property Agent.prototype.freeSockets
Usage in Deno
```typescript import { Agent } from "node:node__http.d.ts"; ```An object which contains arrays of sockets currently awaiting use by
the agent when `keepAlive` is enabled. Do not modify.
Sockets in the `freeSockets` list will be automatically destroyed and
removed from the array on `'timeout'`.
ReadOnlyDict<Socket[]>