zent/lib/utils/isPromise.js

一套前端设计语言和基于React的实现

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _typeof2 = require('babel-runtime/helpers/typeof');

var _typeof3 = _interopRequireDefault(_typeof2);

exports['default'] = isPromise;

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

/**
 * Test whether an object looks like a promise
 *
 * @export
 * @param {any} obj
 * @returns {bool}
 */
function isPromise(obj) {
  return !!obj && ((typeof obj === 'undefined' ? 'undefined' : (0, _typeof3['default'])(obj)) === 'object' || typeof obj === 'function') && typeof obj.then === 'function';
}