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https://github.com/you21979/node-promise-util-task
https://github.com/you21979/node-promise-util-task
Last synced: 3 days ago
JSON representation
- Host: GitHub
- URL: https://github.com/you21979/node-promise-util-task
- Owner: you21979
- License: mit
- Created: 2015-08-06T06:53:39.000Z (over 9 years ago)
- Default Branch: master
- Last Pushed: 2018-04-25T03:06:14.000Z (over 6 years ago)
- Last Synced: 2024-11-05T18:15:39.304Z (7 days ago)
- Language: TypeScript
- Size: 22.5 KB
- Stars: 4
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# promise-util-task
[](https://nodei.co/npm/promise-util-task)
[](https://travis-ci.org/you21979/node-promise-util-task)
[](https://coveralls.io/github/you21979/node-promise-util-task?branch=master)
## install
```
npm i promise-util-task
```
## task.seq(tasklist)
sequentially processing
```:seq.js
var task = require('promise-util-task');
var timeout = function(callback, ms) {
return new Promise(function(resolve, reject) {
setTimeout(function() {
resolve(callback());
}, ms);
});
};
var tasklist = [
function(){return timeout(function(){return 1}, Math.random() + 1000)},
function(){return timeout(function(){return 2}, Math.random() + 1000)},
function(){return timeout(function(){return 3}, Math.random() + 1000)},
function(){return timeout(function(){return 4}, Math.random() + 1000)},
function(){return timeout(function(){return 5}, Math.random() + 1000)},
function(){return timeout(function(){return 6}, Math.random() + 1000)},
function(){return timeout(function(){return 7}, Math.random() + 1000)},
function(){return timeout(function(){return 8}, Math.random() + 1000)},
function(){return timeout(function(){return 9}, Math.random() + 1000)},
function(){return timeout(function(){return 10}, Math.random() + 1000)}
];
console.time("elapsed time - seq");
task.seq(tasklist).then(function(res){
console.timeEnd("elapsed time - seq");
console.log(res);
})
```
```:result
elapsed time - seq: 10033ms
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ]
```
## task.all(tasklist)
parallel processing
```:all.js
var task = require('promise-util-task');
var timeout = function(callback, ms) {
return new Promise(function(resolve, reject) {
setTimeout(function() {
resolve(callback());
}, ms);
});
};
var tasklist = [
function(){return timeout(function(){return 1}, Math.random() + 1000)},
function(){return timeout(function(){return 2}, Math.random() + 1000)},
function(){return timeout(function(){return 3}, Math.random() + 1000)},
function(){return timeout(function(){return 4}, Math.random() + 1000)},
function(){return timeout(function(){return 5}, Math.random() + 1000)},
function(){return timeout(function(){return 6}, Math.random() + 1000)},
function(){return timeout(function(){return 7}, Math.random() + 1000)},
function(){return timeout(function(){return 8}, Math.random() + 1000)},
function(){return timeout(function(){return 9}, Math.random() + 1000)},
function(){return timeout(function(){return 10}, Math.random() + 1000)}
];
console.time("elapsed time - all");
task.all(tasklist).then(function(res){
console.timeEnd("elapsed time - all");
console.log(res);
})
```
```:result
elapsed time - all: 1007ms
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ]
```
## task.limit(tasklist, limit_count)
limited parallel processing
```:limit.js
var task = require('promise-util-task');
var timeout = function(callback, ms) {
return new Promise(function(resolve, reject) {
setTimeout(function() {
resolve(callback());
}, ms);
});
};
var tasklist = [
function(){return timeout(function(){return 1}, Math.random() + 1000)},
function(){return timeout(function(){return 2}, Math.random() + 1000)},
function(){return timeout(function(){return 3}, Math.random() + 1000)},
function(){return timeout(function(){return 4}, Math.random() + 1000)},
function(){return timeout(function(){return 5}, Math.random() + 1000)},
function(){return timeout(function(){return 6}, Math.random() + 1000)},
function(){return timeout(function(){return 7}, Math.random() + 1000)},
function(){return timeout(function(){return 8}, Math.random() + 1000)},
function(){return timeout(function(){return 9}, Math.random() + 1000)},
function(){return timeout(function(){return 10}, Math.random() + 1000)}
];
console.time("elapsed time - limit");
task.limit(tasklist, 5).then(function(res){
console.timeEnd("elapsed time - limit");
console.log(res);
})
```
```:result
elapsed time - limit: 2009ms
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ]
```
## typescript sample
```:seq.ts
import * as put from 'promise-util-task'
import * as psleep from '@you21979/promise-sleep'
const list = [
() => psleep(Math.random() + 1000, 1),
() => psleep(Math.random() + 1000, 2),
() => psleep(Math.random() + 1000, 3),
() => psleep(Math.random() + 1000, 4),
() => psleep(Math.random() + 1000, 5),
() => psleep(Math.random() + 1000, 6),
() => psleep(Math.random() + 1000, 7),
() => psleep(Math.random() + 1000, 8),
() => psleep(Math.random() + 1000, 9),
() => psleep(Math.random() + 1000, 10)
]
console.time("elapsed time - seq");
put.seq(list).then((res) => {
console.timeEnd("elapsed time - seq");
console.log(res)
})
```
# compatible note
## 0.1.0
### Promise
This module removed bluebird from version 0.1.0
### TypeScript support
rewrite typescript.