I would like to enforce that variables and properties with a boolean use the prefix is, has, can, did, and will. For example: .visible → .isVisible.

I often see .visible, .open, etc, in code, and it's not clear whether they are booleans, contain something visible/open, or whether they contain a function that makes something visible or opens something.

Fail

const visible = true;

const rainbow = false;

Pass

const isVisible = true;

const hasRainbow = false;