A ext for Promise to make it more easy to use,a deferred like.
npm install mini-dfdjs
/**
* 同 Promise.prototye.then 接口
*
* @memberof Deferred
*/
then: (onfulfilled?: (value: any) => any, onrejected?: (reason: any) => any) => Promise/**
* 同 Promise.prototype.catch 接口
*
* @memberof Deferred
*/
catch: (onrejected?: (reason: any) => any) => Promise
/**
* 将 promise 状态更改为 fulfilled
*
* @memberof Deferred
*/
resolve: (value?: any) => void
/**
* 将 promise 状态更改为 rejected
*
* @memberof Deferred
*/
reject: (reason?: any) => void
/**
* 获取原始 promise 对象
*
* @type {Promise}
* @memberof Deferred
*/
promise: Promise
`Example
js
// commonjs, node
// const Deferred = require('mini-dfd').default;// es6 module, typescript
import Deferred from 'mini-dfd';
function sleep(delay) {
let dfd = new Deferred();
setTimeout(function () {
dfd.resolve();
}, delay);
return dfd.promise;
}
(async () => {
for (let i = 0; i < 10; i++) {
console.log(new Date().getSeconds());
await sleep(1000);
}
})();
// result,may be like: 1,2,3,4,5,6,7,8,9
``