DynamoDB - Delete all records from a table

delete_all_records.js

const AWS = require("aws-sdk"); //AWS SDK
//AWS configuraton
AWS.config.update({
    region: 'us-east-2'
});
//DynamoDb client
let docClient = new AWS.DynamoDB.DocumentClient();

/**************************************************************/

var hashKey = "KEY_COLUMN_HERE";
var rangeKey = null;
var tableName = "TABLE_NAME_HERE";
var scanParams = {
    TableName: tableName,
};

docClient.scan(scanParams, (error, data) => {
    if (error) console.log(`Error in SCAN operation: ${error}`)
    else {
        data.Items.forEach((item, index) => {
            console.log(`Deleting dynamodb item at index ${index} :\n ${JSON.stringify(item, null, 4)}`);
            var params = {
                TableName: scanParams.TableName,
                Key: buildKey(item),
                ReturnValues: 'NONE', // optional (NONE | ALL_OLD)
                ReturnConsumedCapacity: 'NONE', // optional (NONE | TOTAL | INDEXES)
                ReturnItemCollectionMetrics: 'NONE', // optional (NONE | SIZE)
            };
            docClient.delete(params, function (error, data) {
                if (error) console.log(`Error in DELETE operation: ${error}`);
            });
        });
    }
});

function buildKey(obj) {
    var key = {};
    key[hashKey] = obj[hashKey]
    if (rangeKey) {
        key[rangeKey] = obj[rangeKey];
    }
    return key;
}