
     domelementtype "1"
 
-domhandler@^4.2.0:
+domhandler@^4.0.0, domhandler@^4.2.0:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/domhandler/-/domhandler-4.2.0.tgz#f9768a5f034be60a89a27c2e4d0f74eba0d8b059"
   integrity sha512-zk7sgt970kzPks2Bf+dwT/PLzghLnsivb9CcxkvR8Mzr66Olr0Ofd8neSbglHJHaHa2MadfoSdNlKYAaafmWfA==
@@ -9937,7 +9985,7 @@ domutils@^1.5.1, domutils@^1.7.0:
     dom-serializer "0"
     domelementtype "1"
 
-domutils@^2.6.0:
+domutils@^2.5.2, domutils@^2.6.0, domutils@^2.7.0:
   version "2.7.0"
   resolved "https://registry.yarnpkg.com/domutils/-/domutils-2.7.0.tgz#8ebaf0c41ebafcf55b0b72ec31c56323712c5442"
   integrity sha512-8eaHa17IwJUPAiB+SoTYBo5mCdeMgdcAoXJ59m6DT1vw+5iLS3gNoqYaRowaBKtGVrOF1Jz4yDTgYKLK2kvfJg==
@@ -11342,6 +11390,11 @@ file-system-cache@^1.0.5:
     fs-extra "^0.30.0"
     ramda "^0.21.0"
 
+file-url@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/file-url/-/file-url-3.0.0.tgz#247a586a746ce9f7a8ed05560290968afc262a77"
+  integrity sha512-g872QGsHexznxkIAdK8UiZRe7SkE6kvylShU4Nsj8NvfvZag7S0QuQ4IgvPDkk75HxgjIVDwycFTDAgIiO4nDA==
+
 filesize@6.1.0:
   version "6.1.0"
   resolved "https://registry.yarnpkg.com/filesize/-/filesize-6.1.0.tgz#e81bdaa780e2451d714d71c0d7a4f3238d37ad00"
@@ -12189,7 +12242,7 @@ globby@^11.0.1, globby@^11.0.2, globby@^11.0.3:
     merge2 "^1.3.0"
     slash "^3.0.0"
 
-globby@^6.1.0:
+globby@^6.1.0, globby@~6.1.0:
   version "6.1.0"
   resolved "https://registry.yarnpkg.com/globby/-/globby-6.1.0.tgz#f5a6d70e8395e21c858fb0489d64df02424d506c"
   integrity sha1-9abXDoOV4hyFj7BInWTfAkJNUGw=
@@ -12567,7 +12620,7 @@ homedir-polyfill@^1.0.1:
   dependencies:
     parse-passwd "^1.0.0"
 
-hoopy@^0.1.4:
+hoopy@^0.1.2, hoopy@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/hoopy/-/hoopy-0.1.4.tgz#609207d661100033a9a9402ad3dea677381c1b1d"
   integrity sha512-HRcs+2mr52W0K+x8RzcLzuPPmVIKMSv97RGHy0Ea9y/mpcaK+xTrjICA04KAHi4GRzxliNqNJEFYWHghy3rSfQ==
@@ -12717,6 +12770,11 @@ html-webpack-plugin@^4.0.0:
     tapable "^1.1.3"
     util.promisify "1.0.0"
 
+html_codesniffer@~2.4.1:
+  version "2.4.1"
+  resolved "https://registry.yarnpkg.com/html_codesniffer/-/html_codesniffer-2.4.1.tgz#c1ea1412360e44079b82eb2b06c816c5933aac9e"
+  integrity sha512-7g4Z8+7agJFi7XJGu2r0onIqA7ig9b26vFEvUE6DgtFJlJzy1ELYEKzzd5Xwam4xjHiHQ/w8yHO7KTGNcXnwzg==
+
 htmlparser2@^3.10.1, htmlparser2@^3.9.1:
   version "3.10.1"
   resolved "https://registry.yarnpkg.com/htmlparser2/-/htmlparser2-3.10.1.tgz#bd679dc3f59897b6a34bb10749c855bb53a9392f"
@@ -12729,6 +12787,16 @@ htmlparser2@^3.10.1, htmlparser2@^3.9.1:
     inherits "^2.0.1"
     readable-stream "^3.1.1"
 
