/**
 * Promise microtask debouncer used by Popper.js v2
 * This is no longer exported in Floating UI (Popper.js v3)
 * https://github.com/floating-ui/floating-ui/blob/v2.x/src/utils/debounce.js
 * @param fn function that will be debounced
 */ export function debounce(fn) {
    let pending;
    return ()=>{
        if (!pending) {
            pending = new Promise((resolve)=>{
                Promise.resolve().then(()=>{
                    pending = undefined;
                    resolve(fn());
                });
            });
        }
        return pending;
    };
}