From d3444006886fd90a6077b2ee2be25a36a56f11c8 Mon Sep 17 00:00:00 2001
From: Brad Cornes <hello@bradley.dev>
Date: Tue, 12 Apr 2022 19:11:48 +0100
Subject: [PATCH] Fix flakiness caused by expired cache entries

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

diff --git a/packages/tailwindcss-language-service/src/util/getLanguageBoundaries.ts b/packages/tailwindcss-language-service/src/util/getLanguageBoundaries.ts
index d4bb4a0..bbe36ba 100644
--- a/packages/tailwindcss-language-service/src/util/getLanguageBoundaries.ts
+++ b/packages/tailwindcss-language-service/src/util/getLanguageBoundaries.ts
@@ -96,8 +96,10 @@ export function getLanguageBoundaries(
   text: string = doc.getText()
 ): LanguageBoundary[] | null {
   let cacheKey = `${doc.languageId}:${text}`
-  if (cache.has(cacheKey)) {
-    return cache.get(cacheKey)
+
+  let cachedBoundaries = cache.get(cacheKey)
+  if (cachedBoundaries !== undefined) {
+    return cachedBoundaries
   }
 
   let defaultType = isVueDoc(doc)