lib: use ES6 class inheritance style

PR-URL: https://github.com/nodejs/node/pull/24755
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/_http_agent.js b/lib/_http_agent.js
index c90955bf0e..ac482bcfea 100644
--- a/lib/_http_agent.js
+++ b/lib/_http_agent.js
@@ -106,6 +106,7 @@ function Agent(options) {
   });
 }
 Object.setPrototypeOf(Agent.prototype, EventEmitter.prototype);
+Object.setPrototypeOf(Agent, EventEmitter);
 
 Agent.defaultMaxSockets = Infinity;