vue cli3/4 命令行创建工程

1、安装nodejs，npm

https://www.cnblogs.com/xidianzxm/p/12036880.html

2、安装vue cli

sudo npm install -g @vue/cli --unsafe-perm

3、使用vue cli创建vue工程

MacBookPro:vue zhangxm$ vue init webpack vue_demo

  Command vue init requires a global addon to be installed.
  Please run npm install -g @vue/cli-init and try again.

MacBookPro:vue zhangxm$ sudo npm install -g @vue/cli-init
Password:
npm WARN deprecated coffee-script@1.12.7: CoffeeScript on NPM has moved to "coffeescript" (no hyphen)
+ @vue/cli-init@4.1.1
added 256 packages from 208 contributors in 23.16s
MacBookPro:vue zhangxm$ 

4、vue init webpack vue_demo（vue-cli2.x 方式）最好用vue create方式（第7节）（vue-cli 3.x方式）

MacBookPro:vue zhangxm$ vue init webpack vue_demo

? Project name vue_demo
? Project description A Vue.js project
? Author
? Vue build standalone
? Install vue-router? Yes
? Use ESLint to lint your code? Yes
? Pick an ESLint preset Standard
? Set up unit tests No
? Setup e2e tests with Nightwatch? No
? Should we run `npm install` for you after the project has been created? (recommended) npm

   vue-cli · Generated "vue_demo".


# Installing project dependencies ...
# ========================

npm WARN deprecated browserslist@2.11.3: Browserslist 2 could fail on reading Browserslist >3.0 config used in other tools.
npm WARN deprecated bfj-node4@5.3.1: Switch to the `bfj` package for fixes and new features!
npm WARN deprecated core-js@2.6.11: core-js@<3 is no longer maintained and not recommended for usage due to the number of issues. Please, upgrade your dependencies to the actual version of core-js@3.
npm WARN deprecated browserslist@1.7.7: Browserslist 2 could fail on reading Browserslist >3.0 config used in other tools.
npm WARN deprecated circular-json@0.3.3: CircularJSON is in maintenance only, flatted is its successor.

> fsevents@1.2.11 install /Users/zhangxm/codes/vue/vue_demo/node_modules/fsevents
> node-gyp rebuild

  SOLINK_MODULE(target) Release/.node
  CXX(target) Release/obj.target/fse/fsevents.o
  SOLINK_MODULE(target) Release/fse.node

> core-js@2.6.11 postinstall /Users/zhangxm/codes/vue/vue_demo/node_modules/core-js
> node -e "try{require('./postinstall')}catch(e){}"

Thank you for using core-js ( https://github.com/zloirock/core-js ) for polyfilling JavaScript standard library!

The project needs your help! Please consider supporting of core-js on Open Collective or Patreon: 
> https://opencollective.com/core-js 
> https://www.patreon.com/zloirock 

Also, the author of core-js ( https://github.com/zloirock ) is looking for a good job -)


> ejs@2.7.4 postinstall /Users/zhangxm/codes/vue/vue_demo/node_modules/ejs
> node ./postinstall.js

Thank you for installing EJS: built with the Jake JavaScript build tool (https://jakejs.com/)


> uglifyjs-webpack-plugin@0.4.6 postinstall /Users/zhangxm/codes/vue/vue_demo/node_modules/webpack/node_modules/uglifyjs-webpack-plugin
> node lib/post_install.js

npm notice created a lockfile as package-lock.json. You should commit this file.
added 1393 packages from 724 contributors in 50.847s

21 packages are looking for funding
  run `npm fund` for details



Running eslint --fix to comply with chosen preset rules...
# ========================


> vue_demo@1.0.0 lint /Users/zhangxm/codes/vue/vue_demo
> eslint --ext .js,.vue src "--fix"


# Project initialization finished!
# ========================

To get started:

  cd vue_demo
  npm run dev
  
Documentation can be found at https://vuejs-templates.github.io/webpack


MacBookPro:vue zhangxm$ 

5、npm run dev

cd vue_demo
npm install
npm run dev

MacBookPro:vue zhangxm$ pwd
/Users/zhangxm/codes/vue
MacBookPro:vue zhangxm$ cd vue_demo/
MacBookPro:vue_demo zhangxm$ npm install
up to date in 6.459s

21 packages are looking for funding
  run `npm fund` for details

MacBookPro:vue_demo zhangxm$ npm run dev

> vue_demo@1.0.0 dev /Users/zhangxm/codes/vue/vue_demo
> webpack-dev-server --inline --progress --config build/webpack.dev.conf.js

 13% building modules 27/31 modules 4 active ...hangxm/codes/vue/vue_demo/src/App.vue{ parser: "babylon" } is deprecated; we now treat it as { parser: "babel" }.
 95% emitting                                                                        

 DONE  Compiled successfully in 3207ms                                                                                                                                       15:04:30

 I  Your application is running here: http://localhost:8080

6、目录结构

7、vue create vue_test

手工选择

生成目录结构

package.json：只能确定依赖的大版本，并不能确定依赖的版本号
package-lock.json ：npm生成的，用来锁定npm包的版本
一次性安装所有依赖的模块:npm install 命令,不指定模块，会安装package.json 中dependencies和devDependencies中的依赖

如安装报错

ERROR command failed: npm install --loglevel error --registry
尝试清楚npm缓存：npm cache clean --force