Assets-only workers broken by assets validation #14018
Description
Describe the bug
The validation in #13844 broke assets-only workers, which do not specify binding = "ASSETS". If you include that, you get the error "[ERROR] Cannot use assets with a binding in an assets-only Worker." from wrangler. However, without a binding, you get "Error: You must specify the assets.binding key in /opt/buildhome/repo/wrangler.toml. Consult https://developers.cloudflare.com/workers/static-assets/binding/#binding"
Reproduction
Create a wrangler.toml including binding = "ASSETS" under [assets] but no main key.
Logs
System Info
System:
OS: macOS 15.5
CPU: (10) arm64 Apple M1 Max
Memory: 1.31 GB / 64.00 GB
Shell: 5.9 - /run/current-system/sw/bin/zsh
Binaries:
Node: 22.16.0 - /nix/store/abxz7wpw5kwaijzzmf8rl4ga981vk8pc-nodejs-22.16.0/bin/node
npm: 10.9.2 - /nix/store/abxz7wpw5kwaijzzmf8rl4ga981vk8pc-nodejs-22.16.0/bin/npm
pnpm: 9.15.0 - /nix/store/6ay4p54n66jj9npcn362djdhbb5cwi7a-corepack-nodejs-22.16.0/bin/pnpm
Browsers:
Chrome: 138.0.7204.158
Safari: 18.5
npmPackages:
@sveltejs/adapter-cloudflare: ^7.0.5 => 7.0.5
@sveltejs/enhanced-img: ^0.6.1 => 0.6.1
@sveltejs/kit: ^2.25.1 => 2.25.1
@sveltejs/vite-plugin-svelte: ^6.1.0 => 6.1.0
svelte: ^5.36.8 => 5.36.8
vite: ^7.0.5 => 7.0.5Severity
blocking an upgrade
Additional Information
No response