From 4d524df191e28fe8321e2eb7f68b230e8a92e2e1 Mon Sep 17 00:00:00 2001
From: Peter Dave Hello <hsu@peterdavehello.org>
Date: Tue, 27 Feb 2018 14:05:33 +0800
Subject: [PATCH] [Fix] Prevent install/link when no packages found, fix #1744

---
 nvm.sh | 28 ++++++++++++++++++----------
 1 file changed, 18 insertions(+), 10 deletions(-)

diff --git a/nvm.sh b/nvm.sh
index 4db2e0521f..5651dbfa5f 100644
--- a/nvm.sh
+++ b/nvm.sh
@@ -3339,19 +3339,27 @@ nvm() {
       LINKS="${NPMLIST##* //// }"
 
       nvm_echo "Reinstalling global packages from $VERSION..."
-      nvm_echo "$INSTALLS" | command xargs npm install -g --quiet
+      if [ -n "${INSTALLS}" ]; then
+        nvm_echo "$INSTALLS" | command xargs npm install -g --quiet
+      else
+        nvm_echo "No global packages found..."
+      fi
 
       nvm_echo "Linking global packages from $VERSION..."
-      (
-        set -f; IFS='
+      if [ -n "${LINKS}" ]; then
+        (
+          set -f; IFS='
 ' # necessary to turn off variable expansion except for newlines
-        for LINK in $LINKS; do
-          set +f; unset IFS # restore variable expansion
-          if [ -n "$LINK" ]; then
-            (nvm_cd "$LINK" && npm link)
-          fi
-        done
-      )
+          for LINK in $LINKS; do
+            set +f; unset IFS # restore variable expansion
+            if [ -n "$LINK" ]; then
+              (nvm_cd "$LINK" && npm link)
+            fi
+          done
+        )
+      else
+        nvm_echo "No global packages found..."
+      fi
     ;;
     "clear-cache" )
       command rm -f "$NVM_DIR/v*" "$(nvm_version_dir)" 2>/dev/null