js intellisense issues about the custom export module.

[tsanie]

Environments:

• VSCode Version: 1.13.0
• OS Version: Win 10 Pro, 1703 (Build 15063.332)

Extensions:

• Beautify 1.1.1
• C/C++ 0.11.4
• C# 1.10.0
• ESLint 1.2.11
• vetur 0.7.0
• vscode-icons 7.9.0
• webpack 2.0.0
• XML Tools 1.8.0

Issues:

The intellisense doesn't work when I import a constructor, but after I change the module.exports to an object, it seems right.

Steps to Reproduce:

1. Create a file named 'mod.js', write these lines.

function Test(name) {
  this.name = name;
}
Test.prototype.log = function (msg) {};
module.exports = Test;

2. Create another file named 'test.js'.

const Test = require('./mod');
let a = new Test('test');
a.    // <- here, the intellisense cannot list the 'name' and 'log'

3. Then change the files.

'mod.js'

-module.exports = Test;
+module.exports = { Test };

'test.js'

-let a = new Test('test');
+let a = new Test.Test('test');
a.    // now the intellisense seems good.

Screen record

[mjbvz]

This issue was moved to microsoft/TypeScript#16467