Make Javascript intellisense detect inheritance

[mjbvz]

From @benjaminmillhouse on December 21, 2016 17:33

• VSCode Version: Code 1.8.0 (38746938a4ab94f2f57d9e1309c51fd6fb37553d, 2016-12-13T17:38:28.425Z)
• OS Version: Darwin x64 16.3.0
• Extensions:

Extension	Author	Version
JSDocTagComplete	HookyQR	0.0.2
html-css-class-completion	Zignd	1.0.3
theme-atom-one-dark	andischerer	0.0.1
vscode-eslint	dbaeumer	1.1.0
docthis	joelday	0.3.5
Angular1	johnpapa	0.1.16
Angular2	johnpapa	1.0.2
csharp	ms-vscode	1.5.3
js-atom-grammar	ms-vscode	0.1.10
vscode-icons	robertohuertasm	4.0.2
bootstrap-3-snippets	wcwhitehead	0.0.8

---

Hello,
I would love it if VS Code's Javascript intellisense was able to detect inheritance. Please let me know if there is a way to accomplish this today through jsdoc comments or anything like that. I have tried all kinds of different ways to get VS Code to detect it (definitions like below, @Augments, @extends jsdoc comments, etc) and have not gotten anything to work.

As an example, when inheriting like this:
function BaseClass() {
  this.foo = 'bar';
}
BaseClass.prototype.baz = function () { }

function InheritedClass() {
  BaseClass.call(this);
}
InheritedClass.prototype = Object.create(BaseClass.prototype);
InheritedClass.prototype.constructor = InheritedClass;

Would like the intellisense for new InheritedClass(). to show 'foo' and 'baz' as properties/methods for InheritedClass in Intellisense.

Copied from original issue: microsoft/vscode#17690

[mhegazy]

#12441 adds support for @augments for ES6 classes, but not for functions. we should add this as well.