`module.exports.Agent = require('./lib/agent')`, where agent.js ends with
`module.exports = Agent`, is the same alias plumbing as
`module.exports.Agent = Agent`: importers resolve to the class declaration
and the class registry applies, instead of storing a class value (which
classes inheriting a runtime-provided constructor, such as EventEmitter
subclasses, do not have). The statement still evaluates the required
module at its position.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
