grunt-auto-install 

> Install and update npm and bower dependencies.
> It looks for 'package.json' and 'bower.json' files, and runs 'npm install' and 'bower install' respectively only if they exist.
> (You can also explicitly disable npm/bower tasks even if those files exist.)

Getting Started

This plugin requires Grunt ~0.4.0

If you haven't used Grunt before, be sure to check out the Getting Started guide, as it explains how to create a Gruntfile as well as install and use Grunt plugins. Once you're familiar with that process, you may install this plugin with this command:

``shell
npm install grunt-auto-install --save-dev
`

Once the plugin has been installed, it may be enabled inside your Gruntfile with this line of JavaScript:

`js
grunt.loadNpmTasks('grunt-auto-install');
`

The "auto_install" task

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In your project's Gruntfile, add a section named auto_install to the data object passed into grunt.initConfig().

`js
grunt.initConfig({
auto_install: {
local: {},
subdir: {
options: {
cwd: 'subdir',
stdout: true,
stderr: true,
failOnError: true,
npm: '--production'
}
}
},
});
`

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#### cwd
Type: String
Default value: '' - runs in current directory

The working directory to run 'npm install' and 'bower install'. (relative path)

#### stdout
Type: Boolean
Default value: true

Shows stdout in the terminal.

#### stderr
Type: Boolean
Default value: true

Shows stderr in the terminal.

#### failOnError
Type: Boolean
Default value: true

Instructs the auto-install task to fail the grunt run if an error occurs during the task execution.

#### npm
Type: Boolean String
Default value: true

Set to false to turn off npm install so that it will not run even if there is a package.json file present.
If a String is specified, it is passed as an install option flags to npm install.
For example, --production flag could be used not to install modules listed in devDependencies.

#### bower
Type: Boolean String
Default value: true

Set to false to turn off bower install so that it will not run even if there is a bower.json file present.
If a String is specified, it is passed as an install option flags to bower install.
For example, --production flag could be used not to install modules listed in devDependencies and
--allow-root flag could be used so all is done using a root user.

#### recursive
Type: Boolean
Default value: false

Set to true to turn on the recursive installation.
Will walk the entire directory tree and install dependencies for any package contained in a subdirectory

#### match
Type: String [String]
Default value: '.*'

When recursive is set to true, will perform the installation only on the directories that match a regular expression, or one in an array of regular expressions.

#### exclude
Type: String [String]
Default value: '/(?=a)b/'

When recursive is set to true, will ignore the directories (and it's sub directories) that match with a regular expression, or one in an array of regular expressions.

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#### Default Options

`js
grunt.initConfig({
auto_install: {
local: {}
},
});
`

#### Custom Options

`js
grunt.initConfig({
auto_install: {
subdir: {
options: {
cwd: 'subdir',
stderr: false,
failOnError: false,
npm: false,
bower: '--allow-root'
}
}
},
});
`

#### Recursive Option
You will most likely not use the match option

`js
auto_install: {
grunt.initConfig({
local: {},
options: {
recursive: true,
exclude: ['.git', 'node_modules', 'bower_components']
}
}
}
``

Contributing

In lieu of a formal styleguide, take care to maintain the existing coding style. Add unit tests for any new or changed functionality. Lint and test your code using Grunt.

Release History

* 2016-05-20   v0.3.1   Update peerDependencies to support Grunt 1.0
* 2015-10-11   v0.3.0   Added recursive options
* 2015-06-09   v0.2.4   Disabled maxBuffer to avoid the maxBuffer exceeded error
* 2014-12-18   v0.2.3   Added npm and bower options, and removed production option
* 2014-10-25   v0.2.2   Added production option
* 2014-02-27   v0.2.0   Converted to MultiTask
* 2013-12-09   v0.1.1   Updated package.json
* 2013-12-07   v0.1.0   Initial Release