Svelte Language Server keeps running out of memory and ignoring excludes

[h4chi]

Describe the bug

For some reason the Svelte Language server isn't ignoring the node_modules folder. Memory keeps balooning to upwards of 4-5GB and then crashes with an OOM error.
I increased the memory size to using "svelte.language-server.runtime-args": ["--max-old-space-size=5120"], but it maxes that limit as well.

SnapshotManager File Statistics:
Project files: 371
Svelte files: 237
From node_modules: 0
Total: 371
SnapshotManager File Statistics:
Project files: 371
Svelte files: 237
From node_modules: 7933
Total: 8307

<--- Last few GCs --->

[5963:0x1a01b000]    96372 ms: Scavenge (interleaved) 2039.4 (2085.2) -> 2035.8 (2093.4) MB, pooled: 0 MB, 5.29 / 0.00 ms  (average mu = 0.116, current mu = 0.004) allocation failure; 
[5963:0x1a01b000]    97852 ms: Mark-Compact (reduce) 2041.5 (2093.7) -> 2040.3 (2083.2) MB, pooled: 0 MB, 1153.26 / 0.00 ms  (+ 220.3 ms in 0 steps since start of marking, biggest step 0.0 ms, walltime since start of marking 1392 ms) (average mu = 0.117, 

<--- JS stacktrace --->

FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory
----- Native stack trace -----

 1: 0xe1803a node::OOMErrorHandler(char const*, v8::OOMDetails const&) [/home/h4ch1/.vscode-server/cli/servers/Stable-7d842fb85a0275a4a8e4d7e040d2625abbf7f084/server/node]
 2: 0x11ec9c0 v8::Utils::ReportOOMFailure(v8::internal::Isolate*, char const*, v8::OOMDetails const&) [/home/h4ch1/.vscode-server/cli/servers/Stable-7d842fb85a0275a4a8e4d7e040d2625abbf7f084/server/node]
 3: 0x11ecc97 v8::internal::V8::FatalProcessOutOfMemory(v8::internal::Isolate*, char const*, v8::OOMDetails const&) [/home/h4ch1/.vscode-server/cli/servers/Stable-7d842fb85a0275a4a8e4d7e040d2625abbf7f084/server/node]
 4: 0x141a575  [/home/h4ch1/.vscode-server/cli/servers/Stable-7d842fb85a0275a4a8e4d7e040d2625abbf7f084/server/node]
 5: 0x141a5a3  [/home/h4ch1/.vscode-server/cli/servers/Stable-7d842fb85a0275a4a8e4d7e040d2625abbf7f084/server/node]
 6: 0x143367a  [/home/h4ch1/.vscode-server/cli/servers/Stable-7d842fb85a0275a4a8e4d7e040d2625abbf7f084/server/node]
 7: 0x1436848  [/home/h4ch1/.vscode-server/cli/servers/Stable-7d842fb85a0275a4a8e4d7e040d2625abbf7f084/server/node]
 8: 0x1c9c351  [/home/h4ch1/.vscode-server/cli/servers/Stable-7d842fb85a0275a4a8e4d7e040d2625abbf7f084/server/node]
[Error - 12:42:57 am] Server process exited with signal SIGABRT.
[Info  - 12:42:57 am] Connection to server got closed. Server will restart.

Reproduction

Run latest vscode and Svelte for VSCode extension in a Svelte project.

Expected behaviour

From node_modules should be 0 and memory usage shouldn't keep increasing.

System Info

• OS: Mac OS Sequoia
• IDE: vscode

Which package is the issue about?

Svelte for VS Code extension

Additional Information, eg. Screenshots

No response

[jasonlyu123]

exclude only excludes files that also match the includes pattern. And it won't exclude files being loaded. It excludes them from the entry points, as indicated in the "project files" section of the log. As long as an import references a file in the node_modules, TypeScript will still load the file.

Zod is a common cause of out-of-memory. If you're using it, please try updating to the latest version or searching for issues on their GitHub repo. Otherwise, please provide a reproduction repository. There isn't much we can do without it.

[h4chi]

Oh that's interesting, I didn't know Zod could cause OOM.
Just removed it and its' instances and replaced them with valibot (I was in the process of migrating anyway) and now memory usage by the Svelte extension is at a constant 1GB.

Thank you!