graph.js will crash if there's a node named hasOwnProperty

[ddadamhooper]

The bug is pretty clear: a node named hasOwnProperty will make the this._nodes.hasOwnProperty(...) calls fail.

graphlib/lib/graph.js

Line 195 in 19cd7c0

if (this._nodes.hasOwnProperty(v)) {

As seen in this little big of JS trivia:

const _nodes = { hasOwnProperty: "hi" };
_nodes.hasOwnProperty("anything"); // Uncaught TypeError: _nodes.hasOwnProperty is not a function

Fix: should be Object.hasOwn(this._nodes, ...). See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwn#problematic_cases_for_hasownproperty

[rustedgrail]

Fixing this here and in Dagre

#202