$ npm init
This utility will walk you through creating a package.json file.
It only covers the most common items, and tries to guess sensible defaults.

See `npm help json` for definitive documentation on these fields
and exactly what they do.

Use `npm install <pkg>` afterwards to install a package and
save it as a dependency in the package.json file.

Press ^C at any time to quit.
package name: (todolist)

package name: (todolist) todolist
version: (1.0.0)

version: (1.0.0)
description:

description: a vue component of todolist
entry point:(webpack.config.js)

entry point:(webpack.config.js) ./dist/todoList.min.js
test command:
git repository:

keywords: todolist vue
author: wuwhs
license: (ISC)
About to write to D:\WampServer\wamp\www\todoList\package.json:

{
 "name": "vue-todolist",
 "version": "1.0.0",
 "description": "a vue component of todolist",
 "main": "dist/todolist.min.js",
 "scripts": {
  "test": "echo \"Error: no test specified\" && exit 1"
 },
 "keywords": [
  "todolist",
  "vue"
 ],
 "author": "wuwhs",
 "license": "ISC"
}

Is this ok? (yes) yes

$ npm adduser
Username: wuwhs
Password: balabala...
Email: (this IS public) balabala...
Logged in as wuwhs on https://registry.npmjs.org/.

$ npm publish
+ vue-todolist@1.0.0

$ npm publish
npm ERR! publish Failed PUT 403
npm ERR! code E403
npm ERR! You do not have permission to publish "vue-router". Are you logged in as the correct user? : vue-router

npm ERR! A complete log of this run can be found in:
npm ERR!   C:\Users\Administrator\AppData\Roaming\npm-cache\_logs\2018-04-02T15_41_56_696Z-debug.log

$ npm publish
npm ERR! publish Failed PUT 403
npm ERR! code E403
npm ERR! You cannot publish over the previously published versions: 1.0.1. : vue-todolist

npm ERR! A complete log of this run can be found in:
npm ERR!   C:\Users\Administrator\AppData\Roaming\npm-cache\_logs\2018-04-02T15_40_28_571Z-debug.log

--todoList
  --src
    --components
      --todoItem.vue
      --todoList.vue
    --App.vue
    --index.js
    --main.js
  --index.html
  --webpack.config.js
  --package.json
  --.babelrc
  --.npmignore

{
 "name": "vue-todolist",
 "description": "a vue component of todolist",
 "version": "1.0.0",
 "author": "wuwhs",
 "license": "MIT",
 "private": false,
 "main": "./dist/todoList.min.js",
 "scripts": {
  "dev": "cross-env NODE_ENV=development webpack-dev-server --open --hot",
  "build": "cross-env NODE_ENV=production webpack --progress --hide-modules"
 },
 "dependencies": {
  "vue": "^2.5.11"
 },
 "browserslist": [
  "> 1%",
  "last 2 versions",
  "not ie <= 8"
 ],
 "devDependencies": {
  "babel-core": "^6.26.0",
  "babel-loader": "^7.1.2",
  "babel-preset-env": "^1.6.0",
  "babel-preset-stage-3": "^6.24.1",
  "cross-env": "^5.0.5",
  "css-loader": "^0.28.7",
  "file-loader": "^1.1.4",
  "vue-loader": "^13.0.5",
  "vue-template-compiler": "^2.4.4",
  "webpack": "^3.6.0",
  "webpack-dev-server": "^2.9.1"
 }
}

var path = require('path')
var webpack = require('webpack')

module.exports = {
 entry: './src/main.js',
 output: {
  path: path.resolve(__dirname, './dist'),
  publicPath: '/dist/',
  filename: 'build.js'
 },
 module: {
  rules: [
   {
    test: /\.css$/,
    use: [
     'vue-style-loader',
     'css-loader'
    ],
   },   
   {
    test: /\.vue$/,
    loader: 'vue-loader',
    options: {
     loaders: {
     }
     // other vue-loader options go here
    }
   },
   {
    test: /\.js$/,
    loader: 'babel-loader',
    exclude: /node_modules/
   },
   {
    test: /\.(png|jpg|gif|svg)$/,
    loader: 'file-loader',
    options: {
     name: '[name].[ext]?[hash]'
    }
   }
  ]
 },
 resolve: {
  alias: {
   'vue$': 'vue/dist/vue.esm.js'
  },
  extensions: ['*', '.js', '.vue', '.json']
 },
 devServer: {
  historyApiFallback: true,
  noInfo: true,
  overlay: true
 },
 performance: {
  hints: false
 },
 devtool: '#eval-source-map'
}

