From 56120436ef2ee0471f9d854333d64579f759f48f Mon Sep 17 00:00:00 2001
From: Mingye Wang <arthur200126@gmail.com>
Date: Fri, 9 Apr 2021 23:28:48 +0800
Subject: [PATCH] bezier: properly complain when number of colors is bad

Maybe I should've generalized the 5 case into a bisecting or windowed implementation, but I am too lazy to actually test that.

Fixes #245.
---
 src/generator/bezier.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/generator/bezier.js b/src/generator/bezier.js
index 177e91ea..f0f9c04f 100644
--- a/src/generator/bezier.js
+++ b/src/generator/bezier.js
@@ -42,6 +42,8 @@ const bezier = function(colors) {
                 return I1((t-0.5)*2);
             }
         };
+    } else {
+        throw new RangeError("Bezier can only accept between 2 to 5 colors; got `${colors.length}`.")
     }
     return I;
 };