From aa1ec94791542df69c3b22c071bd1e9e77bcb42f Mon Sep 17 00:00:00 2001
From: Alexander Early <alex@npmjs.com>
Date: Tue, 10 Jul 2018 21:16:45 -0700
Subject: tighten up implementation

---
 lib/internal/asyncEachOfLimit.js | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/lib/internal/asyncEachOfLimit.js b/lib/internal/asyncEachOfLimit.js
index a34bf0a..403915b 100644
--- a/lib/internal/asyncEachOfLimit.js
+++ b/lib/internal/asyncEachOfLimit.js
@@ -10,15 +10,17 @@ export default function asyncEachOfLimit(generator, limit, iteratee, callback) {
 
     function replenish() {
         //console.log('replenish')
-        if (running >= limit || awaiting) return
+        if (running >= limit || awaiting || done) return
         //console.log('replenish awaiting')
         awaiting = true
         generator.next().then(({value, done: iterDone}) => {
             //console.log('got value', value)
+            if (canceled || done) return
             awaiting = false
             if (iterDone) {
                 done = true;
                 if (running <= 0) {
+                    //console.log('done nextCb')
                     callback(null)
                 }
                 return;
@@ -32,24 +34,26 @@ export default function asyncEachOfLimit(generator, limit, iteratee, callback) {
 
     function iterateeCallback(err, result) {
         //console.log('iterateeCallback')
-        if (canceled) return
         running -= 1;
+        if (canceled) return
         if (err) return handleError(err)
 
         if (err === false) {
             done = true;
             canceled = true;
+            return
         }
 
         if (result === breakLoop || (done && running <= 0)) {
             done = true;
-            //console.log('done')
+            //console.log('done iterCb')
             return callback(null);
         }
         replenish()
     }
 
     function handleError(err) {
+        if (canceled) return
         awaiting = false
         done = true
         callback(err)
-- 
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