Describe the bug
The submit() function returned by form.enhance() never throws/rejects when invalid is used. This makes try/catch unusable for error handling. submit() always resolves.
Reproduction
https://stackblitz.com/edit/sveltejs-kit-template-default-mjwi8p4r?file=src%2Froutes%2F%2Bpage.svelte
Logs
System Info
System:
OS: macOS 15.6.1
CPU: (10) arm64 Apple M1 Pro
Memory: 74.75 MB / 16.00 GB
Shell: 5.9 - /bin/zsh
Binaries:
Node: 24.11.1 - /Users/batuhandemir/.nvm/versions/node/v24.11.1/bin/node
npm: 11.6.2 - /Users/batuhandemir/.nvm/versions/node/v24.11.1/bin/npm
pnpm: 10.24.0 - /Users/batuhandemir/Library/pnpm/pnpm
bun: 1.1.29 - /Users/batuhandemir/.bun/bin/bun
Browsers:
Brave Browser: 143.1.85.118
Chrome: 143.0.7499.170
Firefox: 144.0.2
Safari: 18.6
npmPackages:
@sveltejs/adapter-node: ^5.4.0 => 5.4.0
@sveltejs/kit: ^2.49.4 => 2.49.4
@sveltejs/vite-plugin-svelte: ^6.2.4 => 6.2.4
svelte: ^5.46.1 => 5.46.1
vite: ^7.3.1 => 7.3.1Severity
annoyance
Additional Information
No response
Describe the bug
The submit() function returned by form.enhance() never throws/rejects when invalid is used. This makes try/catch unusable for error handling. submit() always resolves.
Reproduction
https://stackblitz.com/edit/sveltejs-kit-template-default-mjwi8p4r?file=src%2Froutes%2F%2Bpage.svelte
Logs
System Info
System: OS: macOS 15.6.1 CPU: (10) arm64 Apple M1 Pro Memory: 74.75 MB / 16.00 GB Shell: 5.9 - /bin/zsh Binaries: Node: 24.11.1 - /Users/batuhandemir/.nvm/versions/node/v24.11.1/bin/node npm: 11.6.2 - /Users/batuhandemir/.nvm/versions/node/v24.11.1/bin/npm pnpm: 10.24.0 - /Users/batuhandemir/Library/pnpm/pnpm bun: 1.1.29 - /Users/batuhandemir/.bun/bin/bun Browsers: Brave Browser: 143.1.85.118 Chrome: 143.0.7499.170 Firefox: 144.0.2 Safari: 18.6 npmPackages: @sveltejs/adapter-node: ^5.4.0 => 5.4.0 @sveltejs/kit: ^2.49.4 => 2.49.4 @sveltejs/vite-plugin-svelte: ^6.2.4 => 6.2.4 svelte: ^5.46.1 => 5.46.1 vite: ^7.3.1 => 7.3.1Severity
annoyance
Additional Information
No response