upgrading dependencies, fixing immowelt, using hash of price and id as unique identifier for listings

test/utils/utils.test.js

@@ -0,0 +1,16 @@
+import { expect } from 'chai';
+import {buildHash} from '../../lib/utils.js';
+
+describe('utilsCheck', () => {
+  describe('#utilsCheck()', () => {
+      it('should be null when null input', () => {
+          expect(buildHash(null)).to.be.null;
+      });
+      it('should be null when null empty', () => {
+          expect(buildHash('')).to.be.null;
+      });
+      it('should return a value', () => {
+          expect(buildHash('bla', '', null)).to.be.a.string;
+      });
+  });
+});