Split utils functions into set of helper modules

tests/Helpers/ConvertTest.ts

@@ -0,0 +1,39 @@
+import { it, describe } from 'mocha';
+import { expect } from 'chai';
+import { elClassId, getNumber } from '../../src/Helpers/Convert';
+
+describe('Utils', function() {
+    describe('getNumber', function() {
+        it('Can parse positive number', function() {
+            const text = '123';
+            expect(getNumber(text)).to.be.equals(123);
+        });
+
+        it('Can parse positive number with noise', function() {
+            const text = '  123 ';
+            expect(getNumber(text)).to.be.equals(123);
+        });
+
+        it('Can parse negative number', function() {
+            const text = '-‭146';
+            expect(getNumber(text)).to.be.equals(-146);
+        });
+
+        it('Can parse negative number with minus sign', function() {
+            const text = '\u2212132';
+            expect(getNumber(text)).to.be.equals(-132);
+        });
+    });
+
+    describe('elClassId', function() {
+        it('Can parse number with prefix', function() {
+            const text = 'foo bar12 baz';
+            expect(elClassId(text, 'bar')).to.be.equals(12);
+        });
+
+        it('Can parse number from parts with same prefix', function() {
+            const text = 'foo12 foobar';
+            expect(elClassId(text, 'foo')).to.be.equals(12);
+        });
+    });
+});