Update code base based on sp7 (#1285)

* Remove the function to correct misconfiguration in webpacker.yml

* Update the codebase based on Shakapacker

* Update dependencies

* Update tests

* Update ujs

* Fix webpackConfig import

* Update Changelog

* Update missing shakapacker spelling change

* Remove bundle config

* Remove unneeded test for `data-reactroot`

This is an internal attribute of React and it is removed since React 16.
Despite this, it gets added in some cases, specially when we use the
bundled react with Sprocket. We don't need to depend our tests on the
existance of such attributes

* Update yarn.lock in dummy app

Author: ahangarha

Diff for: Appraisals

@@ -16,7 +16,7 @@ end
 
 appraise 'shakapacker' do
   gem 'rails', '~> 7.0.x'
-  gem 'shakapacker', '6.6.0'
+  gem 'shakapacker', '7.0.2'
 end
 
 appraise 'base' do

Diff for: CHANGELOG.md

@@ -10,11 +10,12 @@ Changes since last non-beta release.
 _Please add entries here for your pull requests that are not yet released._
 
 ### Breaking Changes
-- Remove support & testing for Webpacker 3/4.
-- Add support & testing for Shakapacker v6
-- Requires separate compilations for server & client bundles (see [Webpack config](https://github.com/reactjs/react-rails/tree/master/test/dummy/config/webpack))
-- Replaces WebpackManifestContainer, which searched for assets in the webpack manifest, with SeparateServerBundleContainer, which expects a single server bundle file & does not use the webpack manifest at all.
-- All in one PR! #1274
+- Remove support & testing for Webpacker 3 and 4 #1274
+- Requires separate compilations for server & client bundles (see [Webpack config](https://github.com/reactjs/react-rails/tree/master/test/dummy/config/webpack)) #1274
+- Replaces WebpackManifestContainer, which searched for assets in the webpack manifest, with SeparateServerBundleContainer, which expects a single server bundle file & does not use the webpack manifest at all. #1274
+
+### Added
+- Add support & testing for Shakapacker 7 #1274 and #1285
 
 #### Changed
 - The `react:component` generator now generates a function component by default #1271

Diff for: README.md

@@ -12,7 +12,7 @@ For version 2.7 documentation checkout [2.7-stable](https://github.com/reactjs/r
 ## Summary
 React-Rails is a flexible tool to use [React](http://facebook.github.io/react/) with Rails. The benefits:
 * Automatically renders React server-side and client-side
-* Supports [Shakapacker](https://github.com/shakacode/shakapacker) v6.x
+* Supports [Shakapacker](https://github.com/shakacode/shakapacker) v7
 * Supports Sprockets 4.x, 3.x
 * Lets you use [JSX](http://facebook.github.io/react/docs/jsx-in-depth.html), [ES6](http://es6-features.org/), [TypeScript](https://www.typescriptlang.org/), [CoffeeScript](http://coffeescript.org/)
 
@@ -92,20 +92,20 @@ _Alternatively, get started with [Sprockets](#use-with-asset-pipeline)_
 Prevent installing default javascript dependencies by using `--skip-javascript` option:
 
 ```bash
-$ rails new my-app --skip-javascript
-$ cd my-app
+rails new my-app --skip-javascript
+cd my-app
 ```
 
 2. Install `shakapacker`:
 ```bash
-$ bundle add shakapacker --strict
-$ rails webpacker:install
+bundle add shakapacker --strict
+rails shakapacker:install
 ```
 
 3. Install `react` and some other required npm packages:
 ```bash
-$ yarn add react react-dom @babel/preset-react prop-types \
-  css-loader style-loader mini-css-extract-plugin css-minimizer-webpack-plugin
+yarn add react react-dom @babel/preset-react prop-types \
+     css-loader style-loader mini-css-extract-plugin css-minimizer-webpack-plugin
 ```
 
 Also update the Babel configuration in the `package.json` file:
@@ -169,7 +169,7 @@ Output: greeting: Hello from react-rails", inspect webpage in your browser to se
 In order to run dev server with HMR feature you need to parallely run:
 
 ```bash
-$ ./bin/webpacker-dev-server
+$ ./bin/shakapacker-dev-server
 ```
 
 Note: On Rails 6 you need to specify `webpack-dev-server` host. To this end, update `config/initializers/content_security_policy.rb` and uncomment relevant lines.
@@ -780,7 +780,7 @@ For example, to change the [ES6 Component template](https://github.com/reactjs/r
 
 ### 2.7 to 3.0
 - Keep your `react_ujs` up to date: `yarn upgrade`
-- **Drop support for Webpacker:** Before any ReactRails upgrade, make sure upgrading from Webpacker to Shakapacker 6.x.
+- **Drop support for Webpacker:** Before any ReactRails upgrade, make sure upgrading from Webpacker to Shakapacker 7. For more information check out Shakapacker  
 - **SSR:** ReactRails 3.x requires separate compilations for server & client bundles. See [Webpack config](https://github.com/reactjs/react-rails/tree/master/test/dummy/config/webpack) directory in the dummy app to addapt the new implementation.
 
 ### 2.3 to 2.4

Diff for: gemfiles/base.gemfile.lock

@@ -173,6 +173,8 @@ GEM
       racc (~> 1.4)
     nokogiri (1.13.8-x86_64-linux)
       racc (~> 1.4)
+    nokogiri (1.13.8-x86_64-linux)
+      racc (~> 1.4)
     notiffany (0.1.3)
       nenv (~> 0.1)
       shellany (~> 0.0)

Diff for: gemfiles/shakapacker.gemfile

@@ -3,6 +3,6 @@
 source "http://rubygems.org"
 
 gem "rails", "~> 7.0.x"
-gem "shakapacker", "6.6.0"
+gem "shakapacker", "7.0.2"
 
 gemspec path: "../"

Diff for: gemfiles/shakapacker.gemfile.lock

@@ -227,7 +227,7 @@ GEM
       rubyzip (>= 1.2.2, < 3.0)
       websocket (~> 1.0)
     semantic_range (3.0.0)
-    shakapacker (6.6.0)
+    shakapacker (7.0.2)
       activesupport (>= 5.2)
       rack-proxy (>= 0.6.1)
       railties (>= 5.2)
@@ -276,7 +276,7 @@ DEPENDENCIES
   rails (~> 7.0.x)
   react-rails!
   selenium-webdriver
-  shakapacker (= 6.6.0)
+  shakapacker (= 7.0.2)
   test-unit (~> 2.5)
   webdrivers