fix: 修复一些问题

Author: zyao89

src/extends/unified/app.js

@@ -90,9 +90,17 @@ module.exports = function unifiedExtend(api, opts) {
                         });
                     }
 
-                    webpackChain
-                        .plugin(pname)
-                        .use(HTMLPlugin, [ htmlOpts ]);
+                    if (!webpackChain.plugins.has(pname)) {
+                        webpackChain
+                            .plugin(pname)
+                            .use(HTMLPlugin, [ htmlOpts ]);
+                    } else {
+                        webpackChain
+                            .plugin(pname)
+                            .tap(args => {
+                                return [ Object.assign({}, args[0] || {}, htmlOpts) ];
+                            });
+                    }
                 });
             } else {
                 api.logger.warn('[webpack]', 'Not Found "html-webpack-plugin"');

src/extends/unified/rules.js

@@ -32,6 +32,7 @@ module.exports = function unifiedExtend(api, opts) {
                     loader: require.resolve('file-loader'),
                     options: {
                         name: genAssetSubPath(dir),
+                        esModule: false,
                     },
                 },
             };
@@ -42,7 +43,7 @@ module.exports = function unifiedExtend(api, opts) {
             .test(/\.(png|jpe?g|gif|webp)(\?.*)?$/)
             .use('url-loader')
             .loader(require.resolve('url-loader'))
-            .options(genUrlLoaderOptions('images'));
+            .options(genUrlLoaderOptions('img'));
 
 
         // do not base64-inline SVGs.