Method constructor

lib/internal/socket_list.js:9–14

(child, key)

// This object keeps track of the sockets that are sent
class SocketListSend extends EventEmitter {
  constructor(child, key) {
    super();
    this.key = key;
    this.child = child;
    child.once('exit', () => this.emit('exit', this));
  }

  _request(msg, cmd, swallowErrors, callback) {
    const self = this;