Refactor: Implement SmartCube renderer, improve UI styling, and fix gaps

node_modules/@gkucmierz/utils/spec/memoize.spec.mjs

@@ -0,0 +1,46 @@
+
+import {
+  memoize,
+} from '../src/memoize.mjs';
+
+describe('memoize', () => {
+  it('called once', () => {
+    let cnt = 0;
+    const add = memoize((a, b) => {
+      ++cnt;
+      return a + b;
+    });
+
+    expect(add(1, 2)).toBe(3);
+    expect(cnt).toBe(1);
+    expect(add(1, 2)).toBe(3);
+    expect(cnt).toBe(1);
+
+    expect(add(2, 1)).toBe(3);
+    expect(cnt).toBe(2);
+  });
+
+  it('variable args length', () => {
+    const fn = memoize((...args) => args.length);
+
+    expect(fn()).toBe(0);
+    expect(fn(1)).toBe(1);
+    expect(fn(1, 2)).toBe(2);
+    expect(fn(1, 2, 3)).toBe(3);
+  });
+
+  it('different empty object arrays', () => {
+    let cnt = 0;
+    const fn = memoize(() => ++cnt);
+    const emptyArr = [];
+    fn(emptyArr);
+    expect(cnt).toBe(1);
+    fn(emptyArr);
+    expect(cnt).toBe(1);
+    fn([]);
+    expect(cnt).toBe(2);
+    fn([]);
+    expect(cnt).toBe(3);
+  });
+});
+