firebase.json

{
    "hosting": [
        {
            "target": "aot",
            "public": "functions/dist/browser",
            "ignore": [
                "firebase.json",
                "**/.*",
                "**/node_modules/**"
            ],
            "rewrites": [
                {
                    "source": "**",
                    "destination": "/index.html"
                }
            ],
            "headers": [
                {
                    "source": "https://fonts.googleapis.com/css",
                    "headers": [
                        {
                            "key": "Access-Control-Allow-Origin",
                            "value": "*"
                        },
                        {
                            "key": "Cache-Control",
                            "value": "max-age=604800"
                        }
                    ]
                },
                {
                    "source": "**/*.@(eot|otf|ttf|ttc|woff|woff2|font.css)",
                    "headers": [
                        {
                            "key": "Access-Control-Allow-Origin",
                            "value": "*"
                        },
                        {
                            "key": "Cache-Control",
                            "value": "max-age=604800"
                        }
                    ]
                },
                {
                    "source": "**/*.@(jpg|jpeg|gif|png|js|css)",
                    "headers": [
                        {
                            "key": "Cache-Control",
                            "value": "max-age=604800"
                        },
                        {
                            "key": "Content-Encoding",
                            "value": "gzip"
                        }
                    ]
                },
                {
                    "source": "404.html",
                    "headers": [
                        {
                            "key": "Cache-Control",
                            "value": "max-age=300"
                        }
                    ]
                }
            ],
            "cleanUrls": true,
            "trailingSlash": false
        },
        {
            "target": "ssr",
            "public": "public",
            "ignore": [
                "firebase.json",
                "**/.*",
                "**/node_modules/**"
            ],
            "rewrites": [
                {
                    "source": "**/*.@(css|js)",
                    "destination": "/index2.html"
                },
                {
                    "source": "**",
                    "function": "ssr"
                }
            ],
            "headers": [
                {
                    "source": "**/*.@(jpg|jpeg|gif|png|js|css)",
                    "headers": [
                        {
                            "key": "Cache-Control",
                            "value": "max-age=604800"
                        }
                    ]
                },
                {
                    "source": "404.html",
                    "headers": [
                        {
                            "key": "Cache-Control",
                            "value": "max-age=300"
                        }
                    ]
                }
            ]
        }
    ],
    "firestore": {
        "rules": "firestore.rules",
        "indexes": "firestore.indexes.json"
    }
}