Autocomplete for external libs doesn't work

[mikeys]

Using Vim with YCM installed:

• Create a new directory:
  mkdir cheerio & cd cheerio
• Install the cheerio package: npm install cheerio (this creates a node_modules directory)
• Create a .tern-project file and add the node plugin inside:

{
  "plugins": {
    "node": { }
  }
}

• Edit a new file in vim (index.js for example) and start typing:
  

Only the basic Object functions appear in the autocomplete menu.

• Node modules seem to work just fine:

Am I missing something? Is there anything else that I should do in order for enabling external libraries autocomplete ?

[artemave]

I am seeing this too. With cheerio. But other modules seem fine. I guess this may have something to do with how cheerio defines methods or something.

[mikeys]

@artemave Well, I've tried express and koa packages as well:

express = require('express');
app = express();

app.

The above only shows my request and response objects...

[mikeys]

just checked with lodash package, seems to work fine...

I guess you're right, probably the way the module defines methods.

@marijnh any chance you can confirm this?

[marijnh]

Tern's type inference isn't infallible, it will fail to infer some types, especially when they are created with strange patterns.

[ehzawad]

same issue with me

[nagakiran]

Am also facing the same issue with "cheerio" package.

[christopherball]

I landed here due to the exact same scenario as @mikeys with express and app.

[omartin]

Same, is it fixable somehow ? The issue has been opened for two years I'm curious is there is a workaround.

[othree]

I think this issue should belong to tern itself. https://github.com/ternjs/tern/
And for now, I don't plan to do large change to deal with strange patterns.
So the best way is to write a plugin for the library you use.