How can I lazily-load ES6 modules? By lazy, I mean I don't want to actually load modules that aren't needed. For example, here's something I can do with RequireJS:

function someEventHandler() {

    var SomeModule = require('some-module'),

        module = new SomeModule();

    // ...

}

Something along the same lines doesn't appear to be possible using ES6 imports:

// Doesn't appear to be valid...

function someEventHandler() {

    import SomeModule from 'some-module';

    var module = new SomeModule();

    // ...

}

Are there any viable techniques to only pull in dependencies when needed, using ES6 modules? Or is the only path to trace the full dependency graph and fetch everything up-front?