Babel autocomplete for export list.

[jonyeezs]

Description

Currently export autocomplete supports node_modules pkgs and project based files (ie relative files).

Users of .babelrc module resolvers won't work for the autocompleting the export list.

Steps to Reproduce

Expected behavior:

1. include a .babelrc file. Example below

{
"plugins": [
  ["module-resolver", {
    "root": ["./src"],
    "alias": {
      "test": "./test",
      "underscore": "lodash"
    }
  }]
	]
 }

2. Enable .babelrc option in the package's menu
3. import a file using the aliases noted in your babelrc
4. the export list should have autocomplete for files in that folder