3 replies

Tanstack Start overwrites Wrangler Environments

Wrangler

Workers

Hey all,

I am trying to create a Tanstack Start app on Cloudflare workers with a dev and a prod version.

I tried to use Cloudflare Environments, but it seems that the generated

wrangler.json

wrangler.json

dist/server

dist/server

ignores the

env

env

configs.

Specifically, I have defined a

dev

dev

environment with a different name and domain, but wrangler only deploys the default environment.

My wrangler.jsonc:

{
  "$schema": "node_modules/wrangler/config-schema.json",
  "name": "test-app",
  "compatibility_date": "2025-11-21",
  "compatibility_flags": ["nodejs_compat"],
  "main": "@tanstack/react-start/server-entry",
  "workers_dev": false,
  "preview_urls": false,
  "services": [
    {
      "binding": "FOO_API",
      "service": "foo-api-backend" // prod service
    }
  ],
  "vars": {
    // prod domain
    "VITE_API_BASE_URL": "https://test-app.app"
  },
  "env": {
    // dev environment configuration
    "dev": {
      "name": "test-app-dev",
      "services": [
        {
          "binding": "FOO_API",
          "service": "foo-api-backend-dev" // dev service
        }
      ],
      "workers_dev": false,
      "preview_urls": false,
      "vars": {
        // dev domain
        "VITE_API_BASE_URL": "https://dev.test-app.app"
      }
    }
  }
}

{
  "$schema": "node_modules/wrangler/config-schema.json",
  "name": "test-app",
  "compatibility_date": "2025-11-21",
  "compatibility_flags": ["nodejs_compat"],
  "main": "@tanstack/react-start/server-entry",
  "workers_dev": false,
  "preview_urls": false,
  "services": [
    {
      "binding": "FOO_API",
      "service": "foo-api-backend" // prod service
    }
  ],
  "vars": {
    // prod domain
    "VITE_API_BASE_URL": "https://test-app.app"
  },
  "env": {
    // dev environment configuration
    "dev": {
      "name": "test-app-dev",
      "services": [
        {
          "binding": "FOO_API",
          "service": "foo-api-backend-dev" // dev service
        }
      ],
      "workers_dev": false,
      "preview_urls": false,
      "vars": {
        // dev domain
        "VITE_API_BASE_URL": "https://dev.test-app.app"
      }
    }
  }
}

Is there a way to use Wrangler environments with Tanstack Start, or should I avoid using environments with Tanstack Start for now?

Cloudflare Developers•2w ago•

3 replies

Peter Hase

Tanstack Start overwrites Wrangler Environments

Wrangler

Workers

Hey all,

I am trying to create a Tanstack Start app on Cloudflare workers with a dev and a prod version.

I tried to use Cloudflare Environments, but it seems that the generated

wrangler.json

wrangler.json

dist/server

dist/server

ignores the

env

env

configs.

Specifically, I have defined a

dev

dev

environment with a different name and domain, but wrangler only deploys the default environment.

My wrangler.jsonc:

{
  "$schema": "node_modules/wrangler/config-schema.json",
  "name": "test-app",
  "compatibility_date": "2025-11-21",
  "compatibility_flags": ["nodejs_compat"],
  "main": "@tanstack/react-start/server-entry",
  "workers_dev": false,
  "preview_urls": false,
  "services": [
    {
      "binding": "FOO_API",
      "service": "foo-api-backend" // prod service
    }
  ],
  "vars": {
    // prod domain
    "VITE_API_BASE_URL": "https://test-app.app"
  },
  "env": {
    // dev environment configuration
    "dev": {
      "name": "test-app-dev",
      "services": [
        {
          "binding": "FOO_API",
          "service": "foo-api-backend-dev" // dev service
        }
      ],
      "workers_dev": false,
      "preview_urls": false,
      "vars": {
        // dev domain
        "VITE_API_BASE_URL": "https://dev.test-app.app"
      }
    }
  }
}

{
  "$schema": "node_modules/wrangler/config-schema.json",
  "name": "test-app",
  "compatibility_date": "2025-11-21",
  "compatibility_flags": ["nodejs_compat"],
  "main": "@tanstack/react-start/server-entry",
  "workers_dev": false,
  "preview_urls": false,
  "services": [
    {
      "binding": "FOO_API",
      "service": "foo-api-backend" // prod service
    }
  ],
  "vars": {
    // prod domain
    "VITE_API_BASE_URL": "https://test-app.app"
  },
  "env": {
    // dev environment configuration
    "dev": {
      "name": "test-app-dev",
      "services": [
        {
          "binding": "FOO_API",
          "service": "foo-api-backend-dev" // dev service
        }
      ],
      "workers_dev": false,
      "preview_urls": false,
      "vars": {
        // dev domain
        "VITE_API_BASE_URL": "https://dev.test-app.app"
      }
    }
  }
}

Is there a way to use Wrangler environments with Tanstack Start, or should I avoid using environments with Tanstack Start for now?

Tanstack Start overwrites Wrangler Environments

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