Avoid using "PREFIX" that cause nvm to complain about.

themes/sunrise.zsh-theme

@@ -11,9 +11,9 @@ B=$fg_no_bold[blue]
 RESET=$reset_color
 
 if [ "$USER" = "root" ]; then
-    PROMPTCOLOR="%{$R%}" PREFIX="-!-";
+    PROMPTCOLOR="%{$R%}" PROMPTPREFIX="-!-";
 else
-    PROMPTCOLOR="" PREFIX="---";
+    PROMPTCOLOR="" PROMPTPREFIX="---";
 fi
 
 local return_code="%(?..%{$R%}%? ↵%{$RESET%})"
@@ -67,7 +67,7 @@ function custom_git_prompt() {
 }
 
 # %B sets bold text
-PROMPT='%B$PREFIX %2~ $(custom_git_prompt)%{$M%}%B»%b%{$RESET%} '
+PROMPT='%B$PROMPTPREFIX %2~ $(custom_git_prompt)%{$M%}%B»%b%{$RESET%} '
 RPS1="${return_code}"
 
 ZSH_THEME_GIT_PROMPT_PREFIX="%{$Y%}‹"