NuxtApp

In Nuxt 3, you can access runtime app context within composables, components and plugins. In Nuxt 2, this was referred to asNuxt context.

Accessing NuxtApp

Within composables, plugins and components you can accessnuxtApp withuseNuxtApp:

functionuseMyComposable () {constnuxtApp=useNuxtApp()// access runtime nuxt app instance}

Plugins also receivenuxtApp as the first argument for convenience.Read more about plugins.

Providing Helpers

You can provide helpers to be usable across all composables and application. This usually happens within a Nuxt plugin.

constnuxtApp=useNuxtApp()nuxtApp.provide('hello', (name)=>`Hello${name}!`)console.log(nuxtApp.$hello('name'))// Prints "Hello name!"

In Nuxt 2 plugins, this was referred to asinject function.