discourse/config/initializers/assets.rb

# frozen_string_literal: true

# Be sure to restart your server when you modify this file.

# Enable the asset pipeline
Rails.application.config.assets.enabled = true

# Version of your assets, change this if you want to expire all your assets.
Rails.application.config.assets.version = "2"

# Add additional assets to the asset load path.
Rails.application.config.assets.paths << "#{Rails.root}/config/locales"
Rails.application.config.assets.paths << "#{Rails.root}/public/javascripts"

# Precompile additional assets.
# application.js, application.css, and all non-JS/CSS in the app/assets
# folder are already added.

# explicitly precompile any images in plugins ( /assets/images ) path
Rails.application.config.assets.precompile += [
  lambda do |filename, path|
    path =~ %r{assets/images} && !%w[.js .css].include?(File.extname(filename))
  end,
]

Rails.application.config.assets.precompile += %w[
  discourse.js
  vendor.js
  admin.js
  wizard.js
  test-support.js
  test-helpers.js
  test-site-settings.js
  browser-detect.js
  browser-update.js
  break_string.js
  markdown-it-bundle.js
  service-worker.js
  google-tag-manager.js
  google-universal-analytics-v3.js
  google-universal-analytics-v4.js
  start-discourse.js
  print-page.js
  activate-account.js
  auto-redirect.js
  locales/i18n.js
  discourse/app/lib/webauthn.js
  confirm-new-email/confirm-new-email.js
  confirm-new-email/bootstrap.js
  onpopstate-handler.js
  embed-application.js
  scripts/discourse-test-listen-boot
  scripts/discourse-boot
  workbox-*/*
]

Rails.application.config.assets.precompile += EmberCli.assets.map { |name| name.sub(".js", ".map") }

# Precompile all available locales
unless GlobalSetting.try(:omit_base_locales)
  Dir
    .glob("#{Rails.root}/app/assets/javascripts/locales/*.js.erb")
    .each do |file|
      Rails
        .application
        .config
        .assets
        .precompile << "locales/#{file.match(/([a-z_A-Z]+\.js)\.erb$/)[1]}"
    end
end

# out of the box sprockets 3 grabs loose files that are hanging in assets,
# the exclusion list does not include hbs so you double compile all this stuff
Rails.application.config.assets.precompile.delete(Sprockets::Railtie::LOOSE_APP_ASSETS)

# We don't want application from node_modules, only from the root
Rails.application.config.assets.precompile.delete(%r{(?:/|\\|\A)application\.(css|js)$})
Rails.application.config.assets.precompile += ["application.js"]

start_path = ::Rails.root.join("app/assets").to_s
exclude = [".es6", ".hbs", ".hbr", ".js", ".css", ".lock", ".json", ".log", ".html", ""]
Rails.application.config.assets.precompile << lambda do |logical_path, filename|
  filename.start_with?(start_path) && !filename.include?("/node_modules/") &&
    !filename.include?("/dist/") && !filename.include?("/patches/") &&
    !exclude.include?(File.extname(logical_path))
end

Discourse
  .find_plugin_js_assets(include_disabled: true)
  .each { |file| Rails.application.config.assets.precompile << "#{file}.js" }