There is nothing on left. It is a maven project. Why?
You can go to Preferences -> Build, Execution, Deployment -> Build Tools -> Maven -> Importing and check the box that says Import Maven projects automatically . In Mac, you can do Command + Shift + A , then enter the action reimport , then click on Reimport all Maven projects .
In the Project tool window ( Alt+1 ), right-click the node in which you want to create a new file and click New | File. Alternatively, select the node, press Alt+Insert , and click File. Name the new file and specify its extension, for example: File. js, and press Enter .
I've had the same problem and narrowed it down to the following configuration that might have been messed up during the upgrade.
File (on Mac): ~/Library/Preferences/IntelliJIdea2018.1/options/projectView.xml
<application>
<component name="ProjectViewSharedSettings">
<option name="showLibraryContents" value="false" />
<option name="showMembers" value="true" />
</component>
</application>
Change/remove the showLibraryContents
entry. This setting is no longer available in the UI, "External Libraries" are always shown.
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