fix(module): always transpile nanoiid

#472

Author: pi0

docs/guide/setup.md

@@ -28,11 +28,3 @@ auth: {
 ::: warning IMPORTANT
 When adding `auth-module` to a new Nuxt project ensure you have activated the Vuex store. More information on how to do that can be found on the [Nuxt Getting Started Guide](https://nuxtjs.org/guide/vuex-store).
 :::
-
-Finally, if you need IE11 support, you will need to transpile `nanoid`, a dependency of `@nuxtjs/auth`. Add the following to your `nuxt.config.js`:
-
-```js
-  build: {
-    transpile: [/^nanoid/]
-  },
-```

lib/module/index.js

@@ -35,6 +35,9 @@ module.exports = function (moduleOptions) {
 
   // Copy plugin
   copyPlugin.call(this, { options, strategies, strategyScheme })
+
+  // Transpile nanoid (used for oauth2) for IE11 support (#472)
+  this.options.build.transpile.push(/^nanoid/)
 }
 
 function validateOptions (options) {