When running Eclipse Kepler and importing an existing Maven project, Eclipse hangs during \"Building Workspace (XX%)\". Switching to the Progress tab reveals a \"Validating
Kill Eclipse process.
Go to project folder and edit .project file.
Remove the following lines (it will disable failing JavaScript validator):
<buildCommand>
<name>org.eclipse.wst.jsdt.core.javascriptValidator</name>
<arguments>
</arguments>
</buildCommand>
Save file.
Re-open Eclipse.
I faced the same problem when I tried to install Angular.js with bower in my project. I seems bower has lots of javascript files it downloaded automatically which caused my IDE to stuck in validation process for a long time. So, I solved this problem this way,
My IDE currently working without freezing. I took help from there. Tern I guess it can be helpful, where any IDE stuck due to lots of Javascript file.