npm install doesn't work in Eclipse (M2Eclipse)

[Odi55555]

I have a working configuration of the plugin with
create-resources
npm and
grunt which works fine in maven CLI.

When I try to run this in Eclipse Luna 4.4.1 with M2Eclipse 1.6 the npm task prevents mvn clean install from finish. It stops after npm install and never executes the next tasks. After pressing ENTER the execution resumes and the build succeeds.

I tried npm-offline, but the problem is the same. Unfortunately there's no error, even when I run mvn clean install -X. If the node_modules folder doesn't exists, the console on Eclipse shows how the required packages are downloaded and installed, but the task never terminates without pressing ENTER.

Any ideas how this could be solved?

[adamdubiel]

I haven't used Eclipse for few years now, as far as i remember integration with maven was always a bit problematic - i won't be much help here, but maybe someone else had this issue?