在npm上发布自己的vue组件库（使用npm install 或者 CDN的方式引用）

name：发布的包名，默认是上级文件夹名。不得与现在npm中的包名重复。包名不能有大写字母/空格/下滑线!
version：你这个包的版本，默认是1.0.0。对于npm包的版本号有着一系列的规则，模块的版本号采用X.Y.Z的格式，具体体现为：
1、修复bug，小改动，增加z。
2、增加新特性，可向后兼容，增加y
3、有很大的改动，无法向下兼容,增加x
description：项目简介
mian：入口文件，默认是index.js
scripts：包含各种脚本执行命令
test：测试命令。
author：自己的账号名
license：开源文件协议
private：是否私有

require(X) from module at path Y
1. If X is a core module,
a. return the core module
b. STOP
2. If X begins with '/'
a. set Y to be the filesystem root
3. If X begins with './' or '/' or '../'
a. LOAD_AS_FILE(Y + X)
b. LOAD_AS_DIRECTORY(Y + X)
4. LOAD_NODE_MODULES(X, dirname(Y))
5. THROW "not found"

LOAD_AS_FILE(X)
1. If X is a file, load X as JavaScript text. STOP
2. If X.js is a file, load X.js as JavaScript text. STOP
3. If X.json is a file, parse X.json to a JavaScript Object. STOP
4. If X.node is a file, load X.node as binary addon. STOP

LOAD_INDEX(X)
1. If X/index.js is a file, load X/index.js as JavaScript text. STOP
2. If X/index.json is a file, parse X/index.json to a JavaScript object. STOP
3. If X/index.node is a file, load X/index.node as binary addon. STOP

LOAD_AS_DIRECTORY(X)
1. If X/package.json is a file,
a. Parse X/package.json, and look for "main" field.
b. If "main" is a falsy value, GOTO 2.
c. let M = X + (json main field)
d. LOAD_AS_FILE(M)
e. LOAD_INDEX(M)
f. LOAD_INDEX(X) DEPRECATED
g. THROW "not found"
2. LOAD_INDEX(X)

LOAD_NODE_MODULES(X, START)
1. let DIRS = NODE_MODULES_PATHS(START)
2. for each DIR in DIRS:
a. LOAD_AS_FILE(DIR/X)
b. LOAD_AS_DIRECTORY(DIR/X)

NODE_MODULES_PATHS(START)
1. let PARTS = path split(START)
2. let I = count of PARTS - 1
3. let DIRS = [GLOBAL_FOLDERS]
4. while I >= 0,
a. if PARTS[I] = "node_modules" CONTINUE
b. DIR = path join(PARTS[0 .. I] + "node_modules")
c. DIRS = DIRS + DIR
d. let I = I - 1
5. return DIRS

……
process.env.NODE_ENV = 'production';
module.exports = merge(webpackBaseConfig, {
devtool: 'source-map',
entry: {
main: './src/index.js'
},
output: {
path: path.resolve(__dirname, '../dist'),
publicPath: '/dist/',
filename: 'iview.js',
library: 'iview',
libraryTarget: 'umd',
umdNamedDefine: true
},
……
});

import Affix from './components/affix';
……

const components = {
Affix,
……
};

const iview = {
...components,
iButton: Button,
……
};

const install = function(Vue, opts = {}) {
if (install.installed) return;
……

Object.keys(iview).forEach(key => {
Vue.component(key, iview[key]);
});

……
};

// auto install
if (typeof window !== 'undefined' && window.Vue) {
install(window.Vue);
}

const API = {
……
install,
……
};

……

module.exports.default = module.exports = API; // eslint-disable-line no-undef

var path = require('path')
var webpack = require('webpack')
const NODE_ENV = process.env.NODE_ENV

module.exports = {
//入口这里一个是测试组件时npm run dev的入口文件，一个是npm run build的入口文件
entry: NODE_ENV === 'development' ? './src/main.js' : './index.js',
output: {
path: path.resolve(__dirname, './dist'),
publicPath: '/dist/', //输出的文件夹
filename: 'filename.js',//输出的文件名
library: 'objectname', //引用js文件时创建的全局变量名
libraryTarget: 'umd',
umdNamedDefine: true
},
……
}

{
"name": "package-name",
"description": "描述",
"version": "1.0.0",
"author": "XXXXXXXXXXX",
"license": "MIT",
"private": false,
"main": "dist/filename.js",
……
}

npm run build
npm publish
使用
//npm导入
npm i package-name

import xxx from 'package-name'
Vue.use(xxx)

<script src="//vuejs.org/js/vue.min.js"></script>
<script src="//https://unpkg.com/package-name@1.0.0/dist/filename.js"></script>