ListTasks.js

var AWS = require('aws-sdk');
AWS.config.region = 'ap-northeast-1';

var db = new AWS.DynamoDB();

exports.handler = function(event, context) {
    console.log(event);
    var ddbRequest = null;

    var formatOutput = function(data) {
        var output = [];
        
        for ( var i = 0; i < data.Items.length; i++ ) {
            var item = data.Items[i];
            
            output.push({
                'id' : item.id.N,
                'title' : item.title.S,
                'description' : item.description.S,
                'done' : item.done.BOOL,
                'createdAt' : item.createdAt.S,
                'updatedAt' : item.updatedAt.S
            });
        }
        
        return output;
    }

    var params = {
            TableName: 'Tasks',
            Select: "ALL_ATTRIBUTES"
    };
    
    ddbRequest = db.scan(params, function(err, data){
        err && console.log(err);
        console.log('query');
        context.succeed(formatOutput(data));
    });

    ddbRequest.send();
};