[Hawkular-dev] Building hawkular failed

Hi guys, I was trying to build the latest repo on master. It complained that ``` [ERROR] import yargs from ‘yargs'; [ERROR] ^^^^^^ [ERROR] [ERROR] SyntaxError: Unexpected reserved word [ERROR] at exports.runInThisContext (vm.js:53:16) [ERROR] at Module._compile (module.js:414:25) [ERROR] at Object.Module._extensions..js (module.js:442:10) [ERROR] at Module.load (module.js:356:32) [ERROR] at Function.Module._load (module.js:311:12) [ERROR] at Module.require (module.js:366:17) [ERROR] at require (module.js:385:17) [ERROR] at Liftoff.handleArguments (/Users/akuo/Developer/hawkular/hawkular/console/target/gulp-build/node_modules/gulp/bin/gulp.js:116:3) [ERROR] at Liftoff.<anonymous> (/Users/akuo/Developer/hawkular/hawkular/console/target/gulp-build/node_modules/gulp/node_modules/liftoff/index.js:192:16) [ERROR] at module.exports (/Users/akuo/Developer/hawkular/hawkular/console/target/gulp-build/node_modules/gulp/node_modules/liftoff/node_modules/flagged-respawn/index.js:17:3) ``` … [ERROR] Failed to execute goal com.github.eirslett:frontend-maven-plugin:0.0.26:gulp (gulp build) on project hawkular-console: Failed to run task: ‘gulp.js build --production --no-color' failed. (error code 1) -> [Help 1] Anyone knows how to fix this? Thanks