run prettier on preinstall, fix errant return
run prettier on preinstall, fix errant return

lgeiger/zmq-prebuilt,interpretor/zeromq.js,interpretor/zeromq.js,interpretor/zeromq.js,interpretor/zeromq.js,lgeiger/zmq-prebuilt,lgeiger/zmq-prebuilt,interpretor/zeromq.js,lgeiger/zmq-prebuilt,lgeiger/zmq-prebuilt