fix(init): Don't overwrite existing files when initializing a new project (#556)

Co-authored-by: Aaron <aaronklinker1@gmail.com>

src/core/initialize.ts

@@ -59,6 +59,16 @@ export async function initialize(options: {
   input.template ??= defaultTemplate;
   input.packageManager ??= options.packageManager;
 
+  const isExists = await fs.pathExists(input.directory);
+  if (isExists) {
+    const isEmpty = (await fs.readdir(input.directory)).length === 0;
+    if (!isEmpty) {
+      consola.error(
+        `The directory ${path.resolve(input.directory)} is not empty. Aborted.`,
+      );
+      process.exit(1);
+    }
+  }
   await cloneProject(input);
 
   const cdPath = path.relative(process.cwd(), path.resolve(input.directory));
@@ -145,6 +155,9 @@ async function cloneProject({
       .move(
         path.join(directory, '_gitignore'),
         path.join(directory, '.gitignore'),
+        {
+          overwrite: true,
+        },
       )
       .catch((err) =>
         consola.warn('Failed to move _gitignore to .gitignore:', err),