how can i use optionalChaining?

[werfun]

let b = a?.b?.c?.s

[jackkoppa]

For JavaScript: the Babel plugin

For TypeScript: Soon! November 5th!

The issue
TS 3.7, target release of 11/5/19

Also, this can probably be closed as an issue not particularly specific to Vetur

[werfun]

I've used the Babel plugin, but the vscode shows the Expression expected.Vetur(1109). How to configure vetur ?

[oliyg]

TS 3.7, target release of 11/5/19

Vetur is based on vue-language-server. the vue-language-server is current loading bundled typescript@3.6.3.

so you have to wait for the vue-language-server to upgrade this version to 3.7

[octref]

As answered by others, you'll need to wait TS 3.7. After which you can install locally to your workspace and use vetur.useWorkspaceDependencies to use it.

[abercrave]

https://devblogs.microsoft.com/typescript/announcing-typescript-3-7/ 🙂

[Nayacco]

It's time.

[jrt324]

@octref Please reopen this issue ,

As answered by others, you'll need to wait TS 3.7. After which you can install locally to your workspace and use vetur.useWorkspaceDependencies to use it.

This answer not working !

[octref]

TS 3.7 might break other functionalities of Vetur, so I can't just upgrade.
You can now use vetur.useWorkspaceDependencies with locally installed TS. The point of that setting is you don't have to wait for Vetur to update its TS dependencies for using a newer version.

[jackkoppa]

Yup, can confirm that useWorkspaceDependencies is working great for us for optional chaining, having TS 3.7 installed for the repo 👍 Love it!

[Flexicon]

Is it intended not to work within template tags? Or does typescript only work within script tags?

[Niekvdm]

Using TypeScript 3.7 breaks intellisense for me.