From be9cf53a8ad68348fffcd40f364ee5f86503e9d8 Mon Sep 17 00:00:00 2001
From: Kai Volland <volland@terrestris.de>
Date: Mon, 5 Sep 2022 11:22:38 +0200
Subject: [PATCH] make function typeguards more failsafe

---
 typeguards.ts | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/typeguards.ts b/typeguards.ts
index a16c285a2..792e2a25d 100644
--- a/typeguards.ts
+++ b/typeguards.ts
@@ -192,7 +192,7 @@ export const isGeoStylerNumberFunction = (got: any): got is GeoStylerNumberFunct
     'tan',
     'toDegrees',
     'toRadians'
-  ].includes(got.name);
+  ].includes(got?.name);
 };
 
 export const isGeoStylerStringFunction = (got: any): got is GeoStylerStringFunction => {
@@ -209,7 +209,7 @@ export const isGeoStylerStringFunction = (got: any): got is GeoStylerStringFunct
     'strToLowerCase',
     'strToUpperCase',
     'strTrim'
-  ].includes(got.name);
+  ].includes(got?.name);
 };
 
 export const isGeoStylerBooleanFunction = (got: any): got is GeoStylerBooleanFunction => {
@@ -222,13 +222,13 @@ export const isGeoStylerBooleanFunction = (got: any): got is GeoStylerBooleanFun
     'strEqualsIgnoreCase',
     'strMatches',
     'strStartsWith'
-  ].includes(got.name);
+  ].includes(got?.name);
 };
 
 export const isGeoStylerUnknownFunction = (got: any): got is GeoStylerUnknownFunction => {
   return [
     'property',
-  ].includes(got.name);
+  ].includes(got?.name);
 };
 
 export const isGeoStylerFunction = (got: any): got is GeoStylerFunction => {