+htmlparser2@^6.1.0:
+  version "6.1.0"
+  resolved "https://registry.yarnpkg.com/htmlparser2/-/htmlparser2-6.1.0.tgz#c4d762b6c3371a05dbe65e94ae43a9f845fb8fb7"
+  integrity sha512-gyyPk6rgonLFEDGoeRgQNaEUvdJ4ktTmmUh/h2t7s+M8oPpIPxgNACWa+6ESR57kXstwqPiCut0V8NRpcwgU7A==
+  dependencies:
+    domelementtype "^2.0.1"
+    domhandler "^4.0.0"
+    domutils "^2.5.2"
+    entities "^2.0.0"
+
 http-cache-semantics@^3.8.1:
   version "3.8.1"
   resolved "https://registry.yarnpkg.com/http-cache-semantics/-/http-cache-semantics-3.8.1.tgz#39b0e16add9b605bf0a9ef3d9daaf4843b4cacd2"
@@ -13770,6 +13838,11 @@ is-wsl@^2.1.1, is-wsl@^2.2.0:
   dependencies:
     is-docker "^2.0.0"
 
+is@^3.2.1:
+  version "3.3.0"
+  resolved "https://registry.yarnpkg.com/is/-/is-3.3.0.tgz#61cff6dd3c4193db94a3d62582072b44e5645d79"
+  integrity sha512-nW24QBoPcFGGHJGUwnfpI7Yc5CdqWNdsyHQszVE/z2pKHXzh7FZ5GWhJqSyaQ9wMkQnsTx+kAI8bHlCX4tKdbg==
+
 isarray@0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/isarray/-/isarray-0.0.1.tgz#8a18acfca9a8f4177e09abfc6038939b05d1eedf"
@@ -15164,7 +15237,7 @@ lodash.uniq@4.5.0, lodash.uniq@^4.5.0:
   resolved "https://registry.yarnpkg.com/lodash.uniq/-/lodash.uniq-4.5.0.tgz#d0225373aeb652adc1bc82e4945339a842754773"
   integrity sha1-0CJTc662Uq3BvILklFM5qEJ1R3M=
 
-lodash@4.17.21, lodash@>=4, lodash@^4, lodash@^4.0.0, lodash@^4.1.1, lodash@^4.15.0, lodash@^4.17.10, lodash@^4.17.11, lodash@^4.17.12, lodash@^4.17.14, lodash@^4.17.15, lodash@^4.17.19, lodash@^4.17.20, lodash@^4.17.21, lodash@^4.17.3, lodash@^4.17.4, lodash@^4.17.5, lodash@^4.2.1, lodash@^4.3.0, lodash@~4.17.10, lodash@~4.17.15:
+lodash@4.17.21, lodash@>=4, lodash@^4, lodash@^4.0.0, lodash@^4.1.1, lodash@^4.15.0, lodash@^4.17.10, lodash@^4.17.11, lodash@^4.17.12, lodash@^4.17.14, lodash@^4.17.15, lodash@^4.17.19, lodash@^4.17.20, lodash@^4.17.21, lodash@^4.17.3, lodash@^4.17.4, lodash@^4.17.5, lodash@^4.2.1, lodash@^4.3.0, lodash@~4.17.10, lodash@~4.17.15, lodash@~4.17.20:
   version "4.17.21"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
   integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
@@ -16263,7 +16336,7 @@ node-fetch@^1.0.1:
     encoding "^0.1.11"
     is-stream "^1.0.1"
 
-node-fetch@^2.5.0, node-fetch@^2.6.1:
+node-fetch@^2.5.0, node-fetch@^2.6.1, node-fetch@~2.6.0:
   version "2.6.1"
   resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.1.tgz#045bd323631f76ed2e2b55573394416b639a0052"
   integrity sha512-V4aYg89jEoVRxRb2fJdAg8FHvI7cEyYdVAh94HH0UIK8oJxUfkjlDQN9RbMx+bEjP7+ggMiFRprSti032Oipxw==
@@ -16362,6 +16435,14 @@ node-releases@^1.1.61, node-releases@^1.1.73:
   resolved "https://registry.yarnpkg.com/node-releases/-/node-releases-1.1.73.tgz#dd4e81ddd5277ff846b80b52bb40c49edf7a7b20"
   integrity sha512-uW7fodD6pyW2FZNZnp/Z3hvWKeEW1Y8R1+1CnErE8cXFXzl5blBOoVB41CvMer6P6Q0S5FXDwcHgFd1Wj0U9zg==
 
