get rid of Serverless created logGroups

deleteLogGroup.js

'use strict';

const AWS = require('aws-sdk');
const cloudWatchLogs = new AWS.CloudWatchLogs({
  apiVersion: '2014-03-28',
  region: 'us-east-1'
});


const deleteCWLogs = (logGroupNamePrefix, token) => {
  let nextToken =  token || undefined;
  let params = { limit: 50, logGroupNamePrefix, nextToken };
  return cloudWatchLogs.describeLogGroups(params).promise()
    .then((data) => {
      const promises = []; 
      data.logGroups.forEach((element) => {
        const logGroup = element.logGroupName;
        promises.push(cloudWatchLogs.deleteLogGroup({ logGroupName: logGroup }).promise());
      })  
      nextToken = data.nextToken;
      return Promise.all(promises);
    })  
   .then((res) => {
     if (nextToken) return deleteCWLogs(logGroupNamePrefix, nextToken);
   }); 
}

deleteCWLogs('/aws/lambda/ad-pipeline-deathweaselx86', undefined)
 .catch(err => console.log("didn't work", err, "\n", err.stack));
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