remove closure wrap in examples thanks to compose 2.0

examples/co.js

@@ -6,8 +6,7 @@ var app = koa();
 // read docs/*.md in parallel
 // and return a joined response
 
-app.use(function(){
-  return function *(){
+app.use(function *(){
   var paths = yield fs.readdir('docs');
 
   var files = yield paths.map(function(path){
@@ -16,7 +15,6 @@ app.use(function(){
 
   this.type = 'markdown';
   this.body = files.join('');
-  }
 });
 
 app.listen(3000);

examples/compose.js

@@ -1,46 +1,38 @@
 
 var compose = require('koa-compose');
-var http = require('http');
 var koa = require('..');
 var app = koa();
-var calls = [];
 
 // x-response-time
 
 function responseTime(){
-  return function responseTime(next){
-    return function *(){
+  return function *responseTime(next){
     var start = new Date;
     yield next;
     var ms = new Date - start;
     this.set('X-Response-Time', ms + 'ms');
   }
-  }
 }
 
 // logger
 
 function logger(){
-  return function logger(next){
-    return function *(){
+  return function* logger(next){
     var start = new Date;
     yield next;
     var ms = new Date - start;
     console.log('%s %s - %s', this.method, this.url, ms);
   }
-  }
 }
 
 // response
 
 function respond() {
-  return function respond(next){
-    return function *(){
+  return function* respond(next){
     yield next;
     if ('/' != this.url) return;
     this.body = 'Hello World';
   }
-  }
 }
 
 // composed middleware
@@ -55,4 +47,4 @@ function all() {
 
 app.use(all());
 
-http.createServer(app.callback()).listen(3000);
+app.listen(3000);

examples/conditional-middleware-middleware.js

@@ -1,17 +1,14 @@
 
-var http = require('http');
 var koa = require('..');
 var app = koa();
 
 // logger
 
-function logger(next){
-  return function *(){
+function *logger(next){
   var start = new Date;
   yield next;
   var ms = new Date - start;
   console.log('%s %s - %s', this.method, this.url, ms);
-  }
 }
 
 // passing any middleware to this middleware
@@ -20,15 +17,13 @@ function logger(next){
 // approach to conditiona-middleware.js
 
 function ignoreAssets(mw) {
-  return function(next){
-    return function *(){
+  return function *(next){
     if (/(\.js|\.css|\.ico)$/.test(this.path)) {
       yield next;
     } else {
       yield mw(next);
     }
   }
-  }
 }
 
 app.use(ignoreAssets(logger));
@@ -37,10 +32,8 @@ app.use(ignoreAssets(logger));
 // ad-hoc logic to enable middleware, for
 // example ignoring a logger on asset requests:
 
-app.use(function(next){
-  return function *(){
+app.use(function *(){
   this.body = 'Hello World';
-  }
 });
 
 app.listen(3000);

examples/conditional-middleware.js

@@ -1,32 +1,27 @@
 
-var http = require('http');
 var koa = require('..');
 var app = koa();
 
 // logger
 
-function logger(next){
-  return function *(){
+function *logger(next){
   var start = new Date;
   yield next;
   var ms = new Date - start;
   console.log('%s %s - %s', this.method, this.url, ms);
-  }
 }
 
 // sometimes it's useful to apply some
 // ad-hoc logic to enable middleware, for
 // example ignoring a logger on asset requests:
 
-app.use(function(next){
-  return function *(){
+app.use(function *(next){
   if (/(\.js|\.css|\.ico)$/.test(this.path)) {
     yield next;
   } else {
     this.body = 'Hello World';
     yield logger(next);
   }
-  }
 });
 
 app.listen(3000);

examples/cookies.js

@@ -1,15 +1,12 @@
 
-var http = require('http');
 var koa = require('..');
 var app = koa();
 
-app.use(function(){
-  return function *(){
+app.use(function *(){
   if ('/favicon.ico' == this.path) return;
   var n = ~~this.cookies.get('view') || 1;
   this.cookies.set('view', n + 1);
   this.body = n + ' views';
-  }
 });
 
 app.listen(3000);

examples/errors.js

@@ -1,12 +1,10 @@
 
-var http = require('http');
 var koa = require('..');
 var app = koa();
 
 // look ma, error propagation!
 
-app.use(function(next){
-  return function *(){
+app.use(function *(next){
   try {
     yield next;
   } catch (err) {
@@ -22,15 +20,12 @@ app.use(function(next){
     // centralized still functions correctly.
     this.app.emit('error', err, this);
   }
-  }
 });
 
 // response
 
-app.use(function(next){
-  return function *(){
+app.use(function *(){
   throw new Error('boom boom');
-  }
 });
 
 // error handler

examples/negotiation.js

@@ -1,6 +1,5 @@
 
 var koa = require('..');
-var fs = require('fs');
 var app = koa();
 
 var tobi = {
@@ -26,8 +25,7 @@ var users = {
 // may want to check the type, as it may
 // be a stream, buffer, string, etc.
 
