Promise.all is not a function

I receive this error on Chrome 49.0.2623.87. I have es6-promise 3.2.1. I am packaging using webpack. Testing using the webpack development server. es6-promise is being included in webpack as a plugin:

plugins: [
    new webpack.ProvidePlugin({
        "Promise": "es6-promise",
        "fetch": "imports?this=>global!exports?global.fetch!whatwg-fetch"
    })
]

The call in my code (TypeScript) looks like:

            return Promise.all(<Promise<any>[]> [CartService.find(), CatalogService.find()]);

CartService.find() and CatalogService.find() both return Promises.

When my code runs I receive the error:

Uncaught (in promise) TypeError: Promise.all is not a function

Looking at the JS sent to the browser I can see that this library is included in the bundled code.

If I comment out the line in my webpack.config.js file then it runs fine (but there is obviously no polyfill).

What am I doing wrong?

[stefanpenner]

@Sinewyk any recommendations for improving this for this project?

[Sinewyk]

PR opened https://github.com/stefanpenner/es6-promise/pull/197