From 6b7c4a81ba844c58eb6f48e301ec16754dc10633 Mon Sep 17 00:00:00 2001
From: Abdul Razak Khatib <78922825+Abdumbo99@users.noreply.github.com>
Date: Mon, 22 Jul 2024 15:43:05 +0300
Subject: [PATCH] fixed off-by-one length assignment to ensure (RFC 7946)
 compliance and fix inconsistency in calculations

---
 index.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/index.js b/index.js
index 4aba334..f663863 100644
--- a/index.js
+++ b/index.js
@@ -55,7 +55,7 @@ function polygonArea(coords) {
 function ringArea(coords) {
     var p1, p2, p3, lowerIndex, middleIndex, upperIndex, i,
     area = 0,
-    coordsLength = coords.length;
+    coordsLength = coords.length - 1;
 
     if (coordsLength > 2) {
         for (i = 0; i < coordsLength; i++) {
@@ -86,4 +86,4 @@ function ringArea(coords) {
 
 function rad(_) {
     return _ * Math.PI / 180;
-}
\ No newline at end of file
+}