From 81dfef3ec8e25e201d164f3c54be5fb6e6152a23 Mon Sep 17 00:00:00 2001
From: "Andres G. Aragoneses" <knocte@gmail.com>
Date: Tue, 10 Sep 2024 01:12:37 +0800
Subject: [PATCH] WIP3

---
 commitlint/fpHelpers.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/commitlint/fpHelpers.ts b/commitlint/fpHelpers.ts
index 5af094d2..477cc350 100644
--- a/commitlint/fpHelpers.ts
+++ b/commitlint/fpHelpers.ts
@@ -53,6 +53,9 @@ export class OptionStatic {
 export class TypeHelpers {
     // because instanceof doesn't work with primitive types (e.g. String), taken from https://stackoverflow.com/a/58184883/544947
     public static IsInstanceOf(variable: any, type: any) {
+        if (variable === null || variable === undefined) {
+            throw new Error ("Invalid 'variable' parameter passed in: null or undefined");
+        }
         let res: boolean = false;
         if (typeof type == "string") {
             res = typeof variable == type.toLowerCase();