Remove underscore from client bundle

package.js

@@ -22,7 +22,6 @@ Package.onUse(function onUse(api) {
     api.versionsFrom('1.4');
     api.use('isobuild:compiler-plugin@1.0.0');
     api.use('ecmascript');
-    api.use('underscore');
     api.use('omega:direct-stream-access@=4.0.3');
 
     api.addFiles([

src/lib/common.js

@@ -56,7 +56,7 @@ CustomProtocolCommon = class CustomProtocolCommon {
             throw new Error('Custom protocol must have an this._id lower than 127');
         }
 
-        _.extend(this._options, options);
+        Object.assign(this._options, options);
 
         CustomProtocolCore.registerProtocol(this._id, this._options, this);
 

src/utils/DynamicMessagesProtocol.js

@@ -105,7 +105,7 @@ DynamicMessagesProtocol = class DynamicMessagesProtocol extends CustomProtocol {
                 'type field name with setTypeField method.');
         }
         this._typeObject[this._typeFieldName] = messageType;
-        super.send(0, _.extend(this._typeObject, payload), target, deferred);
+        super.send(0,  Object.assign(this._typeObject, payload), target, deferred);
     }
 };