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npm-kokokeke

v0.0.48

Published

npm develop demo

Downloads

1

Readme

一、注册npm账号

  • 怎么将代码提到github,大家都知道需要一个github账号
  • 同样,开发一个npm包,当然也需要一个npm账号,将npm包发布到npm的托管服务器
  • 注册地址:http://npmjs.org
  • 该实例包含了模块的局部调用和全局调用两种方式

二、开发npm包

###1.目录构建

  • npm init
  • 项目结构:
.
├── bin           //命令配置
├── README.md     //说明文档
├── index.js      //主入口
├── src           //功能文件
├── package.json  //包信息
└── test          //测试用例

##2.开发模块

  • 入口index.js模块 非全局安装(npm install xxx),则多有的函数接口都通过index.js暴露给外部调用
/**
* Hello World
* @function hello
**/
const hello = function(key){
    console.log('Hello World!');
};

exports.hello     = hello;
  • init.js模块
const exec = require('child_process').exec;

exports.run = function(name) {
    //初始化一个空文件夹
    exec('mkdir ' + name,function() {
        console.log('king init命令已执行...');
    });
};
  • start.js模块
const express = require('express');
const app     = express();

exports.run = function(options) {
    const port = options.port || 3000;
    app.listen(port);
    console.log('服务已启动,正在监听' + port + '端口...');
};

###3.配置全局命令 bin目录下写配置代码

  • cli.js自定义命令,主要通过引入commander模块去处理,包括命令描述、参数及执行动作
  • king.js文件名称应与全局命令king保持一致,做命令的入口,具体看demo

三、发布npm包

###1.npm login

npm login

###2.npm publish

npm publish

四、全局安装和局部安装

###1.局部安装

  • 所有的函数功能接口都由index.js暴露给外部
  • src里面可以放功能代码,src --> index.js只做output,暴露给外部调用 ###2.全局安装
  • 包全局安装的情况,一般是做自动化工具,关键在于配置全局命令,与index.js无关
  • 通过bin目录下与全局命令相同的js文件(如king.js)处理command的输入【如:king start】

五、常见问题

###1. npm publish出错

npm ERR! publish Failed PUT 403
npm ERR! Darwin 16.0.0
npm ERR! argv "/usr/local/Cellar/node/5.6.0/bin/node" "/usr/local/bin/npm" "publish"
npm ERR! node v5.6.0
npm ERR! npm  v3.10.3
npm ERR! code E403

npm ERR! "You cannot publish over the previously published version 0.0.43." : npm-develop
npm ERR!
npm ERR! If you need help, you may report this error at:
npm ERR!     <https://github.com/npm/npm/issues>

npm ERR! Please include the following file with any support request:
npm ERR!     /Volumes/work/private/github/npm-develop/npm-debug.log

没有更新package.json的版本号,每次的版本号必须大于上次,否则无法publish

###2. 采用sudo npm publish password应该输入的是本机开机密码,非npm账号密码

###3. 全局命令无效 package.json中的bin命令配置,属性值应该和脚本名称一致

"bin": {
  "king": "./bin/king.js"
}

六、使用本例

  • download后修改项目名称根据第'三'步可发布,全局安装后可在本机测试,或局部安装后可调用hello函数测试