src/js/lib/uikit-src/uikit-core.js
function scheduleFlush(fastdom) {
    if (!fastdom.scheduled) {
        fastdom.scheduled = true;
        fastdom.raf(flush.bind(null, fastdom));
    }
}
function scheduleFlush(fastdom) {
    if (!fastdom.scheduled) {
        fastdom.scheduled = true;
        fastdom.raf(flush.bind(null, fastdom));
    }
}
Schedules a new read/write
batch if one isn't pending.

@private