Improve interruptAndCheck behavior (#1787)

Author: thejoecode

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;