in src/barChart.ts [416:429]
function getDataValueForOverlapValue(values, overlapIndex) {
let index = -1;
for (let i = 0; i < values.length; i++) {
if (values[i].source.index === overlapIndex) {
index = i;
break;
}
}
if (index !== -1) {
return values[index].values;
} else {
return [];
}
}