demo bash error fallback handler for node.js developer

.bash_error

command_not_found_handle() {
  # Do not run within a pipe
  if test ! -t 1; then
    echo "command not found: $1" >&2
    return 127
  fi

  # run local npm package if exist
  cmd="node_modules/.bin/$1"
  if [ -f "$cmd" ]; then
    echo "running $cmd..." >&2
    shift
    "$cmd" $@
    return $?
  fi
  unset cmd

  ## check npx
  if [ -f ~/.config/npx/whitelist ]; then
    if [ $(egrep "^$1$" ~/.config/npx/whitelist | wc -l) != 0 ]; then
      if hash npx 2>/dev/null; then
        echo "running $1 with npx" >&2
        npx $@
        return $?
      else
        echo "optional: install npm for running $1 via npx" >&2
      fi
    fi
  fi

  # use thefuck to fix it
  hash thefuck 2>/dev/null
  if [ $? == 0 ]; then
    thefuck $@ | source /dev/stdin
    return $?
  else
    echo "optional: install thefuck for typo suggestions" >&2
  fi

  # failover
  echo "command not found: $1" >&2
  return 127
}