[Fix] nvm ls, nvm alias, nvm install: error when an LTS name is invalid

nvm-exec

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-DIR="$(dirname "$(realpath "${BASH_SOURCE[0]}")")"
+DIR="$(command cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
 unset NVM_CD_FLAGS
 

nvm.sh

@@ -4051,14 +4051,8 @@ nvm() {
           nvm_echo "Running node ${VERSION}$(nvm use --silent "${VERSION}" && nvm_print_npm_version)"
         fi
       fi
-
-      NVM_EXEC="${NVM_DIR}/nvm-exec"
-      if [ ! -f "${NVM_EXEC}" ]; then
-        NVM_EXEC="$(dirname "${BASH_SOURCE[0]-}")/nvm-exec"
-      fi
-      NODE_VERSION="${VERSION}" "${NVM_EXEC}" "$@"
+      NODE_VERSION="${VERSION}" "${NVM_DIR}/nvm-exec" "$@"
     ;;
-
     "ls" | "list")
       local PATTERN
       local NVM_NO_COLORS

test/slow/nvm exec/Running 'nvm exec --lts' when NVM_DIR differs from nvm

@@ -1,18 +0,0 @@
-#!/bin/sh
-
-set -ex
-
-die () { echo "$@" ; exit 1; }
-
-INSTPATH="$(mktemp -p "$(pwd)" -d)"
-trap 'test ! -z "${INSTPATH-}" && test -d "$INSTPATH" && rm -rf "$INSTPATH"' EXIT
-declare -x NVM_DIR=$INSTPATH
-\. ../../../nvm.sh
-
-nvm install --lts || die 'nvm install --lts failed'
-nvm exec --lts npm --version || die "`nvm exec` failed to run"
-declare -x NODE_VERSION="$(nvm exec --lts --silent node --version)"
-
-ln -s ../../../../nvm-exec "$INSTPATH/nvm-exec" || die "failed to create a symlink to $INSTPATH/"
-"$INSTPATH/nvm-exec" npm ls > /dev/null || die "`nvm exec` failed to run using nvm-exec helper"
-