From 7f12f929e55de91d1cd467edc63f0e146ea6d618 Mon Sep 17 00:00:00 2001
From: bakedpotatolord <jeffy9745@gmail.com>
Date: Wed, 18 Jun 2025 20:15:34 -0600
Subject: [PATCH] add typecheck to avoid dangerous code that can cause infinite
 looping

---
 src/geo/base.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/geo/base.js b/src/geo/base.js
index 1e64af86..e851e803 100644
--- a/src/geo/base.js
+++ b/src/geo/base.js
@@ -405,6 +405,10 @@ function center2pr(p1, p2, r, clockwise) {
 // find angle difference between 0 and 2pi from n1 to n2 (signed depending on clock direction)
 function thetaDiff(n1, n2, clockwise) {
     let diff = n2 - n1;
+    if(typeof n1  != 'number' || typeof n2 != 'number') {
+        throw ("n1 and n2 must be numbers");
+        // this check is here because this causes an infinite loop when other value are provided
+    }
     while (diff < -Math.PI) diff += Math.PI * 2;
     while (diff > Math.PI) diff -= Math.PI * 2;
     if (clockwise && diff > 0) diff -= Math.PI * 2;