Added install Node function

Necessary to ensure Node is installed using the latest stable release
by default.

bin/install_node_packages

@@ -10,7 +10,7 @@ IFS=$'\n\t'
 SCRIPT_PATH="$MAC_OS_CONFIG_PATH/bin/install_node_packages"
 
 if [[ -x "$SCRIPT_PATH" ]]; then
-  check_npm_install
+  install_node
   "$SCRIPT_PATH"
 else
   printf "WARNING: Node packages install script does not exist or is not executable.\n"

lib/installers.sh

@@ -188,6 +188,15 @@ install_program() {
 }
 export -f install_program
 
+# Installs Node.
+# Parameters: None.
+install_node() {
+  if ! command -v fnm > /dev/null; then
+    $(get_homebrew_bin_root)/fnm install --lts
+  fi
+}
+export -f install_node
+
 # Installs Ruby.
 # Parameters: None.
 install_ruby() {