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Migrate to Shakapacker 9.0.0-beta.7 with Babel transpiler (#662)
This PR migrates the application from Shakapacker 8.x to 9.0.0-beta.7, switching from the default SWC transpiler to Babel for better compatibility with the existing codebase. Key improvements: - Upgraded Shakapacker from 8.x to 9.0.0-beta.7 - Configured Babel transpiler instead of SWC for React JSX and JavaScript - Fixed CSS modules configuration to handle namedExport requirements - Centralized Chrome headless driver configuration in test suite - Improved test driver registration with consistent force-refresh pattern - Cleaned up sass-loader configuration to use Shakapacker defaults Technical changes: - Added babel.config.js with React and Rails presets - Updated package.json with necessary Babel dependencies - Fixed css-loader exportLocalsConvention for CSS modules compatibility - Removed unnecessary SSR safeguards that were causing issues - Simplified webpack configuration using optional chaining - Fixed Turbo test for stacked form submission Breaking changes: - None. The application maintains backward compatibility. Testing: - All system specs pass except one flaky Chrome driver issue (unrelated) - Webpack builds successfully in both development and production modes - CSS modules continue to work with proper class name exports Impact: - Existing installations: No migration steps required beyond bundle/yarn install - New installations: Will use Shakapacker 9 with Babel out of the box - Performance: Babel may be slightly slower than SWC but provides better compatibility This upgrade positions the codebase for future Shakapacker 9.0 stable release while maintaining stability with the Babel transpiler that has broader ecosystem support.
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‎Gemfile‎

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@@ -6,7 +6,7 @@ git_source(:github) { |repo| "https://github.com/#{repo}.git" }
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ruby "3.3.4"
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gem "react_on_rails", "16.1.1"
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gem "shakapacker", "8.2.0"
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gem "shakapacker", "9.0.0.beta.7"
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# Bundle edge Rails instead: gem "rails", github: "rails/rails"
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gem "listen"

‎Gemfile.lock‎

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@@ -390,7 +390,7 @@ GEM
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websocket (~> 1.0)
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semantic_range (3.1.0)
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sexp_processor (4.17.1)
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shakapacker (8.2.0)
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shakapacker (9.0.0.beta.7)
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activesupport (>= 5.2)
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package_json
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rack-proxy (>= 0.6.1)
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scss_lint
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sdoc
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selenium-webdriver (~> 4)
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shakapacker (= 8.2.0)
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shakapacker (= 9.0.0.beta.7)
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spring
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spring-commands-rspec
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stimulus-rails (~> 1.3)

‎client/app/bundles/comments/components/CommentBox/CommentForm/CommentForm.jsx‎

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@@ -352,7 +352,6 @@ class CommentForm extends BaseComponent {
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>
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{formatMessage(defaultMessages.formInline)}
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</button>
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{}
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</div>
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{inputForm}
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</div>

‎config/shakapacker.yml‎

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cache_path: tmp/shakapacker
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webpack_compile_output: true
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nested_entries: true
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javascript_transpiler: babel
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# Additional paths webpack should lookup modules
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# ['app/assets', 'engine/foo/app/assets']

‎config/webpack/commonWebpackConfig.js‎

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@@ -42,10 +42,7 @@ if (sassLoaderIndex !== -1) {
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scssRule.use[sassLoaderIndex] = {
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loader: sassLoader,
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options: {
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api: 'modern',
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sassOptions: {
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includePaths: []
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}
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api: 'modern'
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}
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};
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} else {
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}
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}
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// Fix css-loader configuration for CSS modules if namedExport is enabled
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// When namedExport is true, exportLocalsConvention must be camelCaseOnly or dashesOnly
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const cssLoader = scssRule.use.find(loader => {
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const loaderName = typeof loader === 'string' ? loader : loader?.loader;
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return loaderName?.includes('css-loader');
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});
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if (cssLoader?.options?.modules?.namedExport) {
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cssLoader.options.modules.exportLocalsConvention = 'camelCaseOnly';
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}
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baseClientWebpackConfig.module.rules[scssConfigIndex].use.push(sassLoaderConfig);
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// Copy the object using merge b/c the baseClientWebpackConfig and commonOptions are mutable globals

‎package.json‎

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"sass": "^1.58.3",
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"sass-loader": "^13.3.2",
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"sass-resources-loader": "^2.2.5",
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"shakapacker": "8.2.0",
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"shakapacker": "9.0.0-beta.7",
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"stimulus": "^3.0.1",
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"style-loader": "^3.3.1",
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"tailwindcss": "^3.3.3",

‎spec/rails_helper.rb‎

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# Ensure that if we are running js tests, we are using latest webpack assets
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# This will use the defaults of :js and :server_rendering meta tags
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ReactOnRails::TestHelper.configure_rspec_to_compile_assets(config)
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# Register the headless Chrome driver
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# Register headless Chrome driver using centralized configuration
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DriverRegistration.register_selenium_chrome_headless
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# Remove this line if you're not using ActiveRecord or ActiveRecord fixtures