if (process.env.NODE_ENV === 'production') {
 module.exports.devtool = '#source-map'
 module.exports.plugins = (module.exports.plugins || []).concat([
  new webpack.DefinePlugin({
   'process.env': {
    NODE_ENV: '"production"'
   }
  }),
  new webpack.optimize.UglifyJsPlugin({
   sourceMap: true,
   compress: {
    warnings: false
   }
  }),
  new webpack.LoaderOptionsPlugin({
   minimize: true
  })
 ])
}

{
 "presets": [
  ["env", { "modules": false }],
  "stage-3"
 ]
}

import Vue from 'vue'
import App from './App.vue'

new Vue({
 el: '#app',
 render: h => h(App)
})

<template>
 <div id="app">
  Hello, todo-list!
 </div>
</template>

<script>
export default {
 name: 'app'
}
</script>

<!DOCTYPE html>
<html lang="en">
 <head>
  <meta charset="utf-8">
  <title>todolist</title>
 </head>
 <body>
  <div id="app"></div>
  <script src="./dist/build.js"></script>
 </body>
</html>

<template>
<div">
 <input
  v-model="newTodoText"
  v-on:keyup.enter="addNewTodo"
  placeholder="Add a todo"
 >
 <ul>
  <li
   is="todo-item"
   v-for="(todo, index) in todos"
   v-bind:key="todo.id"
   v-bind:title="todo.title"
   v-on:remove="todos.splice(index, 1)"
  ></li>
 </ul>
</div>
</template>

<script>
import TodoItem from './TodoItem'
export default {
 components: {
  TodoItem
 },
 data () {
  return {
   newTodoText: '',
   todos: [
    {
     id: 1,
     title: 'Do the dishes',
    }
   ],
   nextTodoId: 2
  }
 },
 methods: {
  addNewTodo: function () {
   this.todos.push({
    id: this.nextTodoId++,
    title: this.newTodoText
   })
   this.newTodoText = ''
  }
 }
}
</script>

<template>
<li>
 {{ title }}
 <button v-on:click="$emit('remove')">X</button>
</li>
</template>

<script>
export default {
 props: ['title']
}
</script>

<template>
 <div id="app">
  <todo-list></todo-list>
 </div>
</template>

<script>
import TodoList from './components/todoList'
export default {
 name: 'app',
 components: {
  TodoList
 }
}
</script>

import TodoList from './components/todoList.vue'

export default TodoList

module.exports = {
 entry: './src/index.js',
 output: {
  path: path.resolve(__dirname, './dist'),
  publicPath: '/dist/',
  filename: 'todoList.min.js'
 },
 ...
}

<script>
import TodoList from '../dist/todoList.min.js'
export default {
 name: 'app',
 components: {
  TodoList
 }
}
</script>

vue.esm.js?3153:591 [Vue warn]: Failed to mount component: template or render function not defined.

found in

---> <TodoList>
    <App> at src\App.vue
     <Root>

 output: {
  path: path.resolve(__dirname, './dist'),
  publicPath: '/dist/',
  filename: 'todoList.min.js',
  library: 'vueTodoList',
  libraryTarget: 'umd',
  umdNamedDefine: true
 }

.DS_Store
node_modules/
npm-debug.log
yarn-error.log

# Editor directories and files
.idea
.editorconfig
*.suo
*.ntvs*
*.njsproj
*.sln

$ npm publish
+ vue-todolist@1.0.3

$ cnpm install vue-todolist --save
√ Installed 1 packages
√ Linked 1 latest versions
√ Run 0 scripts
Recently updated (since 2018-03-27): 1 packages (detail see file D:\appSoft\wampserver\wamp64\www\todoList\node_modules\.recently_updates.txt)
 Today:
  → vue-todolist@*(1.0.3) (11:15:22)
√ All packages installed (1 packages installed from npm registry, used 564ms, speed 528.68kB/s, json 2(281.56kB), tarball 16.62kB)

<script>
import TodoList from 'vue-todolist'
export default {
 name: 'app',
 components: {
  TodoList
 }
}
</script>