zmodem.js-适用于JavaScript的ZMODEM 概要 let zsentry = new Zmodem.Sentry( { to_terminal(octets) { .. }, //i.e. send to the terminal sender(octets) { .. }, //i.e. send to the ZMODEM peer on_detect(detection) { .. }, //for when Sentry detects a new ZMODEM on_retract() { .. }, //for when S