require("dotenv").config();
const FORCEUPDATE = String(process.env.UPDATESILENCE_FORCEUPDATE) == "true"
The dotenv module makes the process.env property available.The name given after .env is the name of a "property" in the .env file that the dotenv module reads from.If it doesn't exist, then process.env.WHATEVERNAME will return undefined, which then evaluates to String("undefined"), giving "undefined".
Since the comparison "undefined" == "true" is false, this makes FORCEUPDATE false.However, if process.env.WHATEVERNAME has a value set, and if the value is true, then String("true") will return true, and the comparison will return true.
In 2017, with the release of Delphi 10.2 Tokyo, Embarcadero introduced a specialized implementation of the Observer pattern into the System.Classes unit. While it has been in the wild for 9 years, it remains a "hidden" architecture for many, primarily because it serves as the invisible engine behind LiveBindings. Other than live bindings, you can also use the Observer pattern as a way to update component settings to the Windows registry, an .ini file, or persist it elsewhere.
System.Classes