Describe the bug
I've gotten this invariant_violation error in a bigger Project, but this is the smallest reproduction i was able to create.
The error gets thrown when:
- A page queries and
awaits data using a remote query
- A remote
form gets submitted (not a single-flight mutation)
- In the
enhance function of the form a $state gets set after await submit() has run
If any of the above are not true the error doesn't occur (e.g. the form invalidates the query, the state gets set before the submit function runs)
Reproduction
https://github.com/felixf2k/bug-invariant-violation
Logs
Uncaught Svelte error: invariant_violation
An invariant violation occurred, meaning Svelte's internal assumptions were flawed. This is a bug in Svelte, not your app — please open an issue at https://github.com/sveltejs/svelte, citing the following message: "Batch has scheduled roots"
https://svelte.dev/e/invariant_violation
at invariant_violation (runtime-daVIWO85.js?v=3d3391a3:191:33)
at invariant (runtime-daVIWO85.js?v=3d3391a3:934:18)
at #commit (runtime-daVIWO85.js?v=3d3391a3:2000:5)
at #process (runtime-daVIWO85.js?v=3d3391a3:1886:58)
at Batch.flush (runtime-daVIWO85.js?v=3d3391a3:1958:17)
at Array.<anonymous> (runtime-daVIWO85.js?v=3d3391a3:2063:9)
at run_all (runtime-daVIWO85.js?v=3d3391a3:39:45)
at run_micro_tasks (runtime-daVIWO85.js?v=3d3391a3:1139:2)
at runtime-daVIWO85.js?v=3d3391a3:1148:31System Info
System:
OS: Linux 6.18 cpe:/o:nixos:nixos:26.05 26.05 (Yarara)
CPU: (12) x64 12th Gen Intel(R) Core(TM) i7-1255U
Memory: 11.33 GB / 31.04 GB
Container: Yes
Shell: 5.3.9 - /run/current-system/sw/bin/bash
Binaries:
Node: 24.14.0 - /etc/profiles/per-user/felix/bin/node
npm: 11.9.0 - /etc/profiles/per-user/felix/bin/npm
pnpm: 10.33.0 - /etc/profiles/per-user/felix/bin/pnpm
Browsers:
Chromium: 146.0.7680.177
Firefox: 149.0
Firefox Developer Edition: 149.0
npmPackages:
svelte: ^5.55.2 => 5.55.4Severity
annoyance
Describe the bug
I've gotten this
invariant_violationerror in a bigger Project, but this is the smallest reproduction i was able to create.The error gets thrown when:
awaits data using a remote queryformgets submitted (not a single-flight mutation)enhancefunction of the form a$stategets set afterawait submit()has runIf any of the above are not true the error doesn't occur (e.g. the form invalidates the query, the state gets set before the submit function runs)
Reproduction
https://github.com/felixf2k/bug-invariant-violation
Logs
System Info
System: OS: Linux 6.18 cpe:/o:nixos:nixos:26.05 26.05 (Yarara) CPU: (12) x64 12th Gen Intel(R) Core(TM) i7-1255U Memory: 11.33 GB / 31.04 GB Container: Yes Shell: 5.3.9 - /run/current-system/sw/bin/bash Binaries: Node: 24.14.0 - /etc/profiles/per-user/felix/bin/node npm: 11.9.0 - /etc/profiles/per-user/felix/bin/npm pnpm: 10.33.0 - /etc/profiles/per-user/felix/bin/pnpm Browsers: Chromium: 146.0.7680.177 Firefox: 149.0 Firefox Developer Edition: 149.0 npmPackages: svelte: ^5.55.2 => 5.55.4Severity
annoyance