Another version of escope

[vincentdchan]

Hi, I am writing a plugin for webpack to do deep socpe analysis. I modified escope and wrapped it into Typescript. just see src/

There are several difference:

• TypeScript
• scopes are split into several files
• ImportManager and ExportManager are added to ModuleScope for tree shaking in webpack
• export default function () { ... } will not be regarded as scope in escope, but my plugin will analyze it

As an open source project I try to submit PR to escope and use escope directly. There is no need to make a new lib. So I just want to ask will escope accept these changes. If it's OK, I will submit a PR.

[brettz9]

By "scopes are split into several files", do you mean it builds a structure which can represent a whole application? That sounds very good to me.