StaticIntervalTree intervalsOverlappingInterval is not working with a tree generated by an object

[jpbmdev]

// Using specialized getters
const StaticIntervalTree = require("mnemonist/static-interval-tree");

const figures = [
{ name: "John II of Cyprus", birth: 1418, death: 1458 },
{ name: "Helena Palaiologina", birth: 1428, death: 1458 },
{ name: "Ashikaga Yoshikatsu", birth: 1434, death: 1443 },
];

const tree = StaticIntervalTree.from(figures, [(f) => f.birth, (f) => f.death]);

const result = tree.intervalsOverlappingInterval([1420, 1430]); //Expected [ { name: "Helena Palaiologina", birth: 1428, death: 1458 }, { name: "John II of Cyprus", birth: 1418, death: 1458 } ] result [ ]

console.log(result);

// Using specialized getters

const figures2 = [
[1418, 1458],
[1428, 1458],
[1434, 1443],
];

const tree2 = StaticIntervalTree.from(figures2);

const result2 = tree2.intervalsOverlappingInterval([1420, 1430]);

console.log(result2); //Expected [ [ 1428, 1458 ], [ 1418, 1458 ] ] result [ [ 1428, 1458 ], [ 1418, 1458 ] ]