add chunked-parallel from events page branch

plugins/utils/chunked-parallel.js

@@ -0,0 +1,30 @@
+/**
+ * Run tasks in parallel, but limit the number of tasks running at the same time.
+ * @param {Array} tasks - Array of functions that return promises.
+ * @param {Number} chunkSize - Number of tasks to run in parallel.
+ * @returns {Array} - Array of results.
+ */
+module.exports = function chunkedParallel(tasks, chunkSize) {
+  return new Promise((resolve, reject) => {
+    const results = [];
+    let index = 0;
+
+    function runNext() {
+      if (index >= tasks.length) {
+        return resolve(results);
+      }
+
+      const chunk = tasks.slice(index, index + chunkSize);
+      index += chunkSize;
+
+      Promise.all(chunk.map((task) => task()))
+        .then((chunkResults) => {
+          results.push(...chunkResults);
+          runNext();
+        })
+        .catch(reject);
+    }
+
+    runNext();
+  });
+};