firebase.json

{
  "hosting": {
    "public": "dist/www",
    "rewrites": [{
      "source": "**",
      "destination": "/index.html"
    }],
    "headers": [
      {
        "source": "**",
        "headers" : [ { "key" : "Cache-Control", "value" : "no-cache"} ]
      },
      {
        "source" : "**/*.js",
        "headers" : [ { "key" : "Cache-Control",  "value" : "max-age=604800" }]
      },
      {
        "source" : "**/*.css",
        "headers" : [ { "key" : "Cache-Control", "value" : "max-age=604800" }]
      },
      {
        "source" : "**/*.@(jpg|jpeg|gif|png)",
        "headers" : [ { "key" : "Cache-Control", "value" : "max-age=86400" } ]
      },
      {
        "source" : "/cache.manifest",
        "headers" : [ { "key" : "Cache-Control", "value" : "no-cache"} ]
      },
      {
        "source" : "/index.html",
        "headers" : [ { "key" : "Cache-Control", "value" : "no-cache"} ]
      },
      {
        "source": "/service-worker.js",
        "headers": [ {"key": "Cache-Control", "value": "no-cache"} ]
      }
    ]
  }
}