From e2c703a96f70e6cc99b6e7585c734b47aa7ec595 Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Wed, 21 Dec 2016 15:21:21 -0600
Subject: [PATCH] Avoid more coercion.

---
 lodash.js | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/lodash.js b/lodash.js
index 97808d92c..c1227b234 100644
--- a/lodash.js
+++ b/lodash.js
@@ -5454,7 +5454,7 @@
       var func = Math[methodName];
       return function(number, precision) {
         number = toNumber(number);
-        precision = nativeMin(toInteger(precision), 292);
+        precision = precision == null ? 0 : nativeMin(toInteger(precision), 292);
         if (precision) {
           // Shift with exponential notation to avoid floating-point issues.
           // See [MDN](https://mdn.io/round#Examples) for more details.
@@ -10852,7 +10852,7 @@
       if (typeof func != 'function') {
         throw new TypeError(FUNC_ERROR_TEXT);
       }
-      start = start === undefined ? 0 : nativeMax(toInteger(start), 0);
+      start = start == null ? 0 : nativeMax(toInteger(start), 0);
       return baseRest(function(args) {
         var array = args[start],
             otherArgs = castSlice(args, 0, start);
@@ -12542,7 +12542,9 @@
      * // => 3
      */
     function toSafeInteger(value) {
-      return baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER);
+      return value
+        ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER)
+        : (value === 0 ? value : 0);
     }
 
     /**
@@ -14631,7 +14633,7 @@
      */
     function startsWith(string, target, position) {
       string = toString(string);
-      position = position === undefined
+      position = position == null
         ? 0
         : baseClamp(toInteger(position), 0, string.length);