fix jslint issue

lib/aws-sns-lifecycle.js

@@ -6,9 +6,15 @@ const {LifeCycleEvents} = require('./constants');
 const express = require('express');
 const app = express();
 const getString = bent('string');
-import { SNSClient, SubscribeCommand, UnsubscribeCommand } from "@aws-sdk/client-sns";
+const {
+  SNSClient,
+  SubscribeCommand,
+  UnsubscribeCommand } = require('@aws-sdk/client-sns');
 const snsClient = new SNSClient({ region: process.env.AWS_REGION, apiVersion: '2010-03-31' });
-import { AutoScalingClient, DescribeAutoScalingGroupsCommand, CompleteLifecycleActionCommand } from "@aws-sdk/client-auto-scaling";
+const {
+  AutoScalingClient,
+  DescribeAutoScalingGroupsCommand,
+  CompleteLifecycleActionCommand } = require('@aws-sdk/client-auto-scaling');
 const autoScalingClient = new AutoScalingClient({ region: process.env.AWS_REGION, apiVersion: '2011-01-01' });
 const {Parser} = require('xml2js');
 const parser = new Parser();
@@ -157,12 +163,13 @@ class SnsNotifier extends Emitter {
   completeScaleIn() {
     assert(this.scaleInParams);
     autoScalingClient.send(new CompleteLifecycleActionCommand(this.scaleInParams))
-    .then(() => {
-      this.logger.info({response}, 'Successfully completed scale-in action');
-    })
-    .catch((err) => {
-      this.logger.error({err}, 'Error completing scale-in');
-    })
+      .then((data) => {
+        this.logger.info({data}, 'Successfully completed scale-in action');
+        return 0;
+      })
+      .catch((err) => {
+        this.logger.error({err}, 'Error completing scale-in');
+      });
   }
 
   describeInstance() {
@@ -171,14 +178,14 @@ class SnsNotifier extends Emitter {
       autoScalingClient.send(new DescribeAutoScalingGroupsCommand({
         InstanceIds: [this.instanceId]
       }))
-      .then((data) => {
-        this.logger.info({data}, 'SnsNotifier: describeInstance');
-        resolve(data);
-      })
-      .catch((err) => {
-        his.logger.error({err}, 'Error describing instances');
-        reject(err);
-      })
+        .then((data) => {
+          this.logger.info({data}, 'SnsNotifier: describeInstance');
+          return resolve(data);
+        })
+        .catch((err) => {
+          this.logger.error({err}, 'Error describing instances');
+          reject(err);
+        });
     });
   }