fix: added more controlled rate for code streaming

app/utils/sampler.ts

@@ -0,0 +1,49 @@
+/**
+ * Creates a function that samples calls at regular intervals and captures trailing calls.
+ * - Drops calls that occur between sampling intervals
+ * - Takes one call per sampling interval if available
+ * - Captures the last call if no call was made during the interval
+ *
+ * @param fn The function to sample
+ * @param sampleInterval How often to sample calls (in ms)
+ * @returns The sampled function
+ */
+export function createSampler<T extends (...args: any[]) => any>(fn: T, sampleInterval: number): T {
+  let lastArgs: Parameters<T> | null = null;
+  let lastTime = 0;
+  let timeout: NodeJS.Timeout | null = null;
+
+  // Create a function with the same type as the input function
+  const sampled = function (this: any, ...args: Parameters<T>) {
+    const now = Date.now();
+    lastArgs = args;
+
+    // If we're within the sample interval, just store the args
+    if (now - lastTime < sampleInterval) {
+      // Set up trailing call if not already set
+      if (!timeout) {
+        timeout = setTimeout(
+          () => {
+            timeout = null;
+            lastTime = Date.now();
+
+            if (lastArgs) {
+              fn.apply(this, lastArgs);
+              lastArgs = null;
+            }
+          },
+          sampleInterval - (now - lastTime),
+        );
+      }
+
+      return;
+    }
+
+    // If we're outside the interval, execute immediately
+    lastTime = now;
+    fn.apply(this, args);
+    lastArgs = null;
+  } as T;
+
+  return sampled;
+}