firebase.json

{
  "hosting": [
    {
      "target": "main",
      "public": "build",
      "cleanUrls": true,
      "trailingSlash": false,
      "ignore": ["firebase.json", "**/.*", "**/node_modules/**"],
      "headers": [
        {
          "source": "**/*.@(eot|otf|ttf|ttc|woff|woff2|font.css)",
          "headers": [
            {
              "key": "Access-Control-Allow-Origin",
              "value": "*"
            }
          ]
        },
        {
          "source": "**/*.@(js|css|woff|woff2)",
          "headers": [
            {
              "key": "Cache-Control",
              "value": "max-age=31536000"
            }
          ]
        },
        {
          "source": "**/*.@(jpg|jpeg|gif|png|webp|svg|webm|mp4)",
          "headers": [
            {
              "key": "Cache-Control",
              "value": "max-age=31536000"
            }
          ]
        },
        {
          "source": "widget/**/*.@(jpg|jpeg|gif|png|webp|svg|woff|woff2|css|js)",
          "headers": [
            {
              "key": "Cache-Control",
              "value": "max-age=3600"
            }
          ]
        }
      ],
      "rewrites": [
        {
          "source": "/api/**",
          "run": {
            "serviceId": "backend",
            "region": "us-central1"
          }
        },
        {
          "source": "/bigcommerce/**",
          "run": {
            "serviceId": "backend",
            "region": "us-central1"
          }
        },
        {
          "source": "robots.txt",
          "destination": "/landing/robots.txt"
        },
        {
          "source": "/pay",
          "run": {
            "serviceId": "backend",
            "region": "us-central1"
          }
        },
        {
          "source": "**",
          "destination": "/landing/index.html"
        }
      ]
    },
    {
      "target": "subscription",
      "public": "build/subscription",
      "cleanUrls": true,
      "trailingSlash": false,
      "ignore": ["firebase.json", "**/.*", "**/node_modules/**"],
      "headers": [
        {
          "source": "**/*.@(eot|otf|ttf|ttc|woff|woff2|font.css)",
          "headers": [
            {
              "key": "Access-Control-Allow-Origin",
              "value": "*"
            }
          ]
        },
        {
          "source": "**/*.@(js|css|woff|woff2)",
          "headers": [
            {
              "key": "Cache-Control",
              "value": "max-age=31536000"
            }
          ]
        },
        {
          "source": "**/*.@(jpg|jpeg|gif|png|webp|svg|webm|mp4)",
          "headers": [
            {
              "key": "Cache-Control",
              "value": "max-age=31536000"
            }
          ]
        }
      ],
      "rewrites": [
        {
          "source": "/pay",
          "run": {
            "serviceId": "backend",
            "region": "us-central1"
          }
        },
        {
          "source": "**",
          "destination": "/index.html"
        }
      ]
    }
  ]
}