1. A concise explanation of the problem you're experiencing.
assets url not change to node_modules/cesium after add blow code to main.ts
window['CESIUM_BASE_URL'] = '/assets/cesium/';
2. A minimal code example. If you've found a bug, this helps us reproduce and repair it.
angular not add 'assets/cesium' to cesium rescource.
just like
http://localhost:4200/Widgets/Images/ImageryProviders/bingAerial.png
if you change the code, please update document
https://cesium.com/blog/2018/03/12/cesium-and-angular/#Add-Cesium-to-an-Angular-app
3. Context. Why do you need to do this? We might know a better way to accomplish your goal.
I just want add cesium to angular.
4. The Cesium version you're using, your operating system and browser.
cesium 1.44.0
windows 10 pro x64
chrome 66.0.3359.139 x64