fix: check node error

Signed-off-by: MiaoWoo <admin@yumc.pw>

tera/run.sh

@@ -1,5 +1,4 @@
 ROOT=$(pwd)
-NODE=$(which node)
 clear
 set -e
 echo "=============================="
@@ -17,7 +16,7 @@ echo $(date +%s) > .lock
 echo "程序将在 3秒 后运行... Ctrl + C 取消运行..."
 sleep 2
 echo "开始检测安装依赖..."
-if [[ -z "${NODE}" ]]; then
+if [[ -z "$(which node)" ]]; then
     if [[ ! -d node ]]; then
         echo "未安装NodeJS 开始下载二进制包 请稍候..."
         curl -o node.zip https://nodejs.org/dist/v10.16.0/node-v10.16.0-win-x64.zip
@@ -33,6 +32,9 @@ if [[ -z "${NODE}" ]]; then
         read
         exit 1
     fi
+else
+    NODE=node
+    NPM=npm
 fi
 echo "NodeJS 二进制版本: $(${NODE} -v)"
 if [[ ! -d tera ]]; then