From 868fd1253b18699d81fef478ad13218bbccbfd05 Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Tue, 24 Jan 2017 10:32:12 -0800
Subject: [PATCH] Make `lower` param of `clamp` required. [closes #2949]

---
 .internal/baseClamp.js | 10 +++-------
 clamp.js               | 20 +++++++-------------
 2 files changed, 10 insertions(+), 20 deletions(-)

diff --git a/.internal/baseClamp.js b/.internal/baseClamp.js
index 055b7091b..286533d55 100644
--- a/.internal/baseClamp.js
+++ b/.internal/baseClamp.js
@@ -3,18 +3,14 @@
  *
  * @private
  * @param {number} number The number to clamp.
- * @param {number} [lower] The lower bound.
+ * @param {number} lower The lower bound.
  * @param {number} upper The upper bound.
  * @returns {number} Returns the clamped number.
  */
 function baseClamp(number, lower, upper) {
   if (number === number) {
-    if (upper !== undefined) {
-      number = number <= upper ? number : upper;
-    }
-    if (lower !== undefined) {
-      number = number >= lower ? number : lower;
-    }
+    number = number <= upper ? number : upper;
+    number = number >= lower ? number : lower;
   }
   return number;
 }
diff --git a/clamp.js b/clamp.js
index 43807a775..a7bf59dbb 100644
--- a/clamp.js
+++ b/clamp.js
@@ -7,7 +7,7 @@ import toNumber from './toNumber.js';
  * @since 4.0.0
  * @category Number
  * @param {number} number The number to clamp.
- * @param {number} [lower] The lower bound.
+ * @param {number} lower The lower bound.
  * @param {number} upper The upper bound.
  * @returns {number} Returns the clamped number.
  * @example
@@ -19,18 +19,12 @@ import toNumber from './toNumber.js';
  * // => 5
  */
 function clamp(number, lower, upper) {
-  if (upper === undefined) {
-    upper = lower;
-    lower = undefined;
-  }
-  if (upper !== undefined) {
-    upper = toNumber(upper);
-    upper = upper === upper ? upper : 0;
-  }
-  if (lower !== undefined) {
-    lower = toNumber(lower);
-    lower = lower === lower ? lower : 0;
-  }
+  lower = toNumber(lower);
+  lower = lower === lower ? lower : 0;
+
+  upper = toNumber(upper);
+  upper = upper === upper ? upper : 0;
+
   return baseClamp(toNumber(number), lower, upper);
 }