vue-ant-patterns/biz-es/_biz-utils/serialPromise.js

vue-ant-patterns

import _regeneratorRuntime from 'babel-runtime/regenerator';
/*
 * @Author: w.pengfei
 * @Date: 2020-09-06 14:37:52
 * @LastEditTime: 2020-09-06 19:29:08
 * @Description: ''
 * @LastEditors: w.pengfei
 */
var serialPromise = function serialPromise(arr) {
  return new Promise(function (resolve, reject) {
    if (!Array.isArray(arr)) {
      return reject('The parameter type is not an array');
    }
    if (!arr || !arr.length) {
      return reject(!arr ? 'Parameter is undefined' : 'Empty array');
    }
    var arrLen = arr.length;
    var generator = /*#__PURE__*/_regeneratorRuntime.mark(function generator() {
      var i, len;
      return _regeneratorRuntime.wrap(function generator$(_context) {
        while (1) {
          switch (_context.prev = _context.next) {
            case 0:
              i = 0, len = arr.length;

            case 1:
              if (!(i < len)) {
                _context.next = 7;
                break;
              }

              _context.next = 4;
              return arr[i];

            case 4:
              i++;
              _context.next = 1;
              break;

            case 7:
            case 'end':
              return _context.stop();
          }
        }
      }, generator, this);
    });
    var genRes = generator();
    var step = function step(nextHandler) {
      var next = nextHandler();
      arrLen--;

      if (arrLen <= 0 && next.done) {
        resolve('All success');
      }

      if (next.value) {
        next.value.then(function (data) {
          step(function () {
            return genRes.next();
          });
        })['catch'](function (e) {
          return reject(e);
        });
      }
    };

    step(function () {
      return genRes.next();
    });
  });
};

export default serialPromise;