You'd be able to access

Cypress.env('ENVIRONMENT')

within your specs, but

cypress.config.ts

runs in node as part of the setup process, so you don't have access to the

Cypress

object yet If you need to get it in there, you can reach it with

process.env.CYPRESS_ENVIRONMENT

, though at that point I'd probably just pass it in as

ENVIRONMENT

. You can also take that variable and assign it to so that you can access it in Cypress.env later:

setupNodeEvents(_on, config) {
      config.env.ENVIRONMENT = process.env.ENVIRONMENT;

      return config;
    },

Hope that helps!