feat(terminatedatabasesaftergenerate): added 'terminateDatabasesAfterGenerate' config

Added 'terminateDatabasesAfterGenerate' config to avoud nuxt generate warning

re #451

Author: lupas

.gitignore

@@ -11,3 +11,4 @@ dist
 yarn.lock
 !docs/yarn.lock
 sw.*
+.husky

docs/content/en/guide/options.md

@@ -162,4 +162,18 @@ You can either enabled lazy loading for all services or none.
 - Type: `Boolean` or `Object`
 - Default: `true`
 
-Whether to inject the entire [Firebase module](/guide/usage#firemodule) as `this.$fireModule` or not.
+Whether to inject the entire [Firebase module](/guide/usage#firemodule) as `this.$fireModule` or not.
+
+## terminateDatabasesAfterGenerate
+
+- Type: `Boolean`
+- Default: `false`
+
+Terminates the Firebase RealTime Database and Firestore after `nuxt generate` has been run. This fixes the below warning by Nuxt and speeds up generate time:
+
+> The command 'nuxt generate' finished but did not exit after 5s
+> This is most likely not caused by a bug in Nuxt
+> Make sure to cleanup all timers and listeners you or your plugins/modules start.
+> Nuxt will now force exit
+>
+> DeprecationWarning: Starting with Nuxt version 3 this will be a fatal error 

lib/module.js

@@ -70,6 +70,11 @@ module.exports = function (moduleOptions) {
   // add ssrAuth plugin last
   // so res object is augmented for other plugins of this module
   loadAuthPlugin()
+
+  // Terminate Database after Nuxt Generate
+  if (options.terminateDatabasesAfterGenerate) {
+    terminateDatabasesInGenerateHooks(this)
+  }
 }
 
 /**
@@ -303,6 +308,35 @@ function validateConfigKeys (options, currentEnv) {
   }
 }
 
+/**
+ * This makes sure nuxt generate does finish without running into a timeout issue.
+ * Might be able to remove this at some point (e.g. with Nuxt 3)
+ * See https://github.com/nuxt-community/firebase-module/issues/93
+ */
+function terminateDatabasesInGenerateHooks (ctx) {
+  const firebaseDir = ctx.nuxt.options.srcDir + '/node_modules/firebase/'
+  ctx.nuxt.hook('generate:before', async (generator) => {
+    const { default: firebase } = await import(firebaseDir + 'app')
+
+    if (!firebase.apps.length) {
+      firebase.initializeApp(generator.options.firebase.config)
+    }
+
+    generator.$fire = firebase.apps[0]
+  })
+  ctx.nuxt.hook('generate:done', async ({ $fire }) => {
+    // Terminate Databases
+    try {
+      await $fire.database().goOffline()
+      console.info('RealTime Database manually terminated.')
+    } catch (e) {}
+    try {
+      await $fire.firestore().terminate()
+      console.info('Firestore manually terminated.')
+    } catch (e) {}
+  })
+}
+
 function isEmpty (val) {
   return val == null || !(Object.keys(val) || val).length
 }

types/index.d.ts

@@ -138,6 +138,7 @@ export interface FirebaseModuleConfiguration {
   }
   customEnv?: boolean
   onFirebaseHosting?: boolean | object
+  terminateDatabasesAfterGenerate?: boolean
 }
 
 /***********************************