firebase.json

{
  "hosting": {
    "public": "src",
    "ignore": [
      "firebase.json",
      "**/.*",
      "**/node_modules/**"
    ],
    "headers": [
      {
        "source": "**",
        "headers": [
          {"key": "X-Frame-Options", "value": "SAMEORIGIN"},
          {"key": "X-Content-Type-Options", "value": "nosniff"},
          {"key": "X-UA-Compatible", "value": "ie=edge"},
          {"key": "X-XSS-Protection", "value": "1; mode=block"}
        ]
      },
      {
        "source": "**/*.@(jpg|jpeg|gif|png|webp|ogg|mp3|woff|woff2)",
        "headers": [
          {"key": "Cache-Control", "value": "max-age=31556926, public"}
        ]
      },
      {
        "source": "**/*.@(json|xml|css|mjs|js)",
        "headers": [
          {"key": "Cache-Control", "value": "max-age=3600, public"}
        ]
      },
      {
        "source": "**/*.@(html|htm|appcache|webapp)",
        "headers": [
          {"key": "Cache-Control", "value": "max-age=1, private, no-store, no-cache, must-revalidate, no-transform"}
        ]
      },
      {
        "source": "**/*service-worker.@(js|mjs)",
        "headers": [
          {"key": "Cache-Control", "value": "max-age=1, private, no-store, no-cache, must-revalidate"}
        ]
      }
    ],

    "redirects": [
      {
        "source": "**/index.html",
        "destination": "/",
        "type": 301
      }
    ]
  }
}