Nushell wrapper for piping into nushell from zsh

pipe-to-nushell.zsh

# Piping into Nushell
# Most of my workflow is in zsh, but I love using the tools provided by nushell.
# I created the following wrapper for the `nu` command to allow me to pipe into nushell at any point.

# For example, I can run any command in bash then pipe it to `nu` followed by any nu commands.
# ```
# aws lambda list-functions --query 'Functions' | nu 'from json | select FunctionName'
# ```

# usage: ls | nu 'lines'
function nu {
  if [ -p /dev/stdin ]; then
    nu_cmds="$@"
    if [ -n "$nu_cmds" ]; then
      nu_cmds=" | $nu_cmds"
    fi

    # Create temporary named pipe
    local pipe=$(mktemp -u)
    mkfifo $pipe 2>/dev/null

    # Pipe stdin to the fifo
    ( /bin/cat > "$pipe" & )

    # read from pipe in nu shell
    command nu -c '^cat '$pipe"$nu_cmds"

    # clean up pipe
    rm -f "$pipe" 2>/dev/null
  else
    command nu "$@"
  fi
}