From a829dfdf12adcb7c4d03a478714a7ff02024ca94 Mon Sep 17 00:00:00 2001
From: thejoecode <1725110+thejoecode@users.noreply.github.com>
Date: Thu, 23 Jan 2025 03:53:09 -0800
Subject: [PATCH] Improve `interruptAndCheck` behavior (#1787)

---
 packages/langium/src/utils/promise-utils.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/packages/langium/src/utils/promise-utils.ts b/packages/langium/src/utils/promise-utils.ts
index c7b8aea99..4540c4ace 100644
--- a/packages/langium/src/utils/promise-utils.ts
+++ b/packages/langium/src/utils/promise-utils.ts
@@ -78,6 +78,10 @@ export async function interruptAndCheck(token: CancellationToken): Promise<void>
     if (current - lastTick >= globalInterruptionPeriod) {
         lastTick = current;
         await delayNextTick();
+        // prevent calling delayNextTick every iteration of loop
+        // where delayNextTick takes up the majority or all of the
+        // globalInterruptionPeriod itself
+        lastTick = performance.now();
     }
     if (token.isCancellationRequested) {
         throw OperationCancelled;