# Cesium-engine jest setup

**URL:** <https://community.cesium.com/t/cesium-engine-jest-setup/28498>\
**Category:** CesiumJS\
**Created:** [December 4, 2023, 3:36am UTC](https://community.cesium.com/t/cesium-engine-jest-setup/28498 "2023-12-04T03:36:09Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![ka\_sc](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/ka_sc/32/2397_2.png) [@ka\_sc](https://community.cesium.com/u/ka_sc)\
**Post date:** [December 4, 2023, 3:36am UTC](https://community.cesium.com/t/cesium-engine-jest-setup/28498/1 "2023-12-04T03:36:09Z")

</div>

Should be easy but i cannot get mine working. Somebody has a good Cesium engine jest setup?  
Bonus points for it using typescript 😃

---

<div class="post-metadata">

**Author:** ![ka\_sc](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/ka_sc/32/2397_2.png) [@ka\_sc](https://community.cesium.com/u/ka_sc)\
**Post date:** [December 4, 2023, 5:48am UTC](https://community.cesium.com/t/cesium-engine-jest-setup/28498/2 "2023-12-04T05:48:28Z")

</div>

in case anyone is trying jest.config

> **[ESM Support | ts-jest](https://kulshekhar.github.io/ts-jest/docs/guides/esm-support/)**
>
> To use ts-jest with ESM support:

```auto
module.exports = {
  testEnvironment: 'node',
  preset: "ts-jest/presets/default-esm", // or other ESM presets,
  moduleNameMapper: {
    "^(\\.{1,2}/.*)\\.js$": "$1"
  },
  extensionsToTreatAsEsm: [".ts"],
  transform: {
    // '^.+\\.[tj]sx?$' to process js/ts with `ts-jest`
    // '^.+\\.m?[tj]sx?$' to process js/ts/mjs/mts with `ts-jest`
    "^.+\\.tsx?$": [
      "ts-jest",
      {
        "useESM": true
      }
    ]
  }
};

```