why

Gemfile

@@ -66,6 +66,7 @@ group :development do
   gem 'capistrano-passenger'
   gem 'capistrano-rails'
   gem 'capistrano-rbenv'
+  gem 'ed25519'
   gem 'letter_opener'
   gem 'rbnacl', '< 5.0'
   gem 'rubocop'

Gemfile.lock

@@ -102,6 +102,7 @@ GEM
     dotenv-rails (2.7.2)
       dotenv (= 2.7.2)
       railties (>= 3.2, < 6.1)
+    ed25519 (1.2.4)
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
@@ -347,6 +348,7 @@ DEPENDENCIES
   carrierwave-i18n
   commonmarker
   dotenv-rails
+  ed25519
   email_address
   exception_notification
   font-awesome-rails

bin/yarn

@@ -1,11 +0,0 @@
-#!/usr/bin/env ruby
-# frozen_string_literal: true
-
-VENDOR_PATH = File.expand_path('..', __dir__)
-Dir.chdir(VENDOR_PATH) do
-  exec "yarnpkg #{ARGV.join(' ')}"
-rescue Errno::ENOENT
-  warn 'Yarn executable was not detected in the system.'
-  warn 'Download Yarn at https://yarnpkg.com/en/docs/install'
-  exit 1
-end