LambdaでS3からJSONファイルの内容を取得する

index.js

const aws = require('aws-sdk');
aws.config.region = 'ap-northeast-1';
const s3 = new aws.S3();

console.log('Loading function');

exports.handler = async (event, context) => {
    var params = { 
        Bucket: 'sample',
        Key: 'sample.json',
    };
    
    var response = {};
    try {
        const data = await s3.getObject(params).promise();
        response = {
            statusCode: 200,
            body: data.Body.toString(),
        };
    } catch (err) {
        console.log('Error:', err);
    }

    return response;
};