+node.extend@~2.0.2:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/node.extend/-/node.extend-2.0.2.tgz#b4404525494acc99740f3703c496b7d5182cc6cc"
+  integrity sha512-pDT4Dchl94/+kkgdwyS2PauDFjZG0Hk0IcHIB+LkW27HLDtdoeMxHTxZh39DYbPP8UflWXWj9JcdDozF+YDOpQ==
+  dependencies:
+    has "^1.0.3"
+    is "^3.2.1"
+
 nodemon@2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/nodemon/-/nodemon-2.0.2.tgz#9c7efeaaf9b8259295a97e5d4585ba8f0cbe50b0"
@@ -17028,6 +17109,13 @@ p-timeout@^3.1.0:
   dependencies:
     p-finally "^1.0.0"
 
+p-timeout@~2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/p-timeout/-/p-timeout-2.0.1.tgz#d8dd1979595d2dc0139e1fe46b8b646cb3cdf038"
+  integrity sha512-88em58dDVB/KzPEx1X0N3LwFfYZPyDc4B6eF38M1rk9VTZMbxXXgjugz8mmwpS9Ox4BDZ+t6t3QP5+/gazweIA==
+  dependencies:
+    p-finally "^1.0.0"
+
 p-try@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/p-try/-/p-try-1.0.0.tgz#cbc79cdbaf8fd4228e13f621f2b1a237c1b207b3"
@@ -17045,6 +17133,72 @@ p-waterfall@^1.0.0:
   dependencies:
     p-reduce "^1.0.0"
 
+pa11y-ci@2.4.2:
+  version "2.4.2"
+  resolved "https://registry.yarnpkg.com/pa11y-ci/-/pa11y-ci-2.4.2.tgz#76cdbd5bf2ad6564e1001626153cc367c92fd91c"
+  integrity sha512-Gv8vLm9t394jfErQNPOjbrqWGWM1/VdjiMPmLTS7K5tHKrm4pZgBhMdLOhEPPmfFkbcCZac37qjSr6lfln66Bg==
+  dependencies:
+    async "~2.6.3"
+    chalk "~1.1.3"
+    cheerio "~1.0.0-rc.3"
+    commander "~2.20.3"
+    globby "~6.1.0"
+    lodash "~4.17.20"
+    node-fetch "~2.6.0"
+    pa11y "~5.3.1"
+    protocolify "~3.0.0"
+    puppeteer "~1.19.0"
+    wordwrap "~1.0.0"
+
+pa11y-reporter-cli@~1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/pa11y-reporter-cli/-/pa11y-reporter-cli-1.0.1.tgz#a3d47c98d328e1709f419abf322013ef9bdbf4e3"
+  integrity sha512-k+XPl5pBU2R1J6iagGv/GpN/dP7z2cX9WXqO0ALpBwHlHN3ZSukcHCOhuLMmkOZNvufwsvobaF5mnaZxT70YyA==
+  dependencies:
+    chalk "^2.1.0"
+
+pa11y-reporter-csv@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/pa11y-reporter-csv/-/pa11y-reporter-csv-1.0.0.tgz#c19a99e41c14d82669a1dfd907ada7269d423b98"
+  integrity sha512-S2gFgbAvONBzAVsVbF8zsYabszrzj7SKhQxrEbw19zF0OFI8wCWn8dFywujYYkg674rmyjweSxSdD+kHTcx4qA==
+
+pa11y-reporter-json@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/pa11y-reporter-json/-/pa11y-reporter-json-1.0.0.tgz#5762959eeea89cc451a2e1160aa0526280ebfe29"
+  integrity sha512-EdLrzh1hyZ8DudCSSrcakgtsHDiSsYNsWLSoEAo1JnFTIK8hYpD7vL+xgd0u+LXDxz9wLLFnckdubpklaRpl/w==
+  dependencies:
+    bfj "^4.2.3"
+
+pa11y-runner-axe@~1.0.1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/pa11y-runner-axe/-/pa11y-runner-axe-1.0.2.tgz#3cdd8e6ff8fba40e7466ad603ac5df38c1475927"
+  integrity sha512-HMw5kQZz16vS5Bhe067esgeuULNzFYP4ixOFAHxOurwGDptlyc2OqH6zfUuK4szB9tbgb5F23v3qz9hCbkGRpw==
+  dependencies:
+    axe-core "^3.5.1"
+
+pa11y-runner-htmlcs@~1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/pa11y-runner-htmlcs/-/pa11y-runner-htmlcs-1.2.1.tgz#cbbeb105ed11b4fafbfb43e20bf4d655efc378aa"
+  integrity sha512-flatSp6moEbqzny18b2IEoDXEWj6xJbJrszdBjUAPQBCN11QRW+SZ0U4uFnxNTLPpXs30N/a9IlH4vYiRr2nPg==
+  dependencies:
+    html_codesniffer "~2.4.1"
+
+pa11y@~5.3.1:
+  version "5.3.1"
+  resolved "https://registry.yarnpkg.com/pa11y/-/pa11y-5.3.1.tgz#589c65189c506ae3122c98b57ba9d5ed29bd2bed"
+  integrity sha512-hRxe9mYUqwODrlIXiTKUrlJX8zgrJZG84s0IrJnvvI8reO6n4RtiF20juTaGukjuHtH8p3tgFh+i2gPcRZSyUg==
+  dependencies:
+    commander "~3.0.2"
+    node.extend "~2.0.2"
+    p-timeout "~2.0.1"
+    pa11y-reporter-cli "~1.0.1"
+    pa11y-reporter-csv "~1.0.0"
+    pa11y-reporter-json "~1.0.0"
+    pa11y-runner-axe "~1.0.1"
+    pa11y-runner-htmlcs "~1.2.1"
+    puppeteer "~1.19.0"
+    semver "~5.7.0"
+
 package-json@^4.0.0:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/package-json/-/package-json-4.0.1.tgz#8869a0401253661c4c4ca3da6c2121ed555f5eed"
@@ -17180,6 +17334,13 @@ parse-url@^5.0.0:
     parse-path "^4.0.0"
     protocols "^1.4.0"
 
