Code » If I see code along the lines of: const ref = application + ':' + endpoint then I'm going to request that you provide a rigorous proof that neither of the strings application or endpoint can ever contain a colon. In accordance with my belief that code should be obviously correct, not provably correct, your proof will look something like this: if (application.includes(':') || endpoint.includes(':')) { throw Error() } This is because I have been down this road too many times. There are ...