VS Code Intellisense seems to wrongly infer revealing module pattern

_From @lodybo on September 12, 2017 9:44_ <!-- Do you have a question? Please ask it on http://stackoverflow.com/questions/tagged/vscode. --> <!-- Use Help > Report Issues to prefill these. --> - VSCode Version: 1.16.0 - OS Version: Windows 10 Steps to Reproduce: 1. Copy the code below into a file called `greeter.js` 2. Run `node greeter.js` in a terminal ```javascript var Greeter = (function(country) { // Private this.country = country; function getCountry() { return country; } // Public var performGreeting = function (name) { var country = getCountry(); return 'Hello ' + name + ', from ' + country; } return { greet: performGreeting } }); var greeter = new Greeter("The Netherlands"); console.log(greeter.greet("Lody")); console.log(greeter.country); ``` Using the revelealing module pattern in VS Code seems to trip up Intellisense into suggesting the wrong members. The code above was tested in multiple browsers and consoles and run with Node v6.3.0 which behaved as expected. They ran the `greet()` function and returned `undefined` for `greeter.country`: ```bash λ node greeter.js Hello Lody, from The Netherlands undefined ``` But VS Code's Intellisense reports that `greeter` only contains `country`:  It also reports the expected interface of `greeter` for the class itself (`Greeter`):  What is expected is VS Code correctly inferring `greeter.greet` to be a function of `Greeter`, with a parameter `name`. This was reproduced in a clean folder of VS Code, with no extensions (launched with `code --disable-extensions`), and no `jsconfig.json`. _Copied from original issue: Microsoft/vscode#34214_