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import {type} from './type'
export function mergeDeepRight(target, source) {  if (arguments.length === 1) {    return sourceHolder => mergeDeepRight(target, sourceHolder)  }
  const willReturn = JSON.parse(JSON.stringify(target))
  Object.keys(source).forEach(key => {    if (type(source[key]) === 'Object') {      if (type(target[key]) === 'Object') {        willReturn[key] = mergeDeepRight(target[key], source[key])      } else {        willReturn[key] = source[key]      }    } else {      willReturn[key] = source[key]    }  })
  return willReturn}