firebase.json

{
  "hosting": {
    "public": "build/",
    "ignore": [
      "maps/**"
    ],
    "headers": [
      {
        "source": "/index.html",
        "headers": [{
          "key": "Cache-Control",
          "value": "public, max-age=86400"
        }]
      },
      {
        "source": "/scripts/app.js",
        "headers": [{
          "key": "Cache-Control",
          "value": "public, max-age=86400"
        }]
      },
      {
        "source": "/service-worker.js",
        "headers": [{
          "key": "Cache-Control",
          "value": "no-cache, no-store, max-age=1"
        }]
      },
      {
        "source" : "**/*.@(jpg|jpeg|gif|png|ico)",
        "headers" : [{
          "key" : "Cache-Control",
          "value" : "public, max-age=31536000"
        }]
      },
      {
        "source" : "/manifest.json",
        "headers" : [{
          "key" : "Cache-Control",
          "value" : "public, max-age=2592000"
        }]
      }
    ],
    "rewrites": [
      {
        "source": "**",
        "destination": "/index.html"
      }
    ]
  }
}