ember-element-resize-detector is an Ember addon that provides a highly‑optimized, cross‑browser listener for detecting size changes on DOM elements. It exposes a `{{resize‑detector}}` component and a `resize‑detector` service, letting developers easily register callbacks (e.g., Ember actions) that fire with the new width and height whenever a selected element is resized. The addon is intended for Ember.js developers who need reliable element‑resize notifications without resorting to heavyweight hacks.