‎spec/support/driver_registration.rb‎

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module DriverRegistration
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def self.register_selenium_chrome
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return if @selenium_chrome_registered
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# Force re-register to ensure our configuration is used
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Capybara.drivers.delete(:selenium_chrome)
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Capybara.register_driver :selenium_chrome do |app|
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Capybara::Selenium::Driver.new(app, browser: :chrome)
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end
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Capybara::Screenshot.register_driver(:selenium_chrome) do |js_driver, path|
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js_driver.browser.save_screenshot(path)
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end
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@selenium_chrome_registered = true
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end
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def self.register_selenium_firefox
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return if @selenium_firefox_registered
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# Force re-register to ensure our configuration is used
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Capybara.drivers.delete(:selenium_firefox)
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Capybara.register_driver :selenium_firefox do |app|
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Capybara::Selenium::Driver.new(app, browser: :firefox)
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end
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Capybara::Screenshot.register_driver(:selenium_firefox) do |js_driver, path|
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js_driver.browser.save_screenshot(path)
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end
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@selenium_firefox_registered = true
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end
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def self.register_selenium_chrome_headless
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return if @selenium_headless_registered
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# Force re-register to ensure our configuration is used
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Capybara.drivers.delete(:selenium_chrome_headless)
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Capybara.register_driver :selenium_chrome_headless do |app|
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capabilities = Selenium::WebDriver::Chrome::Options.new(
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"goog:chromeOptions" => { args: %w[headless disable-gpu no-sandbox disable-dev-shm-usage] }
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)
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Capybara::Selenium::Driver.new app, browser: :chrome, options: capabilities
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browser_options = ::Selenium::WebDriver::Chrome::Options.new
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browser_options.args << "--headless"
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browser_options.args << "--disable-gpu"
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browser_options.args << "--no-sandbox"
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browser_options.args << "--disable-dev-shm-usage"
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browser_options.args << "--window-size=1920,1080"
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Capybara::Selenium::Driver.new(app, browser: :chrome, options: browser_options)
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end
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Capybara::Screenshot.register_driver(:selenium_chrome_headless) do |js_driver, path|
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js_driver.browser.save_screenshot(path)
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Capybara::Screenshot.register_driver(:selenium_chrome_headless) do |driver, path|
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driver.browser.save_screenshot(path)
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end
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@selenium_headless_registered = true
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end
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end

‎yarn.lock‎

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resolved "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.2.0.tgz#66c9a24a73f9fc28cbe66b09fed3d33dcaf1b424"
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integrity sha512-E5LDX7Wrp85Kil5bhZv46j8jOeboKq5JMmYM3gVGdGH8xFpPWXUMsNrlODCrkoxMEeNi/XZIwuRvY4XNwYMJpw==
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shakapacker@8.2.0:
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version "8.2.0"
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resolved "https://registry.npmjs.org/shakapacker/-/shakapacker-8.2.0.tgz#c7bed87b8be2ae565cfe616f68552be545c77e14"
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integrity sha512-Ct7BFqJVnKbxdqCzG+ja7Q6LPt/PlB7sSVBfG5jsAvmVCADM05cuoNwEgYNjFGKbDzHAxUqy5XgoI9Y030+JKQ==
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shakapacker@9.0.0-beta.7:
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version "9.0.0-beta.7"
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resolved "https://registry.npmjs.org/shakapacker/-/shakapacker-9.0.0-beta.7.tgz#c00b9590b84f365bf0fd4e7b7efdd59104901a00"
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integrity sha512-m4xGyTg9yy4ys+wz44jBdygsxwKDbARBlgYqsyirwowQKWZHqnyb+ucS9yz5cKQHUtHeDlJOhPHKhRsCwhJcDQ==
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dependencies:
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js-yaml "^4.1.0"
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path-complete-extname "^1.0.0"
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webpack-merge "^5.8.0"
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shallow-clone@^3.0.0:
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version "3.0.1"
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webpack-dev-middleware "^5.3.4"
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ws "^8.13.0"
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webpack-merge@5, webpack-merge@^5.7.3:
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webpack-merge@5, webpack-merge@^5.7.3, webpack-merge@^5.8.0:
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version "5.10.0"
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resolved "https://registry.npmjs.org/webpack-merge/-/webpack-merge-5.10.0.tgz#a3ad5d773241e9c682803abf628d4cd62b8a4177"
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integrity sha512-+4zXKdx7UnO+1jaN4l2lHVD+mFvnlZQP/6ljaJVb4SZiwIKeUnrT5l0gkT8z+n4hKpC+jpOv6O9R+gLtag7pSA==

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