yarn-install   

If command yarn exists it uses Yarn to install, otherwise fallbacks to npm.

Install

``bash
$ npm install --save yarn-install
`

Usage

`js
const install = require('yarn-install')

const result = install({
deps: ['webpack', 'mocha']
})
//=> result, returned by child_process.spawnSync
`

CLI

`bash
yarn global add yarn-install

then you will have yarn-install & yarn-remove commands

don't forget that yarn-install with dependencies is always --save by default.

yarn-install help
yarn-remove help
`

API

$3

#### options

##### deps

Type: array

An array of dependencies to install, you can omit it to install dependencies in package.json. If dependencies is present, it defaults to --save mode.

`js
install({
deps: ['ava', 'koa']
})
`

##### cwd

Type: string

The directory to run the command.

##### registry

Type: string

Specfic a custom npm registry to use.

##### dev

Type: boolean

Use --dev for Yarn and --save-dev for npm.

##### global

Type: boolean

Install globally, stands for npm --global or yarn global.

##### remove

Type: boolean

Default: undefined

The reversed behavior to install, ie. yarn remove and npm uninstall

##### production

Type: boolean

Default: undefined

Only install dependencies in package.json.

##### respectNpm5

Type: boolean

Default: undefined

Use npm if it's >= npm5.

$3

Get the package manager that will be used to install.

#### options

##### respectNpm5

`js
// Given you have yarn & npm 4 installed
const pm = install.getPm()
//=> yarn

// Given you have yarn & npm 5 installed
const pm = install.getPm()
//=> yarn

// Given you have yarn & npm 5 installed
const pm = install.getPm({ respectNpm5: true })
//=> npm
`

Contributing

1. Fork it!
2. Create your feature branch: git checkout -b my-new-feature
3. Commit your changes: git commit -am 'Add some feature'
4. Push to the branch: git push origin my-new-feature`
5. Submit a pull request :D

License

MIT © EGOIST