Set bash to be more strict

⚡

@@ -1,13 +1,14 @@
 #!/usr/bin/env bash
+set -euo pipefail
 
 main() {
   [[ $(type -t _verify-prerequisites) == "function" ]] && ! _verify-prerequisites && exit 1
 
   redefine-functions-defined-with-selector-16
 
-  command="$1"
-  shift
-  if [[ $(type -t "⚡$command") == "function" ]]; then
+  if [[ $(type -t "⚡${1:-}") == "function" ]]; then
+    command="$1"
+    shift
     ⚡$command "$@"
   else
     ⚡help
@@ -65,7 +66,7 @@ _wrapper() {
     esac
   done
 
-  while [[ -n "$1" && "$1" != "--" ]]; do
+  while [[ -n "${1:-}" && "$1" != "--" ]]; do
     shift
   done
   shift