Bug Fixes

• move 'offline' event listener at the top (8a2f5a3)
• only remove the event listener if it exists (9b3c9ab)
• do not send a packet on an expired connection (#5134) (8adcfbf)

Performance Improvements

• do not reset the heartbeat timer on each packet (7a23dde)

Dependencies

• ws@~8.17.1 (no change)