generator-jekyll-starter-kit/generators/app/templates/my-awesome-site/lighthouserc.json

Combine Jekyll and Google web-starter-kit to enjoy the best of both worlds

{
  "ci": {
    "collect": {
      "staticDistDir": "./_site"
    },
    "assert": {
      "assertions": {
        "categories:performance": ["warn", { "minScore": 0.8 }],
        "categories:accessibility": ["error", { "minScore": 0.8 }],
        "categories:best-practices": ["error", { "minScore": 0.8 }],
        "categories:seo": ["error", { "minScore": 0.8 }]
      }
    }
  }
}