alphaNumericCompare(a, b) {
let ax = [], bx = [];
a.replace(/(\d+)|(\D+)/g, function (_, $1, $2) { ax.push([$1 || Infinity, $2 || '']) });
b.replace(/(\d+)|(\D+)/g, function (_, $1, $2) { bx.push([$1 || Infinity, $2 || '']) });
while (ax.length && bx.length) {
let an = ax.shift();
let bn = bx.shift();
let nn = (an[0] - bn[0]) || an[1].localeCompare(bn[1]);
if (nn) {
return nn;
}
}
return ax.length - bx.length;
}