Honor the config.optsHtml option in HTMLGenerator

src/code_manager/model/HtmlGenerator.js

@@ -2,8 +2,8 @@ import { Model } from '../../common';
 
 export default class HTMLGenerator extends Model {
   build(model, opts = {}) {
-    const htmlOpts = {};
-    const { em } = opts;
+    const { em, ...restOpts } = opts;
+    const htmlOpts = restOpts;
 
     // Remove unnecessary IDs
     if (opts.cleanId && em) {
@@ -17,19 +17,21 @@ export default class HTMLGenerator extends Model {
         })
         .filter(i => i);
 
-      htmlOpts.attributes = (mod, attrs) => {
-        const { id } = attrs;
-        if (
-          id &&
-          id[0] === 'i' && // all autogenerated IDs start with 'i'
-          !mod.get('script') && // if the component has script, we have to leave the ID
-          !mod.get('attributes').id && // id is not intentionally in attributes
-          idRules.indexOf(id) < 0 // we shouldn't have any rule with this ID
-        ) {
-          delete attrs.id;
-        }
-        return attrs;
-      };
+      if (!htmlOpts.attributes) {
+        htmlOpts.attributes = (mod, attrs) => {
+          const { id } = attrs;
+          if (
+            id &&
+            id[0] === 'i' && // all autogenerated IDs start with 'i'
+            !mod.get('script') && // if the component has script, we have to leave the ID
+            !mod.get('attributes').id && // id is not intentionally in attributes
+            idRules.indexOf(id) < 0 // we shouldn't have any rule with this ID
+          ) {
+            delete attrs.id;
+          }
+          return attrs;
+        };
+      }
     }
 
     return model.toHTML(htmlOpts);