build: add Lighthouse CI checks

Author: brandonroberts

.github/workflows/lighthouse.yml

@@ -0,0 +1,19 @@
+name: Lighthouse CI
+on: [push]
+jobs:
+  lhci:
+    name: Lighthouse
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Use Node.js 22.x
+        uses: actions/setup-node@v3
+        with:
+          node-version: 22.x
+      - name: npm install, build
+        run: |
+          npm install
+          npm run build
+      - name: run Lighthouse CI
+        run: |
+          npm run lighthouse

.gitignore

@@ -47,4 +47,6 @@ testem.log
 .DS_Store
 Thumbs.db
 scully.log
-.nx/workspace-data
+.nx/workspace-data
+
+.lighthouseci

.lighthouserc.cjs

@@ -0,0 +1,35 @@
+const staticDistDir = './dist/analog/public';
+
+module.exports = {
+  ci: {
+    collect: {
+      staticDistDir,
+      url: ['http://localhost', 'http://localhost/blog'],
+      maxAutodiscoverUrls: 0,
+    },
+    upload: {
+      target: 'temporary-public-storage',
+    },
+    assert: {
+      preset: "lighthouse:recommended",
+      assertions: {
+        "first-contentful-paint": [
+          "warn",
+          {
+            "maxNumericValue": 2500,
+            "aggregationMethod": "optimistic"
+          }
+        ],
+        interactive: [
+          "warn",
+          {
+            "maxNumericValue": 5000,
+            "aggregationMethod": "optimistic"
+          }
+        ],
+        "uses-long-cache-ttl": "off",
+        "uses-http2": "off"
+      }
+    },
+  },
+};