How can vue directive be called in the form of export default?

the examples I search on the Internet are called in the following ways. I want to know how to use export default in the webpack template to call it?

Vue.directive("focus", {
  //  DOM 
  inserted: function (el) {
    // 
    el.focus()
  }
})

export default {
directives: {

//  v-focus
focus: {
  // 
  inserted: function (el) {
    // 
    el.focus()
  }
}
}}

write the contents of the instruction into a file, then import is introduced into the variable, and

is introduced into the vue real column.
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e3de74-64d89.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e3de74-64d89.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?