cesium-vite-example

A minimal recommended setup for an applications using Cesium with Vite.

If you are using Webpack instead of Vite, check out our cesium-webpack-example repo.

UI framework support

This example was created to be the lowest common denominator in the Vite ecosystem and targets Vanilla JS. The same configuration has been tested with other UI frameworks in Vite (like Vue) by adding the relevant plugin. If you run into framework specific problems please open an issue.

If you create a new Vite project with create-vite you can combine the plugins that it adds in vite.config.js with the ones in this example configuration.

Running this application

npm install
npm run dev

For the built, production version

npm run build
npm run preview

Navigate to localhost:5173. For the built version navigate to localhost:4173

Available scripts

• npm run eslint - Lint this project
• npm run prettier - Format all the code to a consistant style
• npm run prettier-check - Check the format of code but do not change it
• npm run dev - Starts the Vite development server server at localhost:5173
• npm run build - Runs the Vite production build
• npm run preview - Starts a local preview of the production build using vite preview

Requiring Cesium in your application

We recommend importing named exports from the Cesium ES module, via the import keyword.

Import named modules from Cesium

import { Color } from "cesium";
var c = Color.fromRandom();

Import Cesium static asset files

import "cesium/Build/Cesium/Widgets/widgets.css";

Cesium sub-packages

CesiumJS requires a few static files to be hosted on your server, like web workers and SVG icons. This example is already set up to copy these directories if you install the whole cesium package.

viteStaticCopy({
  targets: [
    { src: `${cesiumSource}/ThirdParty`, dest: cesiumBaseUrl },
    { src: `${cesiumSource}/Workers`, dest: cesiumBaseUrl },
    { src: `${cesiumSource}/Assets`, dest: cesiumBaseUrl },
    { src: `${cesiumSource}/Widgets`, dest: cesiumBaseUrl },
  ],
}),

However if you only install @cesium/engine then you should change the paths in vite.config.js to the ones below:

viteStaticCopy({
  targets: [
    { src: 'node_modules/@cesium/engine/Build/Workers', dest: cesiumBaseUrl },
    { src: 'node_modules/@cesium/engine/Build/ThirdParty', dest: cesiumBaseUrl },
    { src: 'node_modules/@cesium/engine/Source/Assets', dest: cesiumBaseUrl },
  ],
}),

Additionally you will have to import a different widgets css file in src/main.js.

// Change this import
import "cesium/Build/Cesium/Widgets/widgets.css";

// To this one from the cesium/engine package
import "@cesium/engine/Source/Widget/CesiumWidget.css";

CesiumJS before version 1.114

If you are using a version of CesiumJS before 1.114 you will need to modify the config to tell it to ignore some external node dependencies. Add the build section below:

  build: {
    rollupOptions: {
      external: ["http", "https", "url", "zlib"],
    },
  },

See cesium PR #11773 for more information

Contributions

Pull requests are appreciated. Please use the same Contributor License Agreement (CLA) used for Cesium.

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Developed by the Cesium team.