Backwards compatibility in the javascript world isn't great. If you stop updating for a couple of years, half your libraries have incompatible API changes. Then

Backwards compatibility in the javascript world isn't great. If you stop updating for a couple of years, half your libraries have incompatible API changes. Then something like a node or UI framework update comes along and makes you update them all at once to work on the new version, and you're rewriting half your application just to move to a non-vulnerable version of your core dependency.