From f2fb5a9312b271f0e973e71359de976e7cba1853 Mon Sep 17 00:00:00 2001
From: Daniel Izdebski <spidiritsu@gmail.com>
Date: Mon, 22 Jan 2024 16:52:10 +0100
Subject: [PATCH] =?UTF-8?q?=E2=9C=A8=20feat(core):=20Add=20`isDirEmpty`=20?=
 =?UTF-8?q?util?=
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---
 packages/core/src/utils/isDirEmpty.ts       |  7 ++++
 packages/core/test/utils/isDirEmpty.test.ts | 39 +++++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 packages/core/src/utils/isDirEmpty.ts
 create mode 100644 packages/core/test/utils/isDirEmpty.test.ts

diff --git a/packages/core/src/utils/isDirEmpty.ts b/packages/core/src/utils/isDirEmpty.ts
new file mode 100644
index 000000000..e3fb88f2b
--- /dev/null
+++ b/packages/core/src/utils/isDirEmpty.ts
@@ -0,0 +1,7 @@
+import fs from 'fs-extra'
+
+export async function isDirEmpty(dirPath: string) {
+  const files = await fs.readdir(dirPath)
+
+  return files.length === 0
+}
diff --git a/packages/core/test/utils/isDirEmpty.test.ts b/packages/core/test/utils/isDirEmpty.test.ts
new file mode 100644
index 000000000..d28d15518
--- /dev/null
+++ b/packages/core/test/utils/isDirEmpty.test.ts
@@ -0,0 +1,39 @@
+import path from 'node:path'
+import { fs, vol } from 'memfs'
+import { afterAll, afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { isDirEmpty } from '../../src/utils/isDirEmpty'
+
+const ROOT_DIR = '/tmp'
+const FILE_PATH = path.join(ROOT_DIR, 'file.txt')
+
+vi.mock('fs-extra', async () => {
+  return {
+    default: fs.promises
+  }
+})
+
+describe('isDirEmpty', () => {
+  afterAll(() => {
+    vi.resetAllMocks()
+  })
+
+  beforeEach(() => {
+    vol.mkdirSync(ROOT_DIR)
+  })
+
+  afterEach(() => {
+    vol.reset() // Clear the in-memory file system after each test
+  })
+
+  it('returns `true` if the directory is empty', async () => {
+    const isEmpty = await isDirEmpty(ROOT_DIR)
+    expect(isEmpty).toEqual(true)
+  })
+
+  it('returns `false` if the directory contains files', async () => {
+    fs.writeFileSync(FILE_PATH, 'Hello there! 👋')
+
+    const isEmpty = await isDirEmpty(ROOT_DIR)
+    expect(isEmpty).toEqual(false)
+  })
+})