lighthouserc.json

{
  "ci": {
    "collect": {
      "startServerCommand": "yarn start",
      "url": [
        "http://localhost:3000/",
        "http://localhost:3000/living-room"
      ],
      "numberOfRuns": 3,
      "assert": {
        "includePassedAssertions": false,
        "assertMatrix": [
          {
            "matchingUrlPattern": ".*",
            "assertions": {
              "categories:performance": ["warn", { "aggregationMethod": "median-run", "minScore": 0.9 }],
              "categories:accessibility": ["warn", { "aggregationMethod": "pessimistic", "minScore": 1 }],
              "categories:best-practices": ["warn", { "aggregationMethod": "pessimistic", "minScore": 1 }],
              "categories:pwa": ["warn", { "aggregationMethod": "pessimistic", "minScore": 1 }],
              "categories:seo": ["warn", { "aggregationMethod": "pessimistic", "minScore": 1 }],

              "largest-contentful-paint": ["warn", { "aggregationMethod": "median-run", "maxNumericValue": 2500 }],
              "total-blocking-time": ["warn", { "aggregationMethod": "median-run", "maxNumericValue": 200 }],
              "interactive": ["warn", { "aggregationMethod": "median-run", "maxNumericValue": 3800 }],
              "first-contentful-paint": ["warn", { "aggregationMethod": "median-run", "maxNumericValue": 1800 }],
              "cumulative-layout-shift": ["warn", { "aggregationMethod": "median-run", "maxNumericValue": 0.1 }],
              "speed-index": ["warn", { "aggregationMethod": "median-run", "maxNumericValue": 3400 }],

              "dom-size": ["warn", { "maxNumericValue": 800 }]
            }
          },
          {
            "matchingUrlPattern": ".*",
            "assertions": {
              "categories:performance": ["warn", { "aggregationMethod": "median-run", "minScore": 0.8 }],
              "categories:accessibility": ["warn", { "aggregationMethod": "pessimistic", "minScore": 0.9 }],
              "categories:best-practices": ["warn", { "aggregationMethod": "pessimistic", "minScore": 0.9 }],
              "categories:pwa": ["warn", { "aggregationMethod": "pessimistic", "minScore": 0.9 }],
              "categories:seo": ["warn", { "aggregationMethod": "pessimistic", "minScore": 0.9 }],

              "total-blocking-time": ["warn", { "aggregationMethod": "median-run", "maxNumericValue": 600 }],
              "largest-contentful-paint": ["warn", { "aggregationMethod": "median-run", "maxNumericValue": 5200 }],
              "interactive": ["warn", { "aggregationMethod": "median-run", "maxNumericValue": 7300 }],
              "first-contentful-paint": ["warn", { "aggregationMethod": "median-run", "maxNumericValue": 3000 }],
              "cumulative-layout-shift": ["warn", { "aggregationMethod": "median-run", "maxNumericValue": 0.25 }],
              "speed-index": ["warn", { "aggregationMethod": "median-run", "maxNumericValue": 5800 }],

              "dom-size": ["warn", { "maxNumericValue": 1400 }],

              "resource-summary:media:size": ["warn", { "maxNumericValue": 1 }],
              "resource-summary:stylesheet:size": ["warn", { "maxNumericValue": 21000 }]
            }
          },
          {
            "matchingUrlPattern": "http://localhost:3000/$",
            "assertions": {
              "resource-summary:image:size": ["warn", { "maxNumericValue": 210000 }],
              "resource-summary:script:size": ["warn", { "maxNumericValue": 360000 }],
              "resource-summary:document:size": ["warn", { "maxNumericValue": 21000 }],
              "resource-summary:font:size": ["warn", { "maxNumericValue": 65000 }]
            }
          },
          {
            "matchingUrlPattern": "http://localhost:3000/living-room/sofas/couch-purple-dreams_134",
            "assertions": {
              "resource-summary:image:size": ["warn", { "maxNumericValue": 20000 }],
              "resource-summary:script:size": ["warn", { "maxNumericValue": 330000 }],
              "resource-summary:document:size": ["warn", { "maxNumericValue": 21000 }],
              "resource-summary:font:size": ["warn", { "maxNumericValue": 85000 }]
            }
          }
        ]
      }
    },
    "upload": {
      "target": "temporary-public-storage"
    }
  }
}