Adding cesium

index-WhJpq37p.js:1 ReferenceError: Cesium is not defined
    at T (index-WhJpq37p.js:1:486)
    at p (index-WhJpq37p.js:1:569)
    at o (index-WhJpq37p.js:1:1392)
    at Hi (main-C8AiDNAO.js:27:92917)
    at _a (main-C8AiDNAO.js:27:109126)
    at _a (main-C8AiDNAO.js:27:109112)
    at _a (main-C8AiDNAO.js:27:109112)
    at _a (main-C8AiDNAO.js:27:109112)
    at _a (main-C8AiDNAO.js:27:109112)
    at _a (main-C8AiDNAO.js:27:109112)
(anonymous) @ main-C8AiDNAO.js:27
J @ main-C8AiDNAO.js:20
index-WhJpq37p.js:1 ReferenceError: Cesium is not defined
    at p (index-WhJpq37p.js:1:604)

import { defineConfig } from 'vite'
import { devtools } from '@tanstack/devtools-vite'
import { tanstackStart } from '@tanstack/react-start/plugin/vite'
import viteReact from '@vitejs/plugin-react'
import viteTsConfigPaths from 'vite-tsconfig-paths'
import tailwindcss from '@tailwindcss/vite'
import { nitro } from 'nitro/vite'
import cesium from 'vite-plugin-cesium'

export default defineConfig({
  plugins: [
    devtools(),
    viteTsConfigPaths({ projects: ['./tsconfig.json'] }),
    tanstackStart({
      router: {
        generatedRouteTree: 'tree.gen.ts',
        routeFileIgnorePattern: '.test.tsx',
        routeFileIgnorePrefix: '-',
        quoteStyle: 'single',
        addExtensions: true,
        semicolons: false,
      },
    }),
    nitro({ preset: 'bun' }),
    viteReact({
      babel: {
        plugins: ['babel-plugin-react-compiler'],
      },
    }),
    tailwindcss(),
    cesium(),
  ],
  server: {
    host: '0.0.0.0',
  },
})