lib/builder-browserify.js
function registerable (cfgObj) {
    _.forIn(cfgObj, function (value, key) {
      if (registerableCfg.indexOf(key) !== -1) {
        register(key, cfgObj)
      }
    })
  }
function registerable (cfgObj) {
    _.forIn(cfgObj, function (value, key) {
      if (registerableCfg.indexOf(key) !== -1) {
        register(key, cfgObj)
      }
    })
  }
function registerable ( cfgObj ) { _ . forIn ( cfgObj , function ( value , key ) { if ( registerableCfg . indexOf ( key ) !== - 1 ) { register ( key , cfgObj ) } } ) }
grab registerable configs and register them
grab registerable configs and register them