Code snippet for function call not available for aliased functions.

[chemzqm]

• VSCode Version: 1.25.0
• OS Version: MacOS

Steps to Reproduce:

1. Add "typescript.useCodeSnippetsOnMethodSuggest": true, to settings file to enable code snippet for method suggest.
2. Create a.ts with

   export function func(str:string):void {
       // noop
   }

3. Create b.ts with

   import {func} from './a'

   and then type func and select func item, the completion is done, but no code snipet would b used.

The reason is because typescript server would return alias for the import variable but not function, so typescript-language-features extension would not consider it as function and no code snippet is generated.

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

[yogeshmangaj]

@mjbvz I'd like to help, is there any more information that I could use to debug and fix this?

[chemzqm]

@yogeshmangaj here is the check for use code snippet
https://github.com/Microsoft/vscode/blob/74880d68369e10577bb3fc0786ab211d7aa372e7/extensions/typescript-language-features/src/features/completions.ts#L56
and here is the function to generate the snippet.
https://github.com/Microsoft/vscode/blob/74880d68369e10577bb3fc0786ab211d7aa372e7/extensions/typescript-language-features/src/features/completions.ts#L543

[yogeshmangaj]

@chemzqm I am not sure if I'm missing something, and this may be unrelated to the issue you have mentioned, but code snippet for a function does not show from within the same file either.

1. Create a.ts with

export function func(str:string):string {
    return "hello world";
}

2. On the next line in a.ts type func, the code snippet is same as what it shows for the alias function visible in your screenshot.

[chemzqm]

@yogeshmangaj I'm able to complete that, you should enable code snippet in your VSCode settings

    "typescript.useCodeSnippetsOnMethodSuggest": true,

[yogeshmangaj]

@chemzqm I have that setting enabled, and I still get the same thing, is there any other setting that has to be enabled? Could you please post a screenshot of the snippet that you're seeing (hope this is not bothersome)?

Thanks!

[chemzqm]

@yogeshmangaj other setting should be unrelated.
I think you don't have snippet is because your tsserver is old, it should be 2.9.2 or later.

[yogeshmangaj]

@chemzqm that does not seem to be the case either, tsserver is 2.9.2

[chemzqm]

On the next line in a.ts type func, the code snippet is same as what it shows for the alias function visible in your screenshot.

It's not the same, there not alias, you should be able to get the snippet by confirm the selection.

[mjbvz]

Closing this in favor of microsoft/TypeScript#25207

We are limited in what we can do generating snippets on the VS Code side and really need TS support for more advanced support like this