diff --git a/src/main.ts b/src/main.ts
index b26f853..9b6dc71 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,5 +1,5 @@
 import * as minimist from 'minimist';
-import { pack } from './package';
+import { pack, ls } from './package';
 import { publish, list } from './publish';
 import { fatal } from './util';
 import { publisher } from './store';
@@ -10,6 +10,7 @@ function helpCommand(): void {
 
 Commands:
     publish                      Publishes an extension
+    ls                           Lists all the files that will be packaged
     list <publisher>             Lists all extensions published by the given publisher
     publisher add <publisher>    Add a publisher
     publisher rm <publisher>     Remove a publisher
@@ -32,6 +33,7 @@ function command(args: minimist.ParsedArgs): boolean {
 		const promise = (() => {
 			switch (args._[0]) {
 				case 'package': return pack(args._[1]).then(({ packagePath }) => console.log(`Package created: ${ packagePath }`));
+				case 'ls': return ls();
 				case 'publish': return publish(args._[1]);
 				case 'list': return list(args._[1]);
 				case 'publisher': return publisher(args._[1], args._[2]);
diff --git a/src/package.ts b/src/package.ts
index c0c582c..d54031f 100644
--- a/src/package.ts
+++ b/src/package.ts
@@ -66,7 +66,7 @@ function prepublish(cwd: string, manifest: Manifest): Promise<Manifest> {
 	}
 	
 	const script = manifest.scripts['vscode:prepublish'];
-	console.log(`Executing prepublish script '${ script }'...`);
+	console.warn(`Executing prepublish script '${ script }'...`);
 	
 	return nfcall<string>(exec, script, { cwd })
 		.catch(err => reject(err.message))
@@ -151,4 +151,12 @@ export function pack(packagePath?: string, cwd = process.cwd()): Promise<IPackag
 		.then(manifest => collect(cwd, manifest)
 			.then(files => writeVsix(files, packagePath || defaultPackagePath(cwd, manifest))
 				.then(packagePath => ({ manifest, packagePath }))));
+}
+
+export function ls(cwd = process.cwd()): Promise<any> {
+	return readManifest(cwd)
+		.then(validateManifest)
+		.then(manifest => prepublish(cwd, manifest))
+		.then(manifest => collectFiles(cwd, manifest))
+		.then(files => files.forEach(f => console.log(`${f}`)));
 }
\ No newline at end of file