framer-motion
Version:
A simple and powerful JavaScript animation library
31 lines (29 loc) • 835 B
JavaScript
const windowCallbacks = new Set();
let windowResizeHandler;
function createWindowResizeHandler() {
windowResizeHandler = () => {
const size = {
width: window.innerWidth,
height: window.innerHeight,
};
const info = {
target: window,
size,
contentSize: size,
};
windowCallbacks.forEach((callback) => callback(info));
};
window.addEventListener("resize", windowResizeHandler);
}
function resizeWindow(callback) {
windowCallbacks.add(callback);
if (!windowResizeHandler)
createWindowResizeHandler();
return () => {
windowCallbacks.delete(callback);
if (!windowCallbacks.size && windowResizeHandler) {
windowResizeHandler = undefined;
}
};
}
export { resizeWindow };