Merge e87ec0c0132a74932f469816979137fe40fe3323 into 5dc31ac51b08f910a2de1596b37a6a3dddd5e7b7

nvm.sh

@@ -700,10 +700,12 @@ nvm_ensure_version_installed() {
       nvm_err "N/A: version \"${PREFIXED_VERSION:-$PROVIDED_VERSION}\" is not yet installed."
     fi
     nvm_err ""
-    if [ "${IS_VERSION_FROM_NVMRC}" != '1' ]; then
-        nvm_err "You need to run \`nvm install ${PROVIDED_VERSION}\` to install and use it."
-      else
-        nvm_err 'You need to run `nvm install` to install and use the node version specified in `.nvmrc`.'
+    if [ "${PROVIDED_VERSION}" = 'lts' ]; then
+      nvm_err '`lts` is not an alias - you may need to run `nvm install --lts` to install and `nvm use --lts` to use it.'
+    elif [ "${IS_VERSION_FROM_NVMRC}" != '1' ]; then
+      nvm_err "You need to run \`nvm install ${PROVIDED_VERSION}\` to install and use it."
+    else
+      nvm_err 'You need to run `nvm install` to install and use the node version specified in `.nvmrc`.'
     fi
     return 1
   fi

test/installation_node/install from source with thread parameter

@@ -25,8 +25,11 @@ nvm run $NVM_TEST_VERSION --version | grep $NVM_TEST_VERSION || "'nvm run $NVM_T
 # Remove the stuff we're clobbering.
 [ -e ../../$NVM_TEST_VERSION ] && rm -R ../../$NVM_TEST_VERSION
 
-# Install from source with 2 make jobs (and swapped arg order)
-nvm install -j 2 -s $NVM_TEST_VERSION || die "'nvm install -s $NVM_TEST_VERSION' failed"
+# Speed up test for non-CI environment which may have more CPU threads
+[ -z "${CI-}"] && nvm_get_make_jobs
+
+# Install from source with multiple make jobs (and swapped arg order)
+nvm install -j ${NVM_MAKE_JOBS-:2} -s $NVM_TEST_VERSION || die "'nvm install -s $NVM_TEST_VERSION' failed"
 
 # Check
 [ -d ../../$NVM_TEST_VERSION ]

test/slow/nvm use/Running 'nvm use lts' shows actionable error

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+set -ex
+
+die () { echo "$@" ; exit 1; }
+
+\. ../../../nvm.sh
+
+# Deactivate any active node version
+nvm deactivate >/dev/null 2>&1 || die 'deactivate failed'
+
+# Attempt to use 'lts' without '--' and capture the error message
+ERROR_OUTPUT=$(nvm use lts 2>&1) || true
+
+EXPECTED_ERROR='`lts` is not an alias - you may need to run `nvm install --lts` to install and `nvm use --lts` to use it.'
+
+# Check if the error message matches the expected output
+echo "$ERROR_OUTPUT" | grep -q "$EXPECTED_ERROR" \
+  || die "Expected error message not found. Got: $ERROR_OUTPUT"