Function syncRect

src/uPlot.js:3083–3090

(defer = false)

	});

	function syncRect(defer = false) {
		if (defer)
			rect = null;
		else {
			rect = over.getBoundingClientRect();
			fire("syncRect", rect);
		}
	}

	function mouseMove(e, src, _l, _t, _w, _h, _i) {
		if (cursor._lock)