cours-MDS/b3-dev/node/NPM-CHEATSHEET.md

# Node Package Manager (NPM) quick cheatsheet

## get help 
```
npm -h
```
## get help on a command
```
$ npm <command> -h
```
eg  :
```
$ npm init -h
```

## init a project (create package.json)
```
$ npm init
```

## install module globally (adds to package.json)
```
npm i -g saxon-js 
```
or long version
```
npm install -g saxon-js 
```


## install module localy (adds to package.json)
```
npm i saxon-js 
```

## install module localy and do not add to package json
```
npm i --no-save saxon-js 
```

## check all modules installed localy
```
$ npm ls
```

## check all modules installed globaly
```
$ npm ls -g
```

## uninstall local module
```
npm uninstall saxon-js 
```
Shorthand `u` does NOT work

## uninstall global module
```
npm uninstall -g saxon-js 
```

## sources 
 - https://docs.npmjs.com/cli/v6/commands/npm-install
 - https://www.tutorialspoint.com/nodejs/nodejs_npm.htm