firebase.json

{
  "hosting": [
    {
      "target": "portfolio",
      "public": "build",
      "rewrites": [
        {
          "source": "/functions/**",
          "function": "app"
        }
      ],
      "redirects": [
        {
          "source": "/index.html",
          "destination": "/",
          "type": 301
        }
      ],
      "headers": [
        {
          "source": "**/*.@(eot|otf|ttf|ttc|woff|woff2|font.css)",
          "headers": [
            {
              "key": "Access-Control-Allow-Origin",
              "value": "*"
            }
          ]
        },
        {
          "source": "**/*.@(jpg|jpeg|gif|png|mp4)",
          "headers": [
            {
              "key": "Cache-Control",
              "value": "max-age=31536000"
            }
          ]
        },
        {
          "source": "**/*.@(css|js)",
          "headers": [
            {
              "key": "Cache-Control",
              "value": "max-age=31536000"
            }
          ]
        },
        {
          "source": "**/*.@(woff|woff2)",
          "headers": [
            {
              "key": "Cache-Control",
              "value": "max-age=31536000"
            }
          ]
        },
        {
          "source": "/service-worker.js",
          "headers": [
            {
              "key": "Cache-Control",
              "value": "no-cache"
            }
          ]
        }
      ]
    },
    {
      "target": "storybook",
      "public": "build-storybook",
      "headers": [
        {
          "source": "**/*.@(eot|otf|ttf|ttc|woff|woff2|font.css)",
          "headers": [
            {
              "key": "Access-Control-Allow-Origin",
              "value": "*"
            }
          ]
        },
        {
          "source": "**/*.@(jpg|jpeg|gif|png|mp4)",
          "headers": [
            {
              "key": "Cache-Control",
              "value": "max-age=31536000"
            }
          ]
        },
        {
          "source": "**/*.@(css|js)",
          "headers": [
            {
              "key": "Cache-Control",
              "value": "max-age=31536000"
            }
          ]
        },
        {
          "source": "**/*.@(woff|woff2)",
          "headers": [
            {
              "key": "Cache-Control",
              "value": "max-age=31536000"
            }
          ]
        }
      ]
    }
  ],
  "functions": {
    "predeploy": [
      "npm --prefix ./functions run lint"
    ]
  }
}