Add logjam example

examples/logjam/src/log.js

@@ -0,0 +1,19 @@
+/// <reference types="vite/client" />
+
+export function log(...args) {
+  if (import.meta.env.MODE !== 'production') {
+    console.log(...args);
+  }
+}
+
+log.error = function error(...args) {
+  if (import.meta.env.MODE !== 'production') {
+    console.log(...args);
+  }
+};
+
+log.warn = function warn(...args) {
+  if (import.meta.env.MODE !== 'production') {
+    console.warn(...args);
+  }
+};

examples/logjam/src/log.test.js

@@ -0,0 +1,14 @@
+import { expect, it, vi, beforeEach, afterEach, describe } from 'vitest';
+import { log } from './log';
+
+describe.todo('logger', () => {
+  it('logs to the console in development mode', () => {
+    const spy = vi.spyOn(console, 'log');
+
+    log('Hello, world!');
+
+    expect(spy).toHaveBeenCalledWith('Hello, world!');
+
+    spy.mockRestore();
+  });
+});