asksuite-core/services/AWSS3Caller.js

const AWS = require('aws-sdk');

class AWSS3Caller {
  constructor(awsConfig) {
    AWS.config.update(awsConfig);
  }

  async getObject(bucket, key) {
    const s3 = new AWS.S3();
    const getParams = {
      Bucket: bucket,
      Key: key,
    };

    return new Promise((resolve, reject) => {
      s3.getObject(getParams)
        .promise()
        .then(function(data) {
          const body = data.Body.toString('utf-8');
          resolve(JSON.parse(body)); // Use the encoding necessary
        })
        .catch(reject);
    });
  }
}

module.exports = AWSS3Caller;