Revert "Optimize lazy loading performance (#76)"

This reverts commit a0f0a2c.

zsh-nvm.plugin.zsh

@@ -22,6 +22,20 @@ _zsh_nvm_install() {
   $(builtin cd "$NVM_DIR" && git checkout --quiet "$(_zsh_nvm_latest_release_tag)")
 }
 
+_zsh_nvm_global_binaries() {
+
+  # Look for global binaries
+  local global_binary_paths="$(echo "$NVM_DIR"/v0*/bin/*(N) "$NVM_DIR"/versions/*/*/bin/*(N))"
+
+  # If we have some, format them
+  if [[ -n "$global_binary_paths" ]]; then
+    echo "$NVM_DIR"/v0*/bin/*(N) "$NVM_DIR"/versions/*/*/bin/*(N) |
+      xargs -n 1 basename |
+      sort |
+      uniq
+  fi
+}
+
 _zsh_nvm_load() {
 
   # Source nvm (check if `nvm use` should be ran after load)
@@ -71,7 +85,7 @@ _zsh_nvm_lazy_load() {
   if [[ "$NVM_NO_USE" == true ]]; then
     global_binaries=()
   else
-    global_binaries=("$NVM_DIR"/v0*/bin/*(N:t) "$NVM_DIR"/versions/*/*/bin/*(N:t))
+    global_binaries=($(_zsh_nvm_global_binaries))
   fi
 
   # Add yarn lazy loader if it's been installed by something other than npm
@@ -81,22 +95,19 @@ _zsh_nvm_lazy_load() {
   global_binaries+=('nvm')
   global_binaries+=($NVM_LAZY_LOAD_EXTRA_COMMANDS)
 
-  # Deduplicate
-  typeset -U global_binaries
-
   # Remove any binaries that conflict with current aliases
   local cmds
-  IFS=$'\n' cmds=($(whence -w -- "${global_binaries[@]}" 2> /dev/null))
-  unset IFS
-  cmds=(${cmds#*": alias"})
-  cmds=(${(@q-)cmds%": "*})
+  cmds=()
+  for bin in $global_binaries; do
+    [[ "$(which $bin 2> /dev/null)" = "$bin: aliased to "* ]] || cmds+=($bin)
+  done
 
   # Create function for each command
   for cmd in $cmds; do
 
     # When called, unset all lazy loaders, load nvm then run current command
     eval "$cmd(){
-      unset -f ${cmds[@]} > /dev/null 2>&1
+      unset -f $cmds > /dev/null 2>&1
       _zsh_nvm_load
       $cmd \"\$@\"
     }"