From 70e353163c163985c5b4c4d19d3af21e650faf8d Mon Sep 17 00:00:00 2001
From: yavuzmester <yavuzmester@gmail.com>
Date: Tue, 22 Mar 2016 17:52:04 +0200
Subject: [PATCH] boundary case support (min max same vals)

---
 index.js | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/index.js b/index.js
index 87b21fe..5ddc936 100644
--- a/index.js
+++ b/index.js
@@ -1,5 +1,10 @@
 'use strict';
 
-module.exports = function(range, value) {
-  return (value - range[0]) / (range[1] - range[0]);
+module.exports = function(range, value, rangeWidthZeroDefault) {
+  if (range[0] != range[1]) {
+    return (value - range[0]) / (range[1] - range[0]);
+  }
+  else {
+    return (typeof rangeWidthZeroDefault != "undefined") ? rangeWidthZeroDefault : 0.5
+  }
 };