Update command checks to use a faster method

zsh/plugins/fnm.plugin.zsh

@@ -1,6 +1,6 @@
 #!/usr/bin/env zsh
 
 # Setup Fast Node Manager
-if type fnm > /dev/null; then
+if (( ${+commands[fnm]} )); then
   eval "$(fnm env --use-on-cd)"
 fi

zsh/plugins/fzf.plugin.zsh

@@ -1,6 +1,6 @@
 #!/usr/bin/env zsh
 
 # Setup fzf completions
-if type fzf > /dev/null; then
+if (( ${+commands[fzf]} )); then
   eval "$(fzf --zsh)"
 fi

zsh/plugins/github-copilot.plugin.zsh

@@ -2,7 +2,7 @@
 
 # Setup GitHub Copilot
 # first check we even have the genereic `gh` command
-if type gh > /dev/null; then
+if (( ${+commands[gh]} )); then
   # Now check we have the copilot plugin installed with `gh`
   if gh extension list | rg copilot -c > /dev/null; then
     eval "$(gh copilot alias -- zsh)"

zsh/plugins/mcfly.plugin.zsh

@@ -1,6 +1,6 @@
 #!/usr/bin/env zsh
 
 # McFly
-if type mcfly > /dev/null; then
+if (( ${+commands[mcfly]} )); then
   eval "$(mcfly init zsh)"
 fi

zsh/plugins/ngrok.plugin.zsh

@@ -1,6 +1,6 @@
 #!/usr/bin/env zsh
 
 # ngrok completions
-if command -v ngrok &>/dev/null; then
+if (( ${+commands[ngrok]} )); then
   eval "$(ngrok completion)"
 fi

zsh/plugins/thefuck.plugin.zsh

@@ -1,6 +1,6 @@
 #!/usr/bin/env zsh
 
 # Init the fuck
-if type thefuck > /dev/null; then
+if (( ${+commands[thefuck]} )); then
   eval "$(thefuck --alias)"
 fi

zsh/plugins/zoxide.plugin.zsh

@@ -1,6 +1,6 @@
 #!/usr/bin/env zsh
 
 # zoxide - a better `cd` command
-if command -v zoxide &>/dev/null; then
+if (( ${+commands[zoxide]} )); then
   eval "$(zoxide init zsh)"
 fi