fix: register plugin on hook builder:extendPlugins

Author: ricardogobbosouza

lib/module.js

@@ -1,19 +1,23 @@
 const { resolve } = require('path')
 
 module.exports = function (moduleOptions) {
-  const options = {
-    authModule: false,
-    connectOnLogin: true,
-    disconnectOnLogout: true,
-    ...this.options.echo,
-    ...moduleOptions
-  }
+  this.nuxt.hook('builder:extendPlugins', (plugins) => {
+    const options = {
+      authModule: false,
+      connectOnLogin: true,
+      disconnectOnLogout: true,
+      ...this.options.echo,
+      ...moduleOptions
+    }
 
-  this.addPlugin({
-    ssr: false,
-    src: resolve(__dirname, 'plugin.js'),
-    fileName: 'echo.js',
-    options
+    const { dst } = this.addTemplate({
+      ssr: false,
+      src: resolve(__dirname, 'plugin.js'),
+      fileName: 'echo.js',
+      options
+    })
+
+    plugins.push(resolve(this.options.buildDir, dst))
   })
 }