text: import * as dynamoDbLib from './libs/dynamodb-lib'
  import { success, failure } from './libs/response-lib'
  
  export async function main (event, context) {
    const params = {
      TableName: process.env.tableName,
      // 'Key' defines the partition key and sort key of the item to be retrieved
      // - 'userId': Identity Pool identity id of the authenticated user
      // - 'noteId': path parameter
      Key: {
        userId: event.requestContext.identity.cognitoIdentityId,
        noteId: event.pathParameters.id
      }
    }
  
    try {
      const result = await dynamoDbLib.call('get', params)
      if (result.Item) {
        // Return the retrieved item
        return success(result.Item)
      } else {
        return failure({ status: false, error: 'Item not found.' })
      }
    } catch (e) {
      return failure({ status: false })
    }
  }
  