how can we use environment variable in angular version >=2

Question

I am now reading the angular4 doc, and noticed, there is one folder, environments, and under which, there are multiple environment files, such as environment.ts, environment

Answer 1

Assuming the environment.ts file exports, for example, a constant named environment, then first you import the constant (using the appropriate path):

import { environment } from '../environment';

Then in code you just use the constant:

let mything = environment.mything;