firebase.json

{
  "hosting": [
    {
      "target": "client",
      "public": "packages/client/dist",
      "ignore": ["firebase.json", "**/.*", "**/node_modules/**"],
      "headers": [
        {
          "source": "*",
          "headers": [
            {
              "key": "Cross-Origin-Opener-Policy",
              "value": "same-origin"
            },
            {
              "key": "Cross-Origin-Embedder-Policy",
              "value": "require-corp"
            },
            {
              "key": "Cross-Origin-Resource-Policy",
              "value": "cross-origin"
            },
            {
              "key": "Access-Control-Allow-Origin",
              "value": "*"
            }
          ]
        }
      ]
    },
    {
      "target": "website",
      "public": "packages/website/dist",
      "ignore": ["firebase.json", "**/.*", "**/node_modules/**"],
      "headers": [
        {
          "source": "**",
          "headers": [
            {
              "key": "Cross-Origin-Opener-Policy",
              "value": "same-origin"
            },
            {
              "key": "Cross-Origin-Embedder-Policy",
              "value": "require-corp"
            }
          ]
        },
        {
          "source": "/langs/*",
          "headers": [
            {
              "key": "Access-Control-Allow-Origin",
              "value": "*"
            }
          ]
        }
      ],
      "rewrites": [
        {
          "source": "**",
          "destination": "/index.html"
        }
      ]
    }
  ]
}