element-plus/packages/utils/vue/style.ts

import { isString, isNumber } from '../types'
import { debugWarn } from '../error'

const SCOPE = 'utils/vue/style'

export function addUnit(value: string | number, defaultUnit = 'px') {
  if (!value) return ''
  if (isString(value)) {
    return value
  } else if (isNumber(value)) {
    return `${value}${defaultUnit}`
  }
  debugWarn(SCOPE, 'binding value must be a string or number')
}