change vite config so top level await can be used

Author: mstop4

vite.config.js

@@ -2,5 +2,8 @@ import { resolve } from 'path';
 import { defineConfig } from 'vite';
 
 export default defineConfig({
-  base: '/mc-3d-path-map/'
+  base: '/mc-3d-path-map/',
+  build: {
+    target: 'esnext' //browsers can handle the latest ES features
+  }
 });