From 7cff1fa500b638b9e1c3b9292e2dceddaf6a5043 Mon Sep 17 00:00:00 2001
From: Mitar <mitar.git@tnode.com>
Date: Sun, 9 Jul 2017 11:24:12 -0700
Subject: [PATCH 1/4] Make Minimongo cursor iterable.

---
 packages/minimongo/minimongo.js | 36 +++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/packages/minimongo/minimongo.js b/packages/minimongo/minimongo.js
index b97663a8a7..d68038f521 100644
--- a/packages/minimongo/minimongo.js
+++ b/packages/minimongo/minimongo.js
@@ -180,6 +180,42 @@ LocalCollection.Cursor.prototype.forEach = function (callback, thisArg) {
   });
 };
 
+LocalCollection.Cursor.prototype[Symbol.iterator] = function () {
+  var self = this;
+
+  var i = 0;
+  var objects = self._getRawObjects({ordered: true});
+
+  if (self.reactive) {
+    self._depend({
+      addedBefore: true,
+      removed: true,
+      changed: true,
+      movedBefore: true});
+  }
+
+  return {
+    next: function () {
+      if (i < objects.length) {
+        // This doubles as a clone operation.
+        var elt = self._projectionFn(objects[i++]);
+
+        if (self._transform)
+          elt = self._transform(elt);
+
+        return {
+          value: elt
+        };
+      }
+      else {
+        return {
+          done: true
+        };
+      }
+    }
+  };
+};
+
 LocalCollection.Cursor.prototype.getTransform = function () {
   return this._transform;
 };

From 03819b02d11dd382ff1117b201b3ac1264011f6e Mon Sep 17 00:00:00 2001
From: Mitar <mitar.git@tnode.com>
Date: Wed, 19 Jul 2017 10:08:50 -0700
Subject: [PATCH 2/4] Made it conditional.

---
 packages/minimongo/minimongo.js | 64 +++++++++++++++++----------------
 1 file changed, 33 insertions(+), 31 deletions(-)

diff --git a/packages/minimongo/minimongo.js b/packages/minimongo/minimongo.js
index d68038f521..e3e163ad67 100644
--- a/packages/minimongo/minimongo.js
+++ b/packages/minimongo/minimongo.js
@@ -180,41 +180,43 @@ LocalCollection.Cursor.prototype.forEach = function (callback, thisArg) {
   });
 };
 
-LocalCollection.Cursor.prototype[Symbol.iterator] = function () {
-  var self = this;
+if (typeof Symbol !== 'undefined' && Symbol.iterator) {
+  LocalCollection.Cursor.prototype[Symbol.iterator] = function () {
+    var self = this;
 
-  var i = 0;
-  var objects = self._getRawObjects({ordered: true});
+    var i = 0;
+    var objects = self._getRawObjects({ordered: true});
 
-  if (self.reactive) {
-    self._depend({
-      addedBefore: true,
-      removed: true,
-      changed: true,
-      movedBefore: true});
-  }
-
-  return {
-    next: function () {
-      if (i < objects.length) {
-        // This doubles as a clone operation.
-        var elt = self._projectionFn(objects[i++]);
-
-        if (self._transform)
-          elt = self._transform(elt);
-
-        return {
-          value: elt
-        };
-      }
-      else {
-        return {
-          done: true
-        };
-      }
+    if (self.reactive) {
+      self._depend({
+        addedBefore: true,
+        removed: true,
+        changed: true,
+        movedBefore: true});
     }
+
+    return {
+      next: function () {
+        if (i < objects.length) {
+          // This doubles as a clone operation.
+          var elt = self._projectionFn(objects[i++]);
+
+          if (self._transform)
+            elt = self._transform(elt);
+
+          return {
+            value: elt
+          };
+        }
+        else {
+          return {
+            done: true
+          };
+        }
+      }
+    };
   };
-};
+}
 
 LocalCollection.Cursor.prototype.getTransform = function () {
   return this._transform;

From d1f891f462cd6a061b34b65238df82345831e9d7 Mon Sep 17 00:00:00 2001
From: Mitar <mitar.git@tnode.com>
Date: Thu, 17 Aug 2017 02:16:45 -0700
Subject: [PATCH 3/4] Added tests.

---
 packages/minimongo/minimongo_tests_client.js | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/packages/minimongo/minimongo_tests_client.js b/packages/minimongo/minimongo_tests_client.js
index 430b4c084e..ca912ab0e8 100644
--- a/packages/minimongo/minimongo_tests_client.js
+++ b/packages/minimongo/minimongo_tests_client.js
@@ -220,6 +220,17 @@ Tinytest.add('minimongo - cursors', test => {
   // call it again, it still works
   test.length(q.fetch(), 20);
 
+  // iterator
+  count = 0;
+  for (let obj of q) {
+    test.equal(obj.i, count++);
+  };
+  test.equal(count, 20);
+  // call it again, it still works
+  test.length(q.fetch(), 20);
+  // test spread operator
+  test.equal([...q], q.fetch());
+
   // map
   res = q.map(function(obj, i, cursor) {
     test.equal(obj.i, i);

From 958c0298219c40546a987eeae000b1d48805d0dc Mon Sep 17 00:00:00 2001
From: Mitar <mitar.git@tnode.com>
Date: Thu, 17 Aug 2017 02:21:12 -0700
Subject: [PATCH 4/4] Added History entry.

---
 History.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/History.md b/History.md
index 66611a6eab..9f2df019b5 100644
--- a/History.md
+++ b/History.md
@@ -1,5 +1,9 @@
 ## v.NEXT
 
+* Minimongo cursors are now JavaScript iterable objects and can now be iterated over
+  using `for...of` loops, spread operator, `yield*`, and destructuring assignments.
+  [PR #8888](https://github.com/meteor/meteor/pull/8888)
+
 * The `star.json` manifest created within the root of a `meteor build` bundle
   will now contain `nodeVersion` and `npmVersion` which will specify the exact
   versions of Node.js and npm (respectively) which the Meteor release was