/**
 * 用于处理异步函数的错误
 * @param promise {Promise} 异步函数
 * @returns {Promise<Array>} [err, val]
 */
export function handle (promise){
  return new Promise(resolve => {
    try{
      promise.then(val => {
        resolve([null, val])
      }).catch(err => {
        resolve([err,null])
      })
    }catch(err){
      resolve([err,null])
    }
  })
}

export function handleAll() {
  return new Promise(resolve => {
    try{
      // arguments 转数组
      let arr = [...arguments]
      // console.log(arr)
      // console.log(typeof arr)
      Promise.all(arr).then(val => {
        // console.log(val);
        resolve([null, ...val])
      }).catch(err => {
        resolve([err])
      })
    }catch(err){
      resolve([err])
    }
  })
}


export default {
  handle,
  handleAll
}