support for local npm packages when loading shell

plugins/node/node.load

-if test -d /usr/local/share/npm/bin
-  set PATH /usr/local/share/npm/bin $PATH
-end
-
-function __check_node_project --on-variable PWD --description 'Setup local npm binaries on directory change'
-  status --is-command-substitution; and return
-
+### Functions
+function __remove_local_npm_binaries_from_path
   set -l count 1
 
   for path in $PATH
@@ -14,10 +9,25 @@ function __check_node_project --on-variable PWD --description 'Setup local npm b
       set count (math $count + 1)
     end
   end
+end
 
+function __add_local_npm_binaries_to_path
   for path in $PWD/node_modules/*/bin
     set PATH $path $PATH
   end
+end
+
+
+### Main program
+if test -d /usr/local/share/npm/bin
+  set PATH /usr/local/share/npm/bin $PATH
+end
+
+__add_local_npm_binaries_to_path
+
+function __check_node_project --on-variable PWD --description 'Setup local npm binaries on directory change'
+  status --is-command-substitution; and return
 
-  set -e count
+  __remove_local_npm_binaries_from_path
+  __add_local_npm_binaries_to_path
 end