#!/bin/sh
test -z $1 && { echo "Usage: js 'somefunction(1)'"; exit 0; }

javascript="$*"

# if we are run as shebang, use the file as input
case "$1" in 
  */*) javascript="$(cat $1 | tail +2)"
       ;;
esac


flock /dev/browser/js -c "echo '$javascript' > /dev/browser/js; sleep 0.5; cat /dev/browser/js"

# we use flock, an awesome way to make processes read/write the same file
# while preventing 1001 concurrency issues