Angular undefined error while running ng test with environment.ts

Question

I have environment.ts in project to set env data from kubernate yaml.

export const environment = {
  PROD_URL: window["env"].prodUrl || 'http://localhost:8080/v1/'
};

While running ng test , I am getting below error.

An error was thrown in afterAll
  Uncaught TypeError: Cannot read property 'prodUrl ' of undefined
  TypeError: Cannot read property 'prodUrl ' of undefined
      at Module.AytR (http://localhost:9876/_karma_webpack_/webpack:/src/environments/environment.ts:9:30)

Answer 1

window["env"] can be null/undefined. For that case just use optional chaining.

export const environment = {
  PROD_URL: window["env"]?.prodUrl || 'http://localhost:8080/v1/'
};