node.js exit if curl missing

apps/Node.js/install

@@ -12,7 +12,12 @@ if [ ! -z "$(cat /proc/cpuinfo | grep ARMv6)" ];then
   error "armv6 cpu not supported"
 fi
 
-"${DIRECTORY}/pkg-install" "curl" "$(dirname "$0")" || exit 1
+if ! command -v curl >/dev/null ; then
+  echo -e "\033[0;31mcurl: command not found.\e[39m
+You need to install curl first. If you are on a debian system, this command should install it:
+\e[4msudo apt install curl\e[0m"
+  exit 1
+fi
 
 #Add NodeSource repo:
 curl -sL https://deb.nodesource.com/setup_15.x | sudo -E bash - || error "Failed to add Nodesource repo!"