fix: add warning when used with asset modules

https://webpack.js.org/guides/asset-modules/

Pushing loaders to asset modules causes them to silently fail

Author: KaelWD

lib/plugin.js

@@ -34,10 +34,18 @@ class VuetifyLoaderPlugin {
             resource.query === resourceQuery &&
             ['.png', '.jpg', '.jpeg', '.webp', '.gif'].includes(path.extname(resource.pathname))
           ) {
-            module.loaders.unshift({
-              loader: require.resolve('vuetify-loader/progressive-loader'),
-              options
-            })
+            if (/^asset\/?/.test(module.type)) {
+              compilation.errors.push(new Error(
+                'vuetify-loader: progressiveImages does not work with asset modules, use file-loader or url-loader\n' +
+                `"${module.rawRequest}" will be loaded normally\n` +
+                'See https://webpack.js.org/guides/asset-modules/'
+              ))
+            } else {
+              module.loaders.unshift({
+                loader: require.resolve('vuetify-loader/progressive-loader'),
+                options
+              })
+            }
           }
         })
       })