add clean option to CLI

scripts/extract-elx/extract-elx.js

@@ -7,7 +7,7 @@
  * for better version control and diff visibility.
  * 
  * Usage:
- *   node extract-elx.js <input-file-path> [--overwrite]
+ *   node extract-elx.js <input-file-path> [--overwrite] [--clean]
  * 
  * Output:
  *   Creates a folder named after the input file (without extension) containing:
@@ -344,16 +344,20 @@ async function readInputFile(filePath) {
 /**
  * Create output directory for extracted properties
  */
-async function createOutputDirectory(outputPath, allowOverwrite = false) {
-  if (existsSync(outputPath)) {
-    if (!allowOverwrite) {
-      throw new Error(
-        `Output directory already exists: ${outputPath}\n` +
-        `Use --overwrite flag to replace it.`
-      );
-    }
-    // Optionally remove existing directory
-    console.log(`Removing existing directory: ${outputPath}`);
+async function createOutputDirectory(outputPath, allowOverwrite = false, cleanExisting = false) {
+  if (!allowOverwrite && !cleanExisting && existsSync(outputPath)) {
+    throw new Error(
+      `Output directory already exists: ${outputPath}\n` +
+      `Use --overwrite flag to replace it or --clean flag to remove its contents.`
+    );
+  }
+
+  // Optionally remove existing directory
+  if (cleanExisting) {
+    console.log(`Removing existing directory contents: ${outputPath}`);
+    await fs.rm(`${outputPath}`, { recursive: true, force: true });
+  } else if (allowOverwrite) {
+    console.log(`Overwriting existing directory: ${outputPath}`);
   }
 
   try {
@@ -612,13 +616,14 @@ async function main() {
     const args = process.argv.slice(2);
 
     if (args.length === 0) {
-      console.error('Usage: node extract-elx.js <input-file-path> [--overwrite]');
+      console.error('Usage: node extract-elx.js <input-file-path> [--overwrite] [--clean]');
       console.error('Example: node extract-elx.js elxforms_4951.elx');
       process.exit(1);
     }
 
     const inputPath = args[0];
     const allowOverwrite = args.includes('--overwrite');
+    const cleanExisting = args.includes('--clean');
 
     // Validate input file
     if (!existsSync(inputPath)) {
@@ -640,7 +645,7 @@ async function main() {
 
     // Create output directory
     console.log(`\n📂 Creating output: ${outputPath}`);
-    await createOutputDirectory(outputPath, allowOverwrite);
+    await createOutputDirectory(outputPath, allowOverwrite, cleanExisting);
 
     // Process each root property
     console.log('\n⚙️  Processing properties:\n');