xrsh-com/com/isoterminal/mnt/jsh

#!/bin/sh
# usage: jsh <function> [arg1] [arg2] ...
#         
# 'jsh prompt question answer' executes: js prompt('question','answer') )

to_js(){
  printf "%s(" "$1"
  shift
  for arg in "$@"; do
    case "$arg" in
      (*[\.0-9]*) 
        printf '%s,' "$arg"
        ;;
      (*)
	printf '"%s",' "$arg"
        ;;
    esac
  done
  printf ")\n"
}

# run argument as js
test -z $1 || {
  func=$(to_js "$@")
  func=${func/,)/)}
  js "$func"
}

# otherwise start repl
while true; do
  echo -n "$(printf "\033[0m")jsh> $(printf "\033[0m")"
  read input
  test $input = exit && exit
  js "$input"
done