IFFE module target

[TheToolbox]

Would anyone be interested in a PR for bundling ES6 modules into single IFFE-scoped files? (a la rollup.js) This would allow bundling for those who don't wish to rely on AMD/System, and remove at least one build step in many scenarios.

(Apologies if duplicate. Search/FAQ didn't come up with anything. If additional details are desired, I can put those together as well)

Example below (modified from rollupjs's website):

//main.ts (source)
import * as x from './maths';
var z : number = 3;
console.log( x.cube( 5 ) + z ); 

//maths.ts (source)
//variable namespacing could be accomplished by appending, as seen here, or via internal IFFEs
var z : number = 0;

export function square ( x : number ): number {
    return x * x + z;
}

//unreferenced functions intelligently culled
export function cube ( x : number ): number {
    return x * x * x + z;
}

//main.js (outFile)
(function () {
    'use strict';

    //variable namespacing could be accomplished by appending, as seen here, or via internal IFFEs
    var z$1 = 0;

    //unreferenced functions intelligently culled
    function cube ( x ) {
        return x * x * x + z$1;
    }

    var z = 3;
    console.log( cube( 5 ) + z );

}());

[mhegazy]

looks like a duplicate of #4434

[TheToolbox]

Thanks, closing.

[dpogue]

See also #6319 which would allow you to use rollup to generate your final bundle.