-app.use(function(next){
-  return function *(){
+app.use(function *(next){
   yield next;
 
   // responses vary on accepted type
@@ -57,31 +55,26 @@ app.use(function(next){
 
   // default to text
   this.body = this.body.name;
-  }
 });
 
 // filter responses, in this case remove ._id
 // since it's private
 
-app.use(function(next){
-  return function *(){
+app.use(function *(next){
   yield next;
 
   if (!this.body) return;
 
   delete this.body._id;
-  }
 });
 
 // try $ GET /tobi
 // try $ GET /loki
 
-app.use(function(){
-  return function *(){
+app.use(function *(){
   var name = this.path.slice(1);
   var user = users[name];
   this.body = user;
-  }
 });
 
 app.listen(3000);

examples/route.js

@@ -1,5 +1,4 @@
 
-var http = require('http');
 var koa = require('..');
 var app = koa();
 
@@ -7,13 +6,11 @@ var data;
 
 // logger
 
-app.use(function(next){
-  return function *(){
+app.use(function *(next){
   var start = new Date;
   yield next;
   var ms = new Date - start;
   console.log('%s %s - %s', this.method, this.url, ms);
-  }
 });
 
 // response
@@ -56,13 +53,11 @@ function post(path, fn) {
 }
 
 function route(method, path, fn) {
-  return function(next){
-    return function *() {
+  return function *(next){
     var match = method == this.method && this.path == path;
     if (match) return yield fn;
     yield next;
   }
-  }
 }
 
 app.listen(3000);

examples/simple.js

@@ -1,59 +1,48 @@
 
-var http = require('http');
 var koa = require('..');
 var app = koa();
 
 // x-response-time
 
-app.use(function(next){
-  return function *responseTime(){
+app.use(function *responseTime(next){
   var start = new Date;
   yield next;
   var ms = new Date - start;
   this.set('X-Response-Time', ms + 'ms');
-  }
 });
 
 // logger
 
-app.use(function(next){
-  return function *logger(){
+app.use(function *logger(next){
   var start = new Date;
   yield next;
   var ms = new Date - start;
   console.log('%s %s - %s', this.method, this.url, ms);
-  }
 });
 
 // content-length
 
-app.use(function(next){
-  return function *contentLength(){
+app.use(function *contentLength(next){
   yield next;
   if (!this.body) return;
   this.set('Content-Length', Buffer.byteLength(this.body));
-  }
 });
 
 // custom 404 handler
 
-app.use(function(next){
-  return function *notfound(){
+app.use(function *notfound(next){
   yield next;
   if (this.body) return;
   this.status = 404;
   this.body = 'Sorry! No luck';
-  }
 });
 
 // response
 
-app.use(function(next){
-  return function *response(){
+app.use(function *response(next){
   yield next;
   if ('/' != this.url) return;
   this.body = 'Hello World';
-  }
 });
 
 app.listen(3000);

examples/streams-pipe.js

@@ -6,26 +6,21 @@ var app = koa();
 
 // ignore favicons
 
-app.use(function(next){
-  return function *(){
+app.use(function *(next){
   if ('/favicon.ico' == this.path) this.status = 404;
   yield next;
-  }
 });
 
 // logger
 
-app.use(function(next){
-  return function *(){
+app.use(function *(next){
   console.log('%s %s', this.method, this.url);
   yield next;
-  }
 });
 
 // stream a file
 
-app.use(function(next){
-  return function *(){
+app.use(function *(next){
   var path = __dirname + this.path;
   var exists = yield isFile(path);
 
@@ -33,13 +28,11 @@ app.use(function(next){
 
   this.body = fs.createReadStream(path);
   yield next;
-  }
 });
 
 // gzip the response
 
-app.use(function(next){
-  return function *(){
+app.use(function *(next){
   var body = this.body;
 
   if (!body || !body.readable) return yield next;
@@ -50,7 +43,6 @@ app.use(function(next){
   body.pipe(gzip);
 
   yield next;
-  }
 });
 
 app.listen(3000);

examples/streams.js

@@ -5,11 +5,9 @@ var app = koa();
 
 // try GET /streams.js
 
-app.use(function(){
-  return function *(){
+app.use(function *(){
   var path = __dirname + this.path;
   this.body = fs.createReadStream(path);
-  }
 });
 
 app.listen(3000);

examples/templates.js

@@ -1,6 +1,5 @@
 
 var views = require('co-views');
-var http = require('http');
 var koa = require('..');
 var app = koa();
 
@@ -23,21 +22,17 @@ var user = {
 
 // logger
 
-app.use(function(next){
-  return function *logger(){
+app.use(function *logger(next){
   var start = new Date;
   yield next;
   var ms = new Date - start;
   console.log('%s %s - %s', this.method, this.url, ms);
-  }
 });
 
 // render
 
-app.use(function(next){
-  return function *(){
+app.use(function *(){
   this.body = yield render('user', { user: user });
-  }
 })
 
 app.listen(4000);