vue-language-server fails to start if initializationOptions is undefined

[louisbourque]

• I have searched through existing issues
• I have read through docs
• I have read FAQ

Info

• Platform: Linux
• Vetur version: [email protected]
• SublimeText version: 3.2.1
• LSP version: 0.8.2

Problem

When using SublimeText with the LSP plugin, with vue-language-server, I get the following error in the SublimeText console:

LSP: Request initialize failed with message: Cannot read property 'config' of undefined

Reproducible Case

I've traced the error back to this line:

vetur/server/src/services/vls.ts

Line 93 in 5f33524

_.get(params.initializationOptions.config, ['vetur', 'useWorkspaceDependencies'], false)

If params.initializationOptions is undefined, a TypeError occurs, preventing the init function from continuing. This line was added in a recent commit here: 7f49878

In that same file, there is a check to ensure params.initializationOptions exists before attempting to access config:

if (params.initializationOptions && params.initializationOptions.config) {
      this.configure(params.initializationOptions.config);
}

If possible, I would like to submit a Pull Request for this, which would consist of this commit:
https://github.com/louisbourque/vetur/commit/3cc0b83827dda78ad2775e8688e6efd45b1d9318

[sgehrman]

I'm also on Linux/Vetur. Says Language Server Crashed. I just updated to the new VSCode, I assume that triggered it.

[octref]

The change looks good. Wanna send a PR?