set up unit testing

Author: matas-bitbybit-dev

.gitignore

@@ -9,3 +9,4 @@ csg-generated.js
 *.d.ts
 !bitbybit-dev-occt.d.ts
 ts-doc-theme
+coverage

src/babel.config.js

@@ -0,0 +1,13 @@
+module.exports = {
+    presets: [
+        [
+            '@babel/preset-env',
+            {
+                targets: {
+                    node: 'current',
+                },
+            },
+        ],
+        '@babel/preset-typescript'
+    ],
+};