Callback in _onviewbox not called

[ralphtheninja]

cb below is never called:

mixmap-peermaps/index.js

Lines 113 to 131 in 6edffea

	P.prototype._onviewbox = function (bbox, zoom, cb) {
	var self = this
	var boxes = self._plan.update(bbox)
	for (var i = 0; i < boxes.length; i++) {
	self._plan.add(boxes[i])
	}
	self._zoom = zoom
	self._getDb(function (db) {
	boxes.forEach(bbox => {
	db.query(bbox, { trace })
	.then(q => self._loadQuery(bbox, q))
	.catch(e => self._error(e))
	function trace(tr) {
	self._trace[tr.file] = tr
	}
	})
	self._scheduleRecalc()
	})
	}

which results in the following code in mixmaps not being called

https://github.com/peermaps/mixmap/blob/b65a6794d500eb5f3af03f733d8523c8cd9d19c4/lib/map.js#L107-L142