feat: add possibility to extend default minimize options

Author: fretfan

README.md

@@ -534,7 +534,7 @@ module.exports = {
 
 See [html-minifier-terser](https://github.com/DanielRuf/html-minifier-terser)'s documentation for more information on the available options.
 
-The rules can be disabled using the following options in your `webpack.conf.js`
+The default rules can be overridden using the following options in your `webpack.conf.js`
 
 **webpack.config.js**
 
@@ -556,7 +556,31 @@ module.exports = {
   },
 };
 ```
+The default rules can be extended:
 
+**webpack.config.js**
+
+```js
+const defaultMinimizerOptions = require('html-loader/dist/utils').defaultMinimizerOptions;
+
+module.exports = {
+  module: {
+    rules: [
+      {
+        test: /\.html$/i,
+        loader: "html-loader",
+        options: {
+          minimize: {
+            ...defaultMinimizerOptions,
+            removeComments: false,
+            collapseWhitespace: false,
+          },
+        },
+      },
+    ],
+  },
+};
+```
 ### `esModule`
 
 Type: `Boolean`

src/utils.js

@@ -496,7 +496,7 @@ function isProductionMode(loaderContext) {
   return loaderContext.mode === "production" || !loaderContext.mode;
 }
 
-const defaultMinimizerOptions = {
+export const defaultMinimizerOptions = {
   caseSensitive: true,
   // `collapseBooleanAttributes` is not always safe, since this can break CSS attribute selectors and not safe for XHTML
   collapseWhitespace: true,