mand-mobile/components/_locale/index.js

import defaultLang from './lang/zh-CN'

let lang = defaultLang

function template(str, option) {
  if (!str || !option) {
    return str
  }

  return str.replace(/\{(\w+)\}/g, (match, key) => {
    return option[key]
  })
}

export const t = (path, option) => {
  let value
  const array = path.split('.')
  let current = lang
  for (let i = 0, j = array.length; i < j; i++) {
    const property = array[i]
    value = current[property]
    if (i === j - 1) {
      return template(value, option)
    }
    if (!value) {
      return ''
    }
    current = value
  }
  return ''
}

export const setLocale = l => {
  lang = l || lang
}

export default {setLocale, t}