run lighthouse tests on desktop instead of mobile

Author: jakejarvis

.github/workflows/lighthouse.yml

@@ -18,10 +18,13 @@ jobs:
         lfs: false
     - uses: actions/setup-node@v2
       with:
-        node-version: 14.x
-    - run: npm install -g @lhci/cli
+        node-version: 12.x
+    - uses: browser-actions/setup-chrome@latest
+      with:
+        chrome-version: stable
+    - run: PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=true npm install -g @lhci/cli
     - run: |
-        lhci healthcheck
+        chrome --version
         lhci --version
         curl $LHCI_SERVER_BASE_URL/version
         echo "ref: ${{ github.event.deployment.ref }}"

.lighthouserc.json

@@ -1,20 +1,19 @@
 {
   "ci": {
     "collect": {
-      "numberOfRuns": 3
+      "numberOfRuns": 3,
+      "settings": {
+        "preset": "desktop",
+        "chromeFlags": "--no-sandbox"
+      }
     },
     "assert": {
       "preset": "lighthouse:no-pwa",
       "assertions": {
-        "color-contrast": "warn",
         "csp-xss": "warn",
-        "errors-in-console": "warn",
-        "inspector-issues": "warn",
         "link-text": "warn",
         "long-tasks": "warn",
-        "non-composited-animations": "warn",
         "total-byte-weight": ["warn", {"minScore": 0.9}],
-        "unminified-javascript": "warn",
         "unsized-images": "warn",
         "unused-css-rules": "warn",
         "unused-javascript": "warn",
@@ -25,7 +24,8 @@
         "uses-long-cache-ttl": "off",
         "uses-responsive-images": "off",
         "uses-webp-images": "off"
-      }
+      },
+      "includePassedAssertions": true
     },
     "upload": {
       "target": "lhci",