adopt latest vsce

build/lib/extensions.js

@@ -20,7 +20,7 @@ var vsce = require("vsce");
 var File = require("vinyl");
 function fromLocal(extensionPath) {
     var result = es.through();
-    vsce.listFiles({ cwd: extensionPath })
+    vsce.listFiles({ cwd: extensionPath, packageManager: vsce.PackageManager.Yarn })
         .then(function (fileNames) {
         var files = fileNames
             .map(function (fileName) { return path.join(extensionPath, fileName); })

build/lib/extensions.ts

@@ -22,7 +22,7 @@ import * as File from 'vinyl';
 export function fromLocal(extensionPath: string): Stream {
 	const result = es.through();
 
-	vsce.listFiles({ cwd: extensionPath })
+	vsce.listFiles({ cwd: extensionPath, packageManager: vsce.PackageManager.Yarn })
 		.then(fileNames => {
 			const files = fileNames
 				.map(fileName => path.join(extensionPath, fileName))