Delete all item from a DynamoDB table

delete-items-from-table.js

const AWS = require('aws-sdk');
const docClient = new AWS.DynamoDB.DocumentClient({ region: 'eu-west-1' });

const getAllItemFromTable = async (table) => {
  let ExclusiveStartKey;
  let items = [];
  do {
    const params = { TableName: table };
    if (ExclusiveStartKey) {
      params.ExclusiveStartKey = ExclusiveStartKey;
    }
    const response = await docClient.scan(params).promise();
    items = [...items, ...response.Items];
    ExclusiveStartKey = response.LastEvaluatedKey;
  } while (ExclusiveStartKey);
  return items;
};

const deleteItemsFromTable = async (table, items) => {
  for (let i = 0; i < items.length; i += 25) {
    const sliced = items.slice(i, i + 25);
    const requests = sliced.map((item) =>
      ({
        DeleteRequest: {
          Key: {
            pk: item.pk,
            sk: item.sk,
          },
        },
      }),
    );

    try {
      await docClient
        .batchWrite({
          RequestItems: {
            [table]: requests,
          },
        })
        .promise();
      console.log(`Success delete from ${i} to ${i + sliced.length - 1}`);
    } catch (err) {
      console.log(err);
    }
  }
};

const TABLE_NAME = 'MY_TABLE_NAME';

const deleteAllItems = async () => {
  const items = await getAllItemFromTable(TABLE_NAME);
  await deleteItemsFromTable(TABLE_NAME, items);
}

deleteAllItems();