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# node.js
[Node.js](https://nodejs.org/fr/)® est un environnement dexécution JavaScript construit sur le [moteur JavaScript V8 de Chrome](https://developers.google.com/v8/).
[npm](https://www.npmjs.com) est un gestionnaire de paquets pour JavaScript automatiquement installé avec Node.
[nvm](https://github.com/creationix/nvm) (Node Version Manager) est un gestionnaire de version de Node.
### Installation (Homebrew):
```bash
# installer node et npm
$ brew install node
```
### Installation (directe):
Installer [Node.js](https://nodejs.org/en/download/) (version LTS)
### Installation ([nvm](nvm.md)):
```bash
$ brew install nvm
# installer Node 8
$ nvm install 8
# installer Node 10
$ nvm install 10
```
### Version de npm:
```bash
# version:
$ node -v
v9.5.0
$ npm -v
5.6.0
```
### Update:
```bash
npm install npm@latest -g
$ brew install node
$ npm install npm --global
```
https://docs.npmjs.com/getting-started/fixing-npm-permissions#option-2-change-npms-default-directory-to-another-directory
### Local:
Installer npm packages localement => `/Users/bruno/Sites/node_modules`
- Installer: `npm install <package_name>`
- Mise-à-jour: `npm update` (depuis le répertoire du module)
- Desinstaller: `npm uninstall <package_name>`
<u>Mises à jour disponibles:</u>
```bash
bruno@silverbook:~/Sites/node_modules$ npm outdated
Package Current Wanted Latest Location
jquery MISSING 3.2.1 3.2.1
livephotoskit 1.4.11 1.5.2 1.5.2
```
<u>Mettre-à-jour:</u>
```bash
$ npm outdated | awk '{print $1}' | xargs npm update
```
### Global:
Installer npm packages globalement => `/usr/local/lib/node_modules/`
- Installer: `npm install -g <package_name>`
- Mise-à-jour: `npm update -g <package_name>`
- Désinstaller: `npm uninstall -g <package_name>`
### Aller dans node_modules:
```bash
bruno@SilverBook:~$ cd Sites/node_modules/
```
puis
- Liste package installé: `nom ls`
- Mises à jour disponibles: `nom outdated`
- Installer une m-à-j: `nom update`
- Installer un package: `nom install package`
- Désinstaller un package: `nom uninstall package`
### Supprimer tous les modules:
```bash
$ for package in `ls node_modules`; do npm uninstall $package; done;
```
### Maintenance:
```bash
$ npm doctor
npm WARN verifyCachedFiles Content garbage-collected: 46 (4358853 bytes)
npm WARN verifyCachedFiles Cache issues have been fixed
Check Value Recommendation
npm ping OK
npm -v v5.10.0 Use npm v6.4.1
node -v v8.11.4
npm config get registry https://registry.npmjs.org/
which git /usr/bin/git
Perms check on cached files ok
Perms check on global node_modules ok
Perms check on local node_modules ok
Verify cache contents verified 2159 tarballs
```
### Packages:
[Rechercher un package](https://npms.io)
##### uninstall-all-modules
Desinstaller tous les modules=
```bash
$ npm uninstall
```
##### livephotoskit, jquery, picturefill