Name clash with global types

[kevinresol]

Promise != cast js.lib.Promise; // should be false, but got true

// name clash with js.lib.Promise
class Promise {}

ref:

• https://nodejs.org/api/globals.html
• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects

[benmerckx]

$global.GlobalType should not be used in type definitions. Not sure how to fix the issue there

[kevinresol]

Perhaps we should just prefix the type with $ when it is using a globally reserved name

[kevinresol]

or we can use a prefixed name internally, this seems to work:

// main.ts
import {Promise as Promise__1} from './mypromise'

var customPromise = new Promise__1();
var globalPromise = new Promise<number>(null);

Promise__1.foo(globalPromise);

// mypromise.ts
class $Promise {
    static foo(input:Promise<number>) {}
}

export const Promise = $Promise