% eslint --fix index.js

Fix this errors

```
/Users/argerich/dev/serverless-image-resizer/index.js
   2:17  error  Absolute imports should come before relative imports  import/first
   8:17  error  'sourceImage' was used before it was defined          no-use-before-define
  11:34  error  'successResponse' was used before it was defined      no-use-before-define
  31:7   error  'isS3Event' was used before it was defined            no-use-before-define
  37:7   error  'isApiGatewayEvent' was used before it was defined    no-use-before-define

✖ 5 problems (5 errors, 0 warnings)
```

index.js

@@ -7,22 +7,21 @@ export const handle = (event, context, callback) => {
 
   const image = sourceImage(event);
 
-  imageResizer({sourceBucket: image.bucket, sourceKey: image.key, options: image.options})
+  imageResizer({ sourceBucket: image.bucket, sourceKey: image.key, options: image.options })
     .then(data => callback(null, successResponse(data)))
     .catch(err => callback(err));
 };
 
-const successResponse = (data) => {
+const successResponse = data =>
   // NOTE: lambda proxy integration format
-  return {
-    isBase64Encoded: false,
-    statusCode: 201,
-    headers: {
-      "Content-Type": 'application/json'
-    },
-    body: JSON.stringify(data),
-  };
-};
+   ({
+     isBase64Encoded: false,
+     statusCode: 201,
+     headers: {
+       'Content-Type': 'application/json',
+     },
+     body: JSON.stringify(data),
+   });
 
 const sourceImage = (event) => {
   let bucket = '';
@@ -38,21 +37,17 @@ const sourceImage = (event) => {
   if (isApiGatewayEvent(event)) {
     const u = url.parse(event.queryStringParameters.source_url);
     bucket = u.hostname;
-    key = u.path.replace(/^\//, "");
+    key = u.path.replace(/^\//, '');
     options = {
       resizeOption: event.queryStringParameters.resize_option,
       destS3Bucket: event.queryStringParameters.dest_s3_bucket,
       destS3Prefix: event.queryStringParameters.dest_s3_prefix,
     };
   }
 
-  return { bucket: bucket, key: key, options: options };
+  return { bucket, key, options };
 };
 
-const isS3Event = (event) => {
-  return typeof event.Records === 'object';
-};
+const isS3Event = event => typeof event.Records === 'object';
 
-const isApiGatewayEvent = (event) => {
-  return typeof event.Records === 'undefined';
-};
+const isApiGatewayEvent = event => typeof event.Records === 'undefined';