From 09a28729d5199acfe1f47e7a6e76863d57c51b1d Mon Sep 17 00:00:00 2001
From: tonioss22 <45774106+tonioss22@users.noreply.github.com>
Date: Tue, 11 Jan 2022 08:11:03 -0500
Subject: [PATCH] Added toObjectAsync and toObjArrayAsync.

These functions will not block the event loop compared to the original toObject function. They also return from a promise instead of a callback.
These functions are really useful when dealing with big data as return value. Performances are similar to the original method.
---
 lib/resultset.js | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/lib/resultset.js b/lib/resultset.js
index d175f3f..2d90b28 100644
--- a/lib/resultset.js
+++ b/lib/resultset.js
@@ -52,6 +52,48 @@ function ResultSet(rs) {
   })();
 }
 
+ResultSet.prototype.toObjArrayAsync = function () {
+  return new Promise((resolve, reject) => {
+    this.toObjectAsync().then((results)=> {
+      resolve(results.rows)
+    }).catch((err) => reject(err))
+  })
+};
+
+ResultSet.prototype.toObjectAsync = function () {
+  return new Promise((resolve, reject) => {
+  var tick =
+  (process && process.versions && process.versions.node === '0.9.0') ?
+  tickShim :
+  (setImmediate || process && process.nextTick|| tickShim);
+
+  function tickShim(fn) {setTimeout(fn, 1);}
+
+    this.toObjectIter(function (err, rs) {
+      if (err) reject(new Error(err));
+  
+      var rowIter = rs.rows;
+      var rows = [];
+      var row = rowIter.next();
+
+      (function next() {
+        // invoke the iterator function
+        rows.push(row.value);
+        row = rowIter.next();
+  
+        if (!row.done) {
+          tick(next);
+        }
+        else{
+          rs.rows = rows;
+          resolve(rs);
+        }
+      })();
+    });
+
+  })
+}
+ 
 ResultSet.prototype.toObjArray = function (callback) {
   this.toObject(function (err, result) {
     if (err) return callback(err);