revert(lodash): revert switching to native version of defaults

Accidental commit

imports/infoitem.js

@@ -1,15 +1,15 @@
 /**
  * A InfoItem is a sub-element of
- * a topic which has a subject,
+ * a topic which has a subject,>
  * a date when is was created
  * and a list of associated tags.
  */
-import { User } from "/imports/user";
+import { _ } from "lodash";
 import { Meteor } from "meteor/meteor";
 import { Random } from "meteor/random";
-
-import { formatDateISO8601 } from "./helpers/date";
-import { StringUtils } from "./helpers/string-utils";
+import { formatDateISO8601 } from "./helpers/date.js";
+import { StringUtils } from "./helpers/string-utils.js";
+import { User } from "./user.js";
 
 /**
  * The InfoItem class represents an information item in a topic.
@@ -48,13 +48,12 @@ export class InfoItem {
     if (!Object.prototype.hasOwnProperty.call(source, "createdInMinute")) {
       throw new Meteor.Error("Property createdInMinute of topicDoc required");
     }
-    const defaultValues = {
+    _.defaults(source, {
       itemType: "infoItem",
       isNew: true,
       isSticky: false,
       labels: [],
-    };
-    this._infoItemDoc = Object.assign({}, defaultValues, source);
+    });
     this._infoItemDoc = source;
   }