From 0cb1f895225ec4903b2e7a226c5c472b9e90b805 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lo=C3=AFc=20Mangeonjean?= <loic@codingame.com>
Date: Tue, 19 Apr 2022 16:07:17 +0200
Subject: [PATCH] fix: Missing condition

---
 src/languages/textMate/index.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/languages/textMate/index.ts b/src/languages/textMate/index.ts
index 2725f74..dbf97a0 100644
--- a/src/languages/textMate/index.ts
+++ b/src/languages/textMate/index.ts
@@ -36,6 +36,9 @@ const languageService = monaco.extra.StandaloneServices.get(monaco.languages.ILa
 async function createTextMateTokensProvider (languageId: string): Promise<monaco.languages.ITokenizationSupport | null> {
   const grammarFactory = getOrCreateGrammarFactory()
   const encodedLanguageId = languageService.languageIdCodec.encodeLanguageId(languageId)
+  if (!grammarFactory.has(languageId)) {
+    return null
+  }
   const { grammar, initialState, containsEmbeddedLanguages } = await grammarFactory.createGrammar(languageId, encodedLanguageId)
   if (grammar == null) {
     return null