Automatic imports don't work for packages that provide their own types

[robbiespeed]

• VSCode Version: 1.41.0
• OS Version: Fedora 30

Steps to Reproduce:

1. Add a module dependency which includes it's own types
2. Start writing out a named export of the added module
3. No suggestion will be given

Suggestions won't show until you've actually imported the dependency.
This is different from how @types modules work, which will show in suggestions without any prior use.

I've created an example project

1. yarn install
2. open src/main.ts
3. type use and you will get suggestions for React useCallback, etc.
4. type watch and you will get no suggestion for Kappi watch

Does this issue occur when all extensions are disabled?: Yes

[SantoJambit]

Same issue here. Ubuntu 18.04

Suggestions start appearing once you manually imported at least one type from the module in your file.

[SantoJambit]

I've tried downgrading vscode to 1.37 and typescript to 3.3.4000. The issue remains. I even tried disabling all extensions and resetting all settings to their defaults without success.

I'm pretty sure, that it worked correctly with the above versions, so I'm not sure where this issue is coming from.

[DanielRosenwasser]

Very surprised we didn't find out about this sooner.

[andrewbranch]

This is working as intended and/or duplicate of #29629, #30033, and #30474.

Suggestions start appearing once you manually imported at least one type from the module in your file.

Not just in the same file, but anywhere in the project. See Ryan’s explanation here: #30033 (comment)