Implement randomHexColor and isHexColor utils

.changeset/rare-plums-complain.md

@@ -0,0 +1,5 @@
+---
+'@busyxiang/utilities-js': patch
+---
+
+Implement randomHexColor and isHexColor util

src/color.test.ts

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+import { randomHexColor, isHexColor } from './color';
+
+describe('isHexColor', () => {
+  test('it should return true if is valid hex color', () => {
+    const isValid = isHexColor('#e34155');
+
+    expect(isValid).toBe(true);
+  });
+
+  test('it should return false if is invalid input', () => {
+    const isValid = isHexColor('color');
+
+    expect(isValid).toBe(false);
+  });
+});
+
+describe('randomHexColor', () => {
+  test('it should return a valid hex color', () => {
+    const regex = /^#[0-9A-F]{6}$/i;
+
+    for (let i = 0; i < 10; i++) {
+      const color = randomHexColor();
+
+      expect(regex.test(color)).toBe(true);
+    }
+  });
+});

src/color.ts

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+export const randomHexColor = () => {
+  const code = (Math.random() * 0xfffff * 1000000).toString(16);
+  return `#${code.slice(0, 6)}`;
+};
+
+export const isHexColor = (hexColor: string) => {
+  const regex = /^#[0-9A-F]{6}$/i;
+
+  return regex.test(hexColor);
+};