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The Context

The context provides additional objects/params from Nuxt to Vue components and is available in special nuxt lifecycle areas like asyncData, fetch, plugins, middleware and nuxtServerInit.

Note: "The Context" we refer to here is not to be confused with the context object available in Vuex Actions. The two are unrelated.

function (context) {
  // Universal keys
  const {
    app,
    store,
    route,
    params,
    query,
    env,
    isDev,
    isHMR,
    redirect,
    error,
    $config
  } = context
  // Server-side
  if (process.server) {
    const { req, res, beforeNuxtRender } = context
  }
  // Client-side
  if (process.client) {
    const { from, nuxtState } = context
  }
}

Universal keys

These keys are available both on client-side and server-side.

app

app (NuxtAppOptions)

The root Vue instance options that includes all your plugins. For example, when using i18n, you can get access to $i18n through context.app.i18n.

store

store (Vuex Store)

Vuex Store instance. Available only if the vuex store is set.

route

route (Vue Router Route)

Vue Router route instance.

params

params (Object)

Alias of route.params.

query

query (Object)

Alias of route.query.

env

env (Object)

Environment variables set in nuxt.config.js, see env api.

isDev

isDev (Boolean)

Boolean to let you know if you're in dev mode, can be useful for caching some data in production.

isHMR

isHMR (Boolean)

Boolean to let you know if the method/middleware is called from webpack hot module replacement (true only on client-side in dev mode).

redirect

redirect (Function)

Use this method to redirect the user to another route, the status code is used on the server-side, defaults to 302. redirect([status,] path [, query]).

error

error (Function)

Use this method to show the error page: error(params). The params should have the properties statusCode and message.

\$config

$config (Object)

The actual runtime config.

Server-side keys

These keys are available only on the server-side.

req

req (http.Request)

Request from the Node.js server. If Nuxt is used as a middleware, the request object might be different depending on the framework you're using.
Not available with static target.

Res

res (http.Response)

Response from the Node.js server. If Nuxt is used as a middleware, the res object might be different depending on the framework you're using.
Not available with static target.

beforeNuxtRender

beforeNuxtRender(fn) (Function)

Use this method to update __NUXT__ variable rendered on client-side, the fn (can be asynchronous) is called with { Components, nuxtState }, see example.

Client-side keys

These keys are available only on client-side.

from

from (Vue Router Route)

The route navigated from.

nuxtState

nuxtState (Object)

Nuxt state, useful for plugins which uses beforeNuxtRender to get the nuxt state on client-side before hydration. Available only in universal mode.

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