Fix: Ignore mini-html-webpack-plugin (styleguidist#938)

Fixes styleguidist#937

Author: okonet

docs/Configuration.md

@@ -664,7 +664,7 @@ module.exports = {
 
 > **Note:** `entry`, `externals`, `output`, `watch`, and `stats` options will be ignored. For production builds, `devtool` will also be ignored.
 
-> **Note:** `CommonsChunkPlugins`, `HtmlWebpackPlugin`, `UglifyJsPlugin`, `HotModuleReplacementPlugin` plugins will be ignored because Styleguidist already includes them or they may break Styleguidist.
+> **Note:** `CommonsChunkPlugins`, `HtmlWebpackPlugin`, `MiniHtmlWebpackPlugin`, `UglifyJsPlugin`, `HotModuleReplacementPlugin` plugins will be ignored because Styleguidist already includes them or they may break Styleguidist.
 
 > **Note:** Run style guide in verbose mode to see the actual webpack config used by Styleguidist: `npx styleguidist server --verbose`.
 

docs/Webpack.md

@@ -43,7 +43,7 @@ module.exports = {
 
 > **Note:** `entry`, `externals`, `output`, `watch`, and `stats` options will be ignored. For production builds, `devtool` will also be ignored.
 
-> **Note:** `CommonsChunkPlugins`, `HtmlWebpackPlugin`, `UglifyJsPlugin`, `HotModuleReplacementPlugin` plugins will be ignored because Styleguidist already includes them or they may break Styleguidist.
+> **Note:** `CommonsChunkPlugins`, `HtmlWebpackPlugin`, `MiniHtmlWebpackPlugin`, `UglifyJsPlugin`, `HotModuleReplacementPlugin` plugins will be ignored because Styleguidist already includes them or they may break Styleguidist.
 
 > **Note:** If your loaders don’t work with Styleguidist try to make `include` and `exclude` absolute paths.
 
@@ -81,7 +81,7 @@ module.exports = {
 
 > **Note:** `entry`, `externals`, `output`, `watch`, and `stats` options will be ignored. For production builds, `devtool` will also be ignored.
 
-> **Note:** `CommonsChunkPlugins`, `HtmlWebpackPlugin`, `UglifyJsPlugin`, `HotModuleReplacementPlugin` plugins will be ignored because Styleguidist already includes them or they may break Styleguidist.
+> **Note:** `CommonsChunkPlugins`, `HtmlWebpackPlugin`, `MiniHtmlWebpackPlugin`, `UglifyJsPlugin`, `HotModuleReplacementPlugin` plugins will be ignored because Styleguidist already includes them or they may break Styleguidist.
 
 ## Create React App
 

scripts/utils/__tests__/mergeWebpackConfig.spec.js

@@ -2,6 +2,7 @@ import mergeWebpackConfig from '../mergeWebpackConfig';
 
 class UglifyJsPlugin {}
 class MyPlugin {}
+class MiniHtmlWebpackPlugin {}
 
 it('should merge two objects', () => {
 	const result = mergeWebpackConfig({ a: 0, b: 0 }, { b: 1 });
@@ -26,15 +27,18 @@ it('should ignore certain sections', () => {
 });
 
 it('should ignore certain Webpack plugins', () => {
+	const baseInstance = new UglifyJsPlugin();
+	const userInstance = new UglifyJsPlugin();
 	const result = mergeWebpackConfig(
 		{
-			plugins: [new UglifyJsPlugin()],
+			plugins: [baseInstance],
 		},
 		{
-			plugins: [new UglifyJsPlugin(), new MyPlugin()],
+			plugins: [userInstance, new MyPlugin(), new MiniHtmlWebpackPlugin()],
 		}
 	);
 	expect(result.plugins).toHaveLength(2);
+	expect(result.plugins[0]).toBe(baseInstance);
 	expect(result.plugins[0].constructor.name).toBe('UglifyJsPlugin');
 	expect(result.plugins[1].constructor.name).toBe('MyPlugin');
 });

scripts/utils/mergeWebpackConfig.js

@@ -12,6 +12,7 @@ const IGNORE_SECTIONS_ENV = {
 
 const IGNORE_PLUGINS = [
 	'CommonsChunkPlugins',
+	'MiniHtmlWebpackPlugin',
 	'HtmlWebpackPlugin',
 	'OccurrenceOrderPlugin',
 	'DedupePlugin',