Update bin/shakapacker to auto-generate (#1630)

Gemfile.development_dependencies

@@ -24,6 +24,7 @@ gem "amazing_print"
 
 group :development, :test do
   gem "listen"
+  gem "debug"
   gem "pry"
   gem "pry-byebug"
   gem "pry-doc"

spec/dummy/Gemfile.lock

@@ -118,6 +118,9 @@ GEM
       tins (~> 1.6)
     crass (1.0.6)
     date (3.3.4)
+    debug (1.9.2)
+      irb (~> 1.10)
+      reline (>= 0.3.8)
     diff-lcs (1.5.0)
     docile (1.4.0)
     drb (2.2.0)
@@ -390,6 +393,7 @@ DEPENDENCIES
   capybara
   capybara-screenshot
   coveralls
+  debug
   equivalent-xml
   generator_spec
   jbuilder

spec/dummy/Procfile.dev

@@ -2,7 +2,7 @@
 # You can run these commands in separate shells
 rails: bundle exec rails s -p 3000
 wp-client: bin/shakapacker-dev-server
-wp-server: SERVER_BUNDLE_ONLY=yes bin/shakapacker --watch
+wp-server: SERVER_BUNDLE_ONLY=true bin/shakapacker --watch
 
 # Bundle ReScript .res files
 rescript: yarn build:rescript:dev

spec/dummy/bin/shakapacker

@@ -9,6 +9,16 @@ ENV["RAILS_ENV"] ||= "development"
 ENV["NODE_ENV"]  ||= ENV["RAILS_ENV"]
 ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile", Pathname.new(__FILE__).realpath)
 
+require "rake"
+
+# Recommendation is to generate packs before compilation.
+# SERVER_BUNDLE_ONLY is true when also running the bin/shakapacker-dev-server,
+# so no need to run twice.
+unless ENV["SERVER_BUNDLE_ONLY"] == "true"
+  Rake.application.load_rakefile
+  Rake::Task["react_on_rails:generate_packs"].invoke
+end
+
 APP_ROOT = File.expand_path("..", __dir__)
 Dir.chdir(APP_ROOT) do
   Shakapacker::WebpackRunner.run(ARGV)

spec/dummy/bin/shakapacker-dev-server

@@ -12,6 +12,10 @@ require "bundler/setup"
 require "shakapacker"
 require "shakapacker/dev_server_runner"
 
+# Recommendation is to generate packs before compilation
+Rake.application.load_rakefile
+Rake::Task["react_on_rails:generate_packs"].invoke
+
 APP_ROOT = File.expand_path("..", __dir__)
 Dir.chdir(APP_ROOT) do
   Shakapacker::DevServerRunner.run(ARGV)