feat: check nodejs.

script.sh

@@ -1,28 +1,33 @@
 set -e # 报错后不继续执行
-LOCAL_VERSION=$(node -v)
-REQUIRED_VERSION='v14.14.0'
-echo 'Checking nodejs version, serverless-dev requires nodejs >= 14.14.0.'
-echo "Local nodejs's version is" $LOCAL_VERSION.
-function version_compare() {
-    if [[ "$1" == "$2" ]]; then
-        echo 0 # 本地版本等于要求版本
-        return
-    fi
-    if [[ "$(printf '%s\n' "$1" "$2" | sort -V | head -n1)" == "$1" ]]; then
-        echo 1 # 本地版本小于要求版本
+if ! which node > /dev/null; then
+    echo "Node is not installed, serverless-dev requires nodejs >= 14.14.0."
+    echo "You can install it manually or add actions/setup-node@v4 before actions/setup-s-aliyun in your .yaml/.yml file."
+else
+    LOCAL_VERSION=$(node -v)
+    REQUIRED_VERSION='v14.14.0'
+    echo 'Checking nodejs version, serverless-dev requires nodejs >= 14.14.0.'
+    echo "Local nodejs's version is" $LOCAL_VERSION.
+    function version_compare() {
+        if [[ "$1" == "$2" ]]; then
+            echo 0 # 本地版本等于要求版本
+            return
+        fi
+        if [[ "$(printf '%s\n' "$1" "$2" | sort -V | head -n1)" == "$1" ]]; then
+            echo 1 # 本地版本小于要求版本
+        else
+            echo 0 # 本地版本大于要求版本
+        fi
+    }
+    result=$(version_compare "$LOCAL_VERSION" "$REQUIRED_VERSION")
+    if [ "$result" == 0 ]; then
+        echo 'Nodejs checked, serverless-devs installing.'
+        npm i @serverless-devs/s -g --registry=https://registry.npmmirror.com
+        s config add --AccountID $1 --AccessKeyID $2 --AccessKeySecret $3 -a $4 -f
+        echo '################################################'
+        echo 'Serverless-devs has been installed successfully.'
+        echo 'The access has been configured automatically, use "s config get" to check.'
+        echo '################################################'
     else
-        echo 0 # 本地版本大于要求版本
+        echo "Serverless-dev requires nodejs >= 14.14.0, please update your local nodejs's version."
     fi
-}
-result=$(version_compare "$LOCAL_VERSION" "$REQUIRED_VERSION")
-if [ "$result" == 0 ]; then
-    echo 'Nodejs checked, serverless-devs installing.'
-    npm i @serverless-devs/s -g --registry=https://registry.npmmirror.com
-    s config add --AccountID $1 --AccessKeyID $2 --AccessKeySecret $3 -a $4 -f
-    echo '################################################'
-    echo 'Serverless-devs has been installed successfully.'
-    echo 'The access has been configured automatically, use "s config get" to check.'
-    echo '################################################'
-else
-    echo "Serverless-dev requires nodejs >= 14.14.0, please update your local nodejs's version."
-fi
+fi