wip: migrate to bun

test/assignIn.spec.ts

@@ -0,0 +1,9 @@
+import assert from 'node:assert';
+import extend from '../src/extend';
+import assignIn from '../src/assignIn';
+
+describe('assignIn', () => {
+    it('should be aliased', () => {
+        assert.strictEqual(extend, assignIn);
+    });
+});