TypeError: Tree is not a constructor

`import findIntersections from 'bentley-ottman-sweepline';`
 ` const test = [
      [[0, 1], [3, 1]],
      [[2, 0], [2, 2]],
    ];`
    `try {
      const intersectionz = findIntersections(test);
      console.log(intersectionz);
    } catch (e) {
      console.error(e);
    }`
`
`TypeError: Tree is not a constructor`