VisualStudio Code shows errors in new project

[xcambar]

Version

3.0.0-beta.6

Reproduction link

https://github.com/xcambar/vue-cli-lint-error-typescript

Steps to reproduce

• vue create name-of-your-project
• Select only the "TypeScript" option
• open HelloWorld.vue in VSCode

What is expected?

The linter service and VSCode should provide the same amount of feedback to the user.

What is actually happening?

The linter service does not throw any error, but VSCode does.

---

I'm new to vue-cli, and despite my Google-fu, I may have missed something.

[yibuyisheng]

#1198 ?

[xcambar]

Unfortunately no (or I don't understand the solution): the example repo already contains the declarations as 2 separated files shims-tsx.d.ts and shims-vue.d.ts

[kumorig]

I can confirm this issue, and I'm pretty sure it has to do with the typescript version. The vetur-extension in vscode installs with devDependencies:{"typescript": "^2.6.2"} (looking at %USERPROFILE%\.vscode\extensions\octref.vetur-0.11.7\package.json ) but https://github.com/vuejs/vetur/blob/master/package.json has "typescript": "^2.8.1", but vetur@0.11.7 is the same version so whats up with that?

Anyway, definite assignment assertions (the exclamation marks after variables), where your code breaks the linter, were introduced in typescript v2.7

[kumorig]

Workaround here: vuejs/vetur#682

[xcambar]

I confirm the fix described in vuejs/vetur#682 (comment) works, thanks @kumorig !

It will do before Vetur 0.11.8 is published 👍