+parse5-htmlparser2-tree-adapter@^6.0.1:
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/parse5-htmlparser2-tree-adapter/-/parse5-htmlparser2-tree-adapter-6.0.1.tgz#2cdf9ad823321140370d4dbf5d3e92c7c8ddc6e6"
+  integrity sha512-qPuWvbLgvDGilKc5BoicRovlT4MtYT6JfJyBOMDsKoiT+GiuP5qyrPCnR9HcPECIJJmZh5jRndyNThnhhb/vlA==
+  dependencies:
+    parse5 "^6.0.1"
+
 parse5@5.1.0:
   version "5.1.0"
   resolved "https://registry.yarnpkg.com/parse5/-/parse5-5.1.0.tgz#c59341c9723f414c452975564c7c00a68d58acd2"
@@ -17197,7 +17358,7 @@ parse5@^3.0.1:
   dependencies:
     "@types/node" "*"
 
-parse5@^6.0.0:
+parse5@^6.0.0, parse5@^6.0.1:
   version "6.0.1"
   resolved "https://registry.yarnpkg.com/parse5/-/parse5-6.0.1.tgz#e1a1c085c569b3dc08321184f19a39cc27f7c30b"
   integrity sha512-Ofn/CTFzRGTTxwpNEs9PP93gXShHcTq255nzRYSKe8AkVpZY7e1fpmTfOyoIvjP5HG7Z2ZM7VS9PPhQGW2pOpw==
@@ -18224,6 +18385,11 @@ prepend-http@^1.0.0, prepend-http@^1.0.1:
   resolved "https://registry.yarnpkg.com/prepend-http/-/prepend-http-1.0.4.tgz#d4f4562b0ce3696e41ac52d0e002e57a635dc6dc"
   integrity sha1-1PRWKwzjaW5BrFLQ4ALlemNdxtw=
 
+prepend-http@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/prepend-http/-/prepend-http-3.0.1.tgz#3e724d58fd5867465b300bb9615009fa2f8ee3b6"
+  integrity sha512-BLxfZh+m6UiAiCPZFJ4+vYoL7NrRs5XgCTRrjseATAggXhdZKKxn+JUNmuVYWY23bDHgaEHodxw8mnmtVEDtHw==
+
 prettier-linter-helpers@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/prettier-linter-helpers/-/prettier-linter-helpers-1.0.0.tgz#d23d41fe1375646de2d0104d3454a3008802cf7b"
@@ -18450,6 +18616,14 @@ protocol-buffers-schema@^3.3.1:
   resolved "https://registry.yarnpkg.com/protocol-buffers-schema/-/protocol-buffers-schema-3.5.1.tgz#8388e768d383ac8cbea23e1280dfadb79f4122ad"
   integrity sha512-YVCvdhxWNDP8/nJDyXLuM+UFsuPk4+1PB7WGPVDzm3HTHbzFLxQYeW2iZpS4mmnXrQJGBzt230t/BbEb7PrQaw==
 
