old_contents: 
  var LambdaForwarder = require("aws-lambda-ses-forwarder");
  
  exports.handler = function(event, context) {
    // Configure the S3 bucket and key prefix for stored raw emails, and the
    // mapping of email addresses to forward from and to.
    //
    // Expected keys/values:
    // - emailBucket: S3 bucket name where SES stores emails.
    // - emailKeyPrefix: S3 key name prefix where SES stores email. Include the
    //   trailing slash.
    // - forwardMapping: Object where the key is the email address from which to
    //   forward and the value is an array of email addresses to which to send the
    //   message.
    var overrides = {
      config: {
        emailBucket: "s3-bucket-name",
        emailKeyPrefix: "emailsPrefix/",
        forwardMapping: {
          "info@example.com": [
            "example.john@example.com",
            "example.jen@example.com"
          ],
          "abuse@example.com": [
            "example.jim@example.com"
          ]
        }
      }
    };
    LambdaForwarder.handler(event, context, overrides);
  };
  
new_contents: 
  var LambdaForwarder = require("aws-lambda-ses-forwarder");
  
  exports.handler = function(event, context) {
    // Configure the S3 bucket and key prefix for stored raw emails, and the
    // mapping of email addresses to forward from and to.
    //
    // Expected keys/values:
    // - fromEmail: Forwarded emails will come from this verified address
    // - emailBucket: S3 bucket name where SES stores emails.
    // - emailKeyPrefix: S3 key name prefix where SES stores email. Include the
    //   trailing slash.
    // - forwardMapping: Object where the key is the email address from which to
    //   forward and the value is an array of email addresses to which to send the
    //   message.
    var overrides = {
      config: {
        fromEmail: "noreply@example.com",
        emailBucket: "s3-bucket-name",
        emailKeyPrefix: "emailsPrefix/",
        forwardMapping: {
          "info@example.com": [
            "example.john@example.com",
            "example.jen@example.com"
          ],
          "abuse@example.com": [
            "example.jim@example.com"
          ]
        }
      }
    };
    LambdaForwarder.handler(event, context, overrides);
  };
  
subject: Update index.js