Class: Brut::CLI::Apps::BuildAssets::Js

Inherits:

BaseCommand

• Object
• Commands::BaseCommand
• BaseCommand
• Brut::CLI::Apps::BuildAssets::Js

Defined in:

lib/brut/cli/apps/build_assets.rb

Instance Attribute Summary

Attributes inherited from Commands::BaseCommand

#parent_command

Instance Method Summary

• #description ⇒ Object
• #opts ⇒ Object
• #run ⇒ Object

Methods inherited from BaseCommand

#bootstrap?, #default_rack_env, #friendly_name

Methods inherited from Commands::BaseCommand

#accepts, #args_description, #argv, #bootstrap?, #commands, #default_rack_env, #delegate_to_command, #detailed_description, #env, #env_vars, #execute, #name, #options, #puts, #stdin, #system!, #theme

Instance Method Details

#description ⇒ Object

# File 'lib/brut/cli/apps/build_assets.rb', line 135

def description = "Builds and bundles JavaScript destined for the browser"

#opts ⇒ Object

# File 'lib/brut/cli/apps/build_assets.rb', line 136

def opts = super + [
  [
    "--output-file=FILE",
    "Bundle to create that will be sent to the browser, relative to the JS public folder. Default is app.js",
  ],
  [
    "--source-file=FILE",
    "Entry point used to create the bundle, relative to the source JS folder. Default is index.js",
  ],
]

#run ⇒ Object

# File 'lib/brut/cli/apps/build_assets.rb', line 147

def run
  js_bundle           = Brut.container.js_bundle_output_dir / options.output_file(default: "app.js")
  js_bundle_source    = Brut.container.front_end_src_dir /  "js" / options.source_file(default: "index.js")
  esbuild_metafile    = Brut.container.tmp_dir / "build-js-meta.json"
  asset_metadata_file = Brut.container.asset_metadata_file

  name_with_hash_regexp = /app\/public\/(?<path>.+)\/(?<name>.+)\-(?<hash>.+)\.js/
  if options.clean?(default: options.env != "production")
    puts "Cleaning old JS files from #{friendly_name(Brut.container.js_bundle_output_dir)}"
    Dir[Brut.container.js_bundle_output_dir / "*.*"].each do |file|
      if File.file?(file)
        puts theme.weak.render("  Deleting #{theme.code.render(friendly_name(file))}")
        FileUtils.rm(file)
      end
    end
  end

  # NOTE: esbuild outputs its normal messages on stderr which is fucking stupid
  command = "npx esbuild --metafile=#{esbuild_metafile} --entry-names=[name]-[hash] --sourcemap --bundle #{js_bundle_source} --outfile=#{js_bundle} 2>&1"
  puts "Building JS bundle '#{theme.code.render(friendly_name(js_bundle))}'"
  system!(command)

  if !File.exist?(esbuild_metafile)
    error "'#{esbuild_metafile}' was not generated - cannot continue"
    return 1
  end

  asset_metadata = Brut::FrontEnd::AssetMetadata.new(asset_metadata_file:,logger: execution_context.logger)
  asset_metadata.merge!(extension: ".js", esbuild_metafile:)
  asset_metadata.save!
  0
end