dash having space before and after ,auto saving

[differentMonster]

after i auto saving my script file reformat it self

import my-components from '@/components/my-components'

become to this after auto save ,all the dash space out

import my - components from '@/components/my-components'

which giving me a headcha how to config it ? do anyone know how to fix this space problem , can point me to a right direction ? i also hear js-beautify can disable this but where to ?