# Reference

# Context

This context object will be passed to all your UVue plugins hooks. So, this object will be avalaible in your asyncData() method, fetch() method, onHttpRequest() action and in your defined middlewares.

Variable name	Type	Description
`app`	Vue instance	The main component of the application (only after `beforeCreate()` hook)
`router`	Vue router instance	Router of the application. Docs
`store`	Vuex instance	Vuex store if installed. Docs
`redirect`	Function	Simple function to redirect to a specific page. Docs
`error`	Function	Simple function to display an error page: Docs
`url`	String	URL of current page.
`req`	IncomingMessage	SSR only Docs
`res`	ServerResponse	SSR only Docs

# Route special variables

Below variables will be available in a route context (like asyncData(), fetch() method, onHttpRequest() action and in your defined middlewares). If you write your own UVue plugin, these will be avalaible in your routeResolve() and routeError() hooks.

Variable name	Type	Description
`route`	Route	The current route object. See: Route Object
`params`	Object	Alias of `route.params`
`query`	Object	Alias of `route.query`

# Process variables

Below variables will be replaced during Webpack bundling with defined values and depends on the build context.

Variable name	Description
`process.dev`	Return `true` in development mode, `false` otherwise
`process.test`	Is `true` if in test environment
`process.prod`	Return `true` in production mode, `false` otherwise
`process.spa`	Return `true` in SPA mode, `false` in SSR mode
`process.ssr`	Return `true` in SSR mode, `false` in SPA mode
`process.client`	In SSR mode only: return `true` if in client rendering, `false` if in server side rendering
`process.server`	In SSR mode only: return `true` if in server side rendering, `false` otherwise

TIP

To inject environment variables see the official Vue CLI documentation

# Server context

This context is passed to some server plugins hooks

Variable name	Type	Description
`url`	String	URL of current page.
`req`	IncomingMessage	Docs
`res`	ServerResponse	Docs
`redirected`	Boolean	Indicate if current request is redirected
`statusCode`	Number	HTTP status code to send to client from your Vue application
`bodyAdd`	String	String to add before `</body>`
`headAdd`	String	String to add before `</head>`
`data.state`	String	Data from server side for Vuex store
`data.components`	String	Data from server side for page components

# Server response

This object is passed to some server plugins hooks

Variable name	Type	Description
`body`	String	HTML to send to client
`status`	Number	HTTP status code to send to client

Helpers →