+protocolify@~3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/protocolify/-/protocolify-3.0.0.tgz#addf3f90b4f2b86b65cdaf260a761e2bf556854e"
+  integrity sha512-PuvDJOkKJMVQx8jSNf8E5g0bJw/UTKm30mTjFHg4N30c8sefgA5Qr/f8INKqYBKfvP/MUSJrj+z1Smjbq4/3rQ==
+  dependencies:
+    file-url "^3.0.0"
+    prepend-http "^3.0.0"
+
 protocols@^1.1.0, protocols@^1.4.0:
   version "1.4.8"
   resolved "https://registry.yarnpkg.com/protocols/-/protocols-1.4.8.tgz#48eea2d8f58d9644a4a32caae5d5db290a075ce8"
@@ -18561,6 +18735,20 @@ puppeteer-core@1.18.1:
     rimraf "^2.6.1"
     ws "^6.1.0"
 
+puppeteer@~1.19.0:
+  version "1.19.0"
+  resolved "https://registry.yarnpkg.com/puppeteer/-/puppeteer-1.19.0.tgz#e3b7b448c2c97933517078d7a2c53687361bebea"
+  integrity sha512-2S6E6ygpoqcECaagDbBopoSOPDv0pAZvTbnBgUY+6hq0/XDFDOLEMNlHF/SKJlzcaZ9ckiKjKDuueWI3FN/WXw==
+  dependencies:
+    debug "^4.1.0"
+    extract-zip "^1.6.6"
+    https-proxy-agent "^2.2.1"
+    mime "^2.0.3"
+    progress "^2.0.1"
+    proxy-from-env "^1.0.0"
+    rimraf "^2.6.1"
+    ws "^6.1.0"
+
 q@^1.5.1:
   version "1.5.1"
   resolved "https://registry.yarnpkg.com/q/-/q-1.5.1.tgz#7e32f75b41381291d04611f1bf14109ac00651d7"
@@ -20563,7 +20751,7 @@ semver-regex@^2.0.0:
   resolved "https://registry.yarnpkg.com/semver-regex/-/semver-regex-2.0.0.tgz#a93c2c5844539a770233379107b38c7b4ac9d338"
   integrity sha512-mUdIBBvdn0PLOeP3TEkMH7HHeUP3GjsXCwKarjv/kGmUFOYg1VqEemKhoQpWMu6X2I8kHeuVdGibLGkVK+/5Qw==
 
-"semver@2 || 3 || 4 || 5", "semver@2.x || 3.x || 4 || 5", semver@^5.0.3, semver@^5.1.0, semver@^5.3.0, semver@^5.4.1, semver@^5.5.0, semver@^5.5.1, semver@^5.6.0, semver@^5.7.0, semver@^5.7.1:
+"semver@2 || 3 || 4 || 5", "semver@2.x || 3.x || 4 || 5", semver@^5.0.3, semver@^5.1.0, semver@^5.3.0, semver@^5.4.1, semver@^5.5.0, semver@^5.5.1, semver@^5.6.0, semver@^5.7.0, semver@^5.7.1, semver@~5.7.0:
   version "5.7.1"
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.1.tgz#a954f931aeba508d307bbf069eff0c01c96116f7"
   integrity sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==
@@ -22218,7 +22406,7 @@ trough@^1.0.0:
   resolved "https://registry.yarnpkg.com/trough/-/trough-1.0.5.tgz#b8b639cefad7d0bb2abd37d433ff8293efa5f406"
   integrity sha512-rvuRbTarPXmMb79SmzEp8aqXNKcK+y0XaB298IXueQ8I2PsrATcPBCSPyK/dDNa2iWOhKlfNnOjdAOTBU/nkFA==
 
-tryer@^1.0.1:
+tryer@^1.0.0, tryer@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/tryer/-/tryer-1.0.1.tgz#f2c85406800b9b0f74c9f7465b81eaad241252f8"
   integrity sha512-c3zayb8/kWWpycWYg87P71E1S1ZL6b6IJxfb5fvsUgsf0S2MVGaDhDXXjDMpdCpfWXqptc+4mXwmiy1ypXqRAA==
@@ -22308,7 +22496,7 @@ tslib@^1.10.0, tslib@^1.8.1, tslib@^1.9.0, tslib@^1.9.3:
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.14.1.tgz#cf2d38bdc34a134bcaf1091c41f6619e2f672d00"
   integrity sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg==
 
-tslib@^2.0.0, tslib@^2.0.1, tslib@^2.0.3, tslib@^2.1.0:
+tslib@^2.0.0, tslib@^2.0.1, tslib@^2.0.3, tslib@^2.1.0, tslib@^2.2.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.3.0.tgz#803b8cdab3e12ba581a4ca41c8839bbb0dacb09e"
   integrity sha512-N82ooyxVNm6h1riLCoyS9e3fuJ3AMG2zIZs2Gd1ATcSFjSA23Q0fzjjZeh0jbJvWVDZ0cJT8yaNNaaXHzueNjg==