typos and readmes

README.md

@@ -5,3 +5,22 @@ A simple multipart/form-data parser for AWS lambda functions.
 ```
 npm install -S lambda-multipart
 ```
+
+```js
+exports.handler = function(event, context, callback){
+  var Multipart = require('lambda-multipart');
+  var parser = new Multipart(event);
+  parser.on('file',function(file){
+    //file.headers['content-type']
+    file.pipe(fs.createWriteStream(__dirname+"/downloads/"+file.filename));
+  });
+  parser.on('finish',function(result){
+    //result.files (array of file streams)
+    //result.fields (object of field key/values)
+    console.log("Finished")
+  });
+}
+```
+
+### Thanks
+@hapijs for https://github.com/hapijs/pez

index.js

@@ -1,32 +1,38 @@
 var Pez = require('pez');
+var events = require("events");
+var util = require("util");
 
 var CONTENT_TYPE_RE = /^multipart\/(?:form-data|related)(?:;|$)/i;
 var CONTENT_TYPE_PARAM_RE = /;\s*([^=]+)=(?:"([^"]+)"|([^;]+))/gi;
 
-function multipart(event, callback){
+function multipart(event){
   var that = this;
+  events.EventEmitter.call(this);
   that.contentType = event.headers['content-type'];
   if(!that.contentType){ that.contentType = event.headers['Content-Type']; }
-  const dispenser = new Pez.Dispenser({ boundary: that.getBoundry(that.contentType) });
+  const dispenser = new Pez.Dispenser({ boundary: that.getBoundary(that.contentType) });
   that.fields = {};
   that.files = [];
   dispenser.on('part', (part) => {
     that.files.push(part);
+    that.emit('file', part)
   });
   dispenser.on('field', (name, value) => {
     that.fields[name]=value;
+    that.emit('field', that.fields[name])
   });
   dispenser.on('error',function(e){
-    callback(e);
+    that.emit('error', {error:e})
   });
   dispenser.on('close',function(){
-    callback(null, {files:that.files, fields:that.fields});
+    //callback(null, {files:that.files, fields:that.fields});
+    that.emit('finish', {files:that.files, fields:that.fields})
   });
   dispenser.write(event.body, event.isBase64Encoded ? "base64" : "binary");
   dispenser.end();
 }
 
-multipart.prototype.getBoundry = function(contentType){
+multipart.prototype.getBoundary = function(contentType){
   var m = CONTENT_TYPE_RE.exec(contentType);
   if (!m) {
     callback(null, {statusCode: 415, body: "unsupported content-type", headers: {"Content-Type":"text/plain"}});
@@ -44,4 +50,6 @@ multipart.prototype.getBoundry = function(contentType){
   return boundary;
 }
 
+util.inherits(multipart, events.EventEmitter);
+
 module.exports = multipart;