How to check if Cypress is running in test runner (cypress open) vs cypress run?

[bvandercar]

Does Cypress have a variable I can grab to determine if it's running via cypress open or cypress run? Or any other ideas on how I can determine this? Right now I'm using Cypress.browser.isHeadless , but this wouldn't work if I wanted to run cypress run --headed

[bvandercar]

Found it-- Cypress.config('isInteractive')