browser-zoom-listener v1.1.0

browser-zoom-listener

npm install --save browser-zoom-listener

how-to-import

browserZoomListener((devicePixelRatio: number) => void): void

// like so:
browserZoomListener((dpr: number) => console.log(dpr));

Probably also worth noting that the callback is only run at a maximum of once per frame.

https://coalpha.github.io/browser-zoom-listener/example/