The **add‑event‑listener** package provides a tiny, cross‑browser wrapper that lets you attach and detach event listeners using native `addEventListener`/`removeEventListener` in modern browsers and the legacy `attachEvent` in IE 8+, abstracting away the quirks of older environments. It’s aimed at developers who need a simple, dependency‑free way to handle events consistently across IE8+ and all newer browsers, without worrying about capture‑mode limitations or polyfills.