TypeError: Class extends value undefined is not a constructor or null

I could be doing something silly, but when I've imported
import ApiClient from 'cybersource-plugin';
into my nuxt3 application in a .vue page or component I get the below error

which seems to be in the cybersource-rest-client.js file where the Agent class extends http.Agent

TypeError: Class extends value undefined is not a constructor or null
    at node_modules/cybersource-rest-client/node_modules/agent-base/dist/index.js (cybersource-rest-client.js?v=6b63f3c9:2676:36)
    at __require2 (chunk-WGAPYIUP.js?v=6b63f3c9:19:50)
    at node_modules/cybersource-rest-client/node_modules/https-proxy-agent/dist/index.js (cybersource-rest-client.js?v=6b63f3c9:2941:24)
    at __require2 (chunk-WGAPYIUP.js?v=6b63f3c9:19:50)
    at cybersource-rest-client.js?v=6b63f3c9:57284:68
    at node_modules/cybersource-rest-client/src/ApiClient.js (cybersource-rest-client.js?v=6b63f3c9:57291:7)
    at __require2 (chunk-WGAPYIUP.js?v=6b63f3c9:19:50)
    at cybersource-rest-client.js?v=6b63f3c9:161311:35
    at node_modules/cybersource-rest-client/src/index.js (cybersource-rest-client.js?v=6b63f3c9:161313:7)
    at __require2 (chunk-WGAPYIUP.js?v=6b63f3c9:19:50)

Start with the Nuxt 3 import in the .vue page or component and follow the stack trace through cybersource-rest-client.js, agent-base, https-proxy-agent, and ApiClient.js. Determine why http.Agent is undefined in this setup; done means the ApiClient import works without the reported TypeError.