From 49f8aa428942890f1804024888995ce66ed11985 Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Wed, 13 Apr 2016 18:17:07 -0700
Subject: [PATCH] Fix failing debounce test.

---
 lodash.js | 22 +++++++++++++---------
 1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/lodash.js b/lodash.js
index 703224baa..7a1fffbe5 100644
--- a/lodash.js
+++ b/lodash.js
@@ -9372,12 +9372,13 @@
     function debounce(func, wait, options) {
       var lastArgs,
           lastThis,
+          maxWait,
           result,
           timerId,
           lastCallTime = 0,
           lastInvokeTime = 0,
           leading = false,
-          maxWait = false,
+          maxing = false,
           trailing = true;
 
       if (typeof func != 'function') {
@@ -9386,7 +9387,8 @@
       wait = toNumber(wait) || 0;
       if (isObject(options)) {
         leading = !!options.leading;
-        maxWait = 'maxWait' in options && nativeMax(toNumber(options.maxWait) || 0, wait);
+        maxing = 'maxWait' in options;
+        maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;
         trailing = 'trailing' in options ? !!options.trailing : trailing;
       }
 
@@ -9414,7 +9416,7 @@
             timeSinceLastInvoke = time - lastInvokeTime,
             result = wait - timeSinceLastCall;
 
-        return maxWait === false ? result : nativeMin(result, maxWait - timeSinceLastInvoke);
+        return maxing ? nativeMin(result, maxWait - timeSinceLastInvoke) : result;
       }
 
       function shouldInvoke(time) {
@@ -9425,7 +9427,7 @@
         // trailing edge, the system time has gone backwards and we're treating
         // it as the trailing edge, or we've hit the `maxWait` limit.
         return (!lastCallTime || (timeSinceLastCall >= wait) ||
-          (timeSinceLastCall < 0) || (maxWait !== false && timeSinceLastInvoke >= maxWait));
+          (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));
       }
 
       function timerExpired() {
@@ -9474,10 +9476,12 @@
           if (timerId === undefined) {
             return leadingEdge(lastCallTime);
           }
-          // Handle invocations in a tight loop.
-          clearTimeout(timerId);
-          timerId = setTimeout(timerExpired, wait);
-          return invokeFunc(lastCallTime);
+          if (maxing) {
+            // Handle invocations in a tight loop.
+            clearTimeout(timerId);
+            timerId = setTimeout(timerExpired, wait);
+            return invokeFunc(lastCallTime);
+          }
         }
         if (timerId === undefined) {
           timerId = setTimeout(timerExpired, wait);
@@ -14698,7 +14702,7 @@
         object = this;
         methodNames = baseFunctions(source, keys(source));
       }
-      var chain = (isObject(options) && 'chain' in options) ? options.chain : true,
+      var chain = !(isObject(options) && 'chain' in options) || !!options.chain,
           isFunc = isFunction(object);
 
       arrayEach(methodNames, function(methodName) {