Fixing the error object inheritence

lib/errors.js

@@ -4,7 +4,6 @@
  * @fileOverview The Error Objects produced by Sequelize.
  */
 
-var util = require('util');
 var error = module.exports = {};
 
 /**
@@ -13,9 +12,17 @@ var error = module.exports = {};
  * @constructor
  */
 error.BaseError = function() {
-  Error.apply(this, arguments);
+  var tmp = Error.apply(this, arguments);
+  tmp.name = this.name = 'SequelizeBaseError';
+
+  this.stack = tmp.stack;
+  this.message = tmp.message;
+
+  return this;
 };
-util.inherits(error.BaseError, Error);
+error.BaseError.prototype = Object.create(Error.prototype, {
+  constructor: { value: error.BaseError }
+});
 
 
 /**
@@ -25,5 +32,10 @@ util.inherits(error.BaseError, Error);
  */
 error.ValidationError = function() {
   error.BaseError.apply(this, arguments);
+  this.name = 'SequelizeValidationError';
+
+  return this;
 };
-util.inherits(error.ValidationError, error.BaseError);
+error.ValidationError.prototype = Object.create(error.BaseError.prototype, {
+  constructor: { value: error.ValidationError }
+});
\ No newline at end of file

test/error.test.js

@@ -2,20 +2,19 @@
 var chai      = require('chai')
   , expect    = chai.expect
   , Support   = require(__dirname + '/support')
-  , Sequelize = Support.Sequelize
-  // , sinon     = require('sinon')
+  , Sequelize = Support.Sequelize;
 
-chai.config.includeStack = true
+chai.config.includeStack = true;
 
 describe(Support.getTestDialectTeaser("Sequelize Errors"), function () {
   describe('API Surface', function() {
     it('Should have the Error constructors exposed', function() {
-      expect(Sequelize).to.have.property('Error')
-      expect(Sequelize).to.have.property('ValidationError')
+      expect(Sequelize).to.have.property('Error');
+      expect(Sequelize).to.have.property('ValidationError');
       var sequelize = new Sequelize();
-      expect(sequelize).to.have.property('Error')
-      expect(sequelize).to.have.property('ValidationError')
-    })
+      expect(sequelize).to.have.property('Error');
+      expect(sequelize).to.have.property('ValidationError');
+    });
     it('Sequelize Errors instances should be instances of Error', function() {
       var error = new Sequelize.Error();
       var validationError = new Sequelize.ValidationError();
@@ -25,10 +24,12 @@ describe(Support.getTestDialectTeaser("Sequelize Errors"), function () {
       var instError = new sequelize.Error();
       var instValidationError = new sequelize.ValidationError();
 
-      expect(error).to.be.instanceOf(Error)
-      expect(validationError).to.be.instanceOf(Error)
-      expect(instError).to.be.instanceOf(Error)
-      expect(instValidationError).to.be.instanceOf(Error)
+      expect(error).to.be.instanceOf(Sequelize.Error);
+      expect(error).to.have.property('name', 'SequelizeBaseError');
+      expect(validationError).to.be.instanceOf(Sequelize.ValidationError);
+      expect(validationError).to.have.property('name', 'SequelizeValidationError');
+      expect(instError).to.be.instanceOf(Sequelize.Error);
+      expect(instValidationError).to.be.instanceOf(Sequelize.ValidationError);
     })
   })
-})
+});