When trying to build js-libs locally I have discovered that some jsmodules directories do not exist in the default tree.
Maven fails with:
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-antrun-plugin:1.8:run (default) on project handlebars: An Ant BuildException has occured: /home/tyler/source/github/codevalet/build/repos/js-libs-plugin/handlebars/src/main/webapp/jsmodules does not exist.
[ERROR] around Ant part ...<copy todir="/home/tyler/source/github/codevalet/build/repos/js-libs-plugin/handlebars/target/assets-wrapper/assets/handlebars/jsmodules">... @ 6:141 in /home/tyler/source/github/codevalet/build/repos/js-libs-plugin/handlebars/target/antrun/build-main.xml
[ERROR] -> [Help 1]
If I create handlebars/src/main/webapp/jsmodules then the build progresses and fails on the next maven module, complaining that <module>/src/main/webapp/jsmodules does not exist.
As a temporary hack, I've created */src/main/webapp/jsmodules in my local working copy, which allows the build to complete successfully.