From 7bcb876a04173599a6346c3032d8ed47a590cb42 Mon Sep 17 00:00:00 2001
From: Gabriel Ebner <gebner@gebner.org>
Date: Thu, 25 Mar 2021 15:18:30 +0100
Subject: [PATCH] Mark documents with lean4 in parallel.

---
 src/extension.ts | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/extension.ts b/src/extension.ts
index d1df42380..edc5f1769 100644
--- a/src/extension.ts
+++ b/src/extension.ts
@@ -46,10 +46,8 @@ export async function activate(context: ExtensionContext): Promise<any> {
         return api
     }
 
-    for (const textDocument of workspace.textDocuments) {
-        if (textDocument.languageId === 'lean')
-            await languages.setTextDocumentLanguage(textDocument, 'lean4')
-    }
+    await Promise.all(workspace.textDocuments.map(async (doc) =>
+        doc.languageId === 'lean' && languages.setTextDocumentLanguage(doc, 'lean4')))
 
     const client: LeanClient = new LeanClient()
     context.subscriptions.push(client)