Apply suggestions from code review

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: annajowang

packages/@apphosting/common/src/index.spec.ts

@@ -2,13 +2,13 @@ import assert from "assert";
 import fs from "fs";
 import path from "path";
 import os from "os";
-const importIndex = import("@apphosting/common/dist/index.js");
+import { UpdateOrCreateGitignore } from "./index";
 
 describe("update or create .gitignore", () => {
   let tmpDir: string;
-  beforeEach(() => {
-    tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), "test-gitignore"));
-  });
+afterEach(() => {
+  fs.rmSync(tmpDir, { recursive: true, force: true });
+});
 
   it(".gitignore file exists and is correctly updated with missing paths", async () => {
     const { updateOrCreateGitignore } = await importIndex;

packages/@apphosting/common/src/index.ts

@@ -1,6 +1,5 @@
 import { spawn } from "child_process";
-import * as path from "node:path";
-import * as fs from "fs-extra";
+import * as fs from "node:fs";
 
 // Output bundle metadata specifications to be written to bundle.yaml
 export interface OutputBundleConfig {