vite.config.js

import { defineConfig } from "vite";
import { viteStaticCopy } from "vite-plugin-static-copy";

const cesiumSource = "node_modules/cesium/Build/Cesium";
// This is the base url for static files that CesiumJS needs to load
const cesiumBaseUrl = "cesiumStatic";

export default defineConfig({
  define: {
    // Define relative base path in Cesium for loading assets
    CESIUM_BASE_URL: JSON.stringify(`/${cesiumBaseUrl}`),
  },
  plugins: [
    // Copy Cesium Assets, Widgets, and Workers to a static directory
    viteStaticCopy({
      targets: [
        { src: `${cesiumSource}/ThirdParty`, dest: cesiumBaseUrl },
        { src: `${cesiumSource}/Workers`, dest: cesiumBaseUrl },
        { src: `${cesiumSource}/Assets`, dest: cesiumBaseUrl },
        { src: `${cesiumSource}/Widgets`, dest: cesiumBaseUrl },
      ],
    }),
  ],
});