How to use

chain

function

in

lodash

/**
  * Check if roleAction matches routeAction
  *
  * @private
  *
  * @param roleAction Action of the current role loop
  * @param routeAction Action required by the route
  *
  * @return {boolean}
  */
 _matchActions (roleAction, routeAction) {
  const actionsKeys = chain(keys(routeAction)).concat(keys(roleAction)).uniq().value()

  for (const key of actionsKeys) {
   const roleActionValue = roleAction[key]
   const routeActionValue = routeAction[key] || '*'

   if (roleActionValue !== '*') {
    if (Array.isArray(roleActionValue)) {
     if (roleActionValue.indexOf(routeActionValue) === -1) return false
    } else if (roleActionValue !== routeActionValue) return false
   }
  }

  return true
 }