feat: methods option (#319)

* Add the option `acceptedMethods`

Add the option `acceptedMethods` to allow for requests with method other than "GET" to be processed

* Update README.md

Update README.md documenting the addition of the option `acceptedMethods`

* Tests for the option `acceptedMethods`

Add a set of testes for the option `acceptedMethods`

* Tests for the option `acceptedMethods` : smallfix, line ending

* Changed option name from acceptedMethods to methods

* Update README.md

* Changed option name from acceptedMethods to methods

