Build fails when used with hard-source-webpack-plugin

Not sure if this is an issue with aurelia-webpack-plugin or hard-source-webpack-plugin. Builds successfully after removing AureliaWebpackPlugin from the config. Also opened an [issue](https://github.com/mzgoddard/hard-source-webpack-plugin/issues/266) on hard source's repo.

**I'm submitting a bug report**

* **Library Version:**
2.0.0-rc.5

* **Operating System:**
Windows 10

* **Node Version:**
9.4.0

* **NPM Version:**
5.6.0

* **Webpack Version**
Webpack 3.10.0

**Current behavior:**
When building project using webpack and hard-source-webpack-plugin, build fails with following error.

Unhandled rejection TypeError: Cannot read property 'has' of undefined
at importedNames.importedModule.providedExports.filter.id (C:\webpack-test\app\scheduling\node_modules\webpack\lib\dependencies\HarmonyExportImportedSpecifierDependency.js:78:28)
at Array.filter ()
at HardHarmonyExportImportedSpecifierDependency.getReference (C:\webpack-test\app\scheduling\node_modules\webpack\lib\dependencies\HarmonyExportImportedSpecifierDependency.js:76:51)
at processDependency (C:\webpack-test\app\scheduling\node_modules\webpack\lib\FlagDependencyUsagePlugin.js:52:48)
at depBlock.dependencies.forEach.dep (C:\webpack-test\app\scheduling\node_modules\webpack\lib\FlagDependencyUsagePlugin.js:46:43)
at Array.forEach ()
at processDependenciesBlock (C:\webpack-test\app\scheduling\node_modules\webpack\lib\FlagDependencyUsagePlugin.js:46:28)
at Compilation.compilation.plugin.modules (C:\webpack-test\app\scheduling\node_modules\webpack\lib\FlagDependencyUsagePlugin.js:23:6)
at Compilation.applyPluginsBailResult1 (C:\webpack-test\app\scheduling\node_modules\tapable\lib\Tapable.js:140:27)
at Compilation.seal (C:\webpack-test\app\scheduling\node_modules\webpack\lib\Compilation.js:597:9)
at applyPluginsParallel.err (C:\webpack-test\app\scheduling\node_modules\webpack\lib\Compiler.js:504:17)
at C:\webpack-test\app\scheduling\node_modules\tapable\lib\Tapable.js:289:11
at C:\webpack-test\app\scheduling\node_modules\html-webpack-plugin\index.js:60:9
at tryCatcher (C:\webpack-test\app\scheduling\node_modules\bluebird\js\release\util.js:16:23)
at Promise._settlePromiseFromHandler (C:\webpack-test\app\scheduling\node_modules\bluebird\js\release\promise.js:512:31)
at Promise._settlePromise (C:\webpack-test\app\scheduling\node_modules\bluebird\js\release\promise.js:569:18)
at Promise._settlePromise0 (C:\webpack-test\app\scheduling\node_modules\bluebird\js\release\promise.js:614:10)
at Promise._settlePromises (C:\webpack-test\app\scheduling\node_modules\bluebird\js\release\promise.js:693:18)
at Async._drainQueue (C:\webpack-test\app\scheduling\node_modules\bluebird\js\release\async.js:133:16)
at Async._drainQueues (C:\webpack-test\app\scheduling\node_modules\bluebird\js\release\async.js:143:10)
at Immediate.Async.drainQueues [as _onImmediate] (C:\webpack-test\app\scheduling\node_modules\bluebird\js\release\async.js:17:14)
at runCallback (timers.js:756:18)
at tryOnImmediate (timers.js:717:5)
at processImmediate [as _immediateCallback] (timers.js:697:5)

**Expected/desired behavior:**
Webpack successfully completes build