cy.clipboard is not a function

[atom238]

Hello,
I upgraded cytoscape.js from 3.21.0 to 3.29.3 and after that I see error in browser console "TypeError: cy.clipboard is not a function at HTMLDocument.".
My code:

<script src="https://unpkg.com/cytoscape-undo-redo/cytoscape-undo-redo.js"></script>
<script src="src/extensions/clipboard/cytoscape-clipboard.js"></script>
...
var cb = cy.clipboard();
document.addEventListener("keydown", function (e) {
	if (e.ctrlKey && e.target.nodeName === 'BODY')
		if (e.which == 67)
			cy.clipboard().copy(cy.$(":selected"));
		else if (e.which == 86)
			ur.do("paste");
		else if (e.which == 65) {
	cy.elements().select();
	e.preventDefault();
	}
});

[ugurdogrusoz]

@atom238 there hasn't been any work on this extension for a while, you might be right. we do not have any resources to work on this right now; feel free to create a PR on the unstable branch if you like.