How to fetch/scan all items from `AWS dynamodb` using node.js

Question

How to fetch/scan all items from AWS dynamodb using node.js. I am posting my code here.

var docClient = new aws.DynamoDB.DocumentCl         


        

Answer 1

I use promises like this:

let AWS = require('aws-sdk');
let docClient = new AWS.DynamoDB.DocumentClient();

async function dbRead(params) {
    let promise = docClient.scan(params).promise();
    let result = await promise;
    let data = result.Items;
    if (result.LastEvaluatedKey) {
        params.ExclusiveStartKey = result.LastEvaluatedKey;
        data = data.concat(await dbRead(params));
    }
    return data;
}

and to use it:

let params = {
  TableName: 'Table'
};
let data = await dbRead(params);