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

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

@@ -0,0 +1,39 @@
+
+import {
+  mod,
+  modBI,
+} from '../src/mod.mjs';
+
+describe('mod', () => {
+  it('mod', () => {
+    expect(mod(4, 100)).toEqual(4);
+    expect(mod(104, 100)).toEqual(4);
+    expect(mod(4 - 100, 100)).toEqual(4);
+    expect(mod(4 + 96, 100)).toEqual(0);
+    expect(mod(-4 - 96, 100)).toEqual(0);
+  });
+
+  it('mod sign', () => {
+    expect(mod(4, 100)).toEqual(4);
+    expect(mod(-4, 100)).toEqual(96);
+    expect(mod(4, -100)).toEqual(-96);
+    expect(mod(-4, -100)).toEqual(-4);
+  });
+});
+
+describe('mod BI', () => {
+  it('mod', () => {
+    expect(modBI(4n, 100n)).toEqual(4n);
+    expect(modBI(104n, 100n)).toEqual(4n);
+    expect(modBI(4n - 100n, 100n)).toEqual(4n);
+    expect(modBI(4n + 96n, 100n)).toEqual(0n);
+    expect(modBI(-4n - 96n, 100n)).toEqual(0n);
+  });
+
+  it('mod sign', () => {
+    expect(modBI(4n, 100n)).toEqual(4n);
+    expect(modBI(-4n, 100n)).toEqual(96n);
+    expect(modBI(4n, -100n)).toEqual(-96n);
+    expect(modBI(-4n, -100n)).toEqual(-4n);
+  });
+});