[mmastrac]

Avoid globals at all costs - use IIFE [1] instead, wrapping your function in parenthesis and invoking it right away.

[1] https://developer.mozilla.org/en-US/docs/Glossary/IIFE

[recursive]

If you have access to `let`, you can just put `let` declarations into a block. No need for a function to establish scope.

[an1sotropy]

When, today, does it make more sense to organize things around IIFEs and not ES6 modules?

[WorldMaker]

It's 2022, you can use ES2015 modules now. We can leave IIFE to the dustbin of the past.

[jbverschoor]

And then get coworkers to remove it because they don’t understand that you can create scopes like that

[throw_m239339]

    {
        let foo = 1
    };
    // foo is undefined here