@vue-storefront/theme-starter/extensions/example/index.js

Scaffolding for building Vue Storefront themes

const EXTENSION_KEY = 'theme_default_example'

export default function (app, router, store, config) {
  app.$on('application-after-init', () => {
    console.debug('Hello from custom theme extension')
  })
  return { EXTENSION_KEY, extensionRoutes: null, extensionStore: null }
}