Can't use dynamic expressions in imports

[Roger]

• I have searched the issues of this repository and believe that this is not a duplicate.

Expected Behavior

Imports like, import(./widgets/${name}/index.js) work

Current Behavior

Cannot read property 'call' of undefined
TypeError: Cannot read property 'call' of undefined
    at __webpack_require__ (http://localhost:3242/_next/1499784830986/manifest.js:698:30)
    at fn (http://localhost:3242/_next/1499784830986/manifest.js:117:20)
    at SameLoopPromise.ssr [as cb] (http://localhost:3242/_next/1499784830986/page/metaspace:296:38)
    at SameLoopPromise.runIfNeeded (http://localhost:3242/_next/1499784830986/commons.js:53634:12)
    at SameLoopPromise.then (http://localhost:3242/_next/1499784830986/commons.js:53564:12)
    at DynamicComponent.loadComponent (http://localhost:3242/_next/1499784830986/commons.js:53416:17)
    at DynamicComponent.load (http://localhost:3242/_next/1499784830986/commons.js:53406:16)
    at DynamicComponent.componentDidMount (http://localhost:3242/_next/1499784830986/commons.js:53484:16)
    at http://localhost:3242/_next/1499784830986/commons.js:32667:25
    at measureLifeCyclePerf (http://localhost:3242/_next/1499784830986/commons.js:32478:12)

Steps to Reproduce (for bugs)

Use dynamic imports like this:

const loadModule = name => dynamic(import('./modules/' + name + '/index.js'))
...
const Component = loadModule('name');
() => <Component />

Context

Your Environment

Tech	Version
next	next@3.0.1-beta.13
node	v8.1.2
OS	linux
browser	chrome

[timneutkens]

Duplicate of #2514