Date: 2017may5 Language: any Q. How can I reduce the number of global variables in a codebase I inherited? A. You can convert a global variable into a global read-only function. For example if you have this javaScript:

let gMyGlobal = 123;

You can change it to:

function getMyGlobal() { return 123; }

Its still global but you know it isn't being updated. There are many other techniques.