{
    "browser":
        {
            "log4javascript": "../../../../../../../target/webjars/log4javascript/1.4.10/log4javascript.js"
        }
}

{
    "browser":
        {
            "log4javascript": "app/target/webjars/log4javascript/1.4.10/log4javascript.js"
        }
}

aliasMappings: [{
  cwd: 'src',
  dest: 'myApp',
  src: ['**/*.js']
}]

require("myApp/target/webjars/log4javascript/1.4.10/log4javascript.js")