Firebase.json Ionic PWA Toolkit

firebase.json

{
  "hosting": {
    "public": "www",
    "rewrites": [
      {
        "source": "**",
        "destination": "/index.html"
      }
    ],
    "headers": [
      {
        "source": "sw.js",
        "headers" : [ {
          "key" : "Cache-Control",
          "value" : "no-cache"
        } ]
      },
      {
        "source": "/",
        "headers": [
          {
            "key": "Link",
            "value": "</build/app/app.mmlkvqio.js>;rel=preload;as=script,</build/app/otnhfzuk.js>;rel=preload;as=script,</build/app/vqdmmwyk.js>;rel=preload;as=script,</build/app/ga7zzchw.js>;rel=preload;as=script,</build/app/icy6acjg.js>;rel=preload;as=script,</build/app/5piuuqes.js>;rel=preload;as=script,</build/app/mtmzksh6.js>;rel=preload;as=script,</build/app/rqk2ui2b.js>;rel=preload;as=script,</build/app/cf8a9frs.js>;rel=preload;as=script,</build/app/7xjek45h.js>;rel=preload;as=script,</build/app/5e3mm8py.js>;rel=preload;as=script,</build/app/svg/md-ionic.js>;rel=preload;as=script"
          }
        ]
      }
    ]
  }
}