NPM common commands use commands to delete nodes_ Modules package

see npm command

 npm help

Global command parameters -g

npm install -g    //  Install Global 
 
npm uninstall -g  //   Unload the global 

overall situation node In bag i5ting_toc This bag can handle md Format the file into a web page   function i5ting_toc -f file name .md -0

Version installed

You can specify which version of the package to use  npm install Package name @ Version number Install the latest version without

Project installation

initialization  package.json

npm init -y

Installation package

   install  package Configuration in 

 npm install 

　　 Install multiple packages

npm install   Package name 1  Package name 2   Package name 3 

　 production / Development parameters

       
　　 npm i   Package name   --save （ -S ） //  Dependent packages for production environments    ==> dependencies      
   
     npm i --production  //  Only install  package  in  dependencies  The bag inside 

     npm install  Package name  --save-dev（ -D ） //   For development environment     ==>  devDependencies     

     npm install  //  All packages will be installed 

    View package information

npm info  Package name 

Solve the problem of being walled  

   Set the image path  

  npm config set registry=  Mirror address (https//registry.npm.taobao.org) 

Use cnpm 

npm install cnpm -g

Use nrm Change image     

npm install nrm  //  download 

nrm use taobao  //  Change image  

function package.json in  scripts Set command

npm run  dev  // script  Script configured in 

Other commands

 

npm ls --depth 0 -g //  Look at what failed 

npm prune -g //  Trim the global package 

npm rebuild -g //  Rebuild global package 

npm update -g //  Update the version of the global package 

npm cache clear --force -g //  Delete the cache of the global package （ Be careful ）

  Delete node_modules

  install  rimraf

npm install rimraf -g 

//  Use the command to delete  
rimraf node_modules //  You can also delete other folders or files 

Reference link

package.json Field analysis

• name： The name of the package , Must be unique , By lowercase letters 、 Numbers and underscores , Cannot contain spaces

• description： A brief description of the package

• version： A version string that conforms to the semantic version recognition specification

• keywords： Keyword array , Usually used to search for

• maintainers： Maintainer array , Each element should contain name、email（ Optional ）、web（ Optional ） Field

• contributors： Contributor array , Format and maintainers identical . The author of the package should be the first in the contributor array - Elements

• bugs： Submit bug The address of , It could be a website or an email address

• licenses： License array , Each element should contain type（ License name ） and url（ Link to... Of the license text - Address ） Field

• repositories： Warehouse managed address array , Each element should contain type（ Warehouse type , Such as git）、url（ warehouse - The address of the library ） and path（ Path relative to warehouse , Optional ） Field

• dependencies： Dependency of production environment package , An associative array , Consists of the package name and version number

• devDependencies： Dependency of development environment package , An associative array , Consists of the package name and version number

yarn 

yarn It's also a package management tool , Most orders come from npm be similar

It can be done by npm  Global installation  yarn

npm  install -g yarn

initialization package and npm similar

yarn init -y

Download all package All the dependencies in

yarn install  //  Download all dependencies 

yarn install --flat //  Only one version of each dependency is allowed 

yarn install --force  //  Pull all bags again , Even if it has been installed before .

Installation package  

yarn add   Package name   //  Add a dependency package 

yarn add    Package name   Package name   Package name  //  Add multiple dependent packages 

yarn global add  Package name  //  Global installation 

yarn add   Package name   -D  //  Add a dependency package to the development dependency 

yarn add   Package name   -P  //  Add a dependency package to the production dependency 

Display the information of a package

yarn info  Package name 

function package.json in  scripts Set command

yarn run dev // scripts Script configured in