Function callback

docs/app/js/sanddance-app.js:20863–20876

(userCall)

        if (options && typeof options.leading === "boolean") leading = options.leading;
        if (options && typeof options.trailing === "boolean") trailing = options.trailing;
        var callback = function(userCall) {
            var now = Date.now();
            var delta = now - lastExecuteTime;
            var waitLength = leading ? waitMS - delta : waitMS;
            if (delta >= waitMS && (!userCall || leading)) {
                lastExecuteTime = now;
                if (timeoutId) {
                    _this.clearTimeout(timeoutId);
                    timeoutId = null;
                }
                lastResult = func.apply(_this._parent, lastArgs);
            } else if (timeoutId === null && trailing) timeoutId = _this.setTimeout(callback, waitLength);
            return lastResult;
        };
        // eslint-disable-next-line @typescript-eslint/no-explicit-any
        var resultFunction = function() {
            var args = [];