Initial commit

test/core.spec.ts

@@ -0,0 +1,10 @@
+import { describe, expect, test } from '@jest/globals';
+import { id } from '../src/core';
+
+describe('id', () => {
+  test('returns same value', () => {
+    expect(id(null)).toBe(null);
+    expect(id(1)).toBe(1);
+    expect(id(global)).toBe(global);
+  });
+});