fix #983 RuntimeError does not inherit from Error (#984)

* fix #983 RuntimeError does not inherit from Error

* #983 add changelog entity

Author: exe-dealer

CHANGELOG.md

@@ -4,7 +4,7 @@
 - _...Add new stuff here..._
 
 ### 🐞 Bug fixes
-- _...Add new stuff here..._
+- Fix RuntimeError class, make it inherited from Error ([#983](https://github.com/maplibre/maplibre-style-spec/issues/983))
 
 ## 23.1.0
 

src/expression/runtime_error.ts

@@ -1,10 +1,7 @@
-export class RuntimeError {
-    name: string;
-    message: string;
-
+export class RuntimeError extends Error {
     constructor(message: string) {
-        this.name = 'ExpressionEvaluationError';
-        this.message = message;
+        super(message);
+        this.name = 'RuntimeError';
     }
 
     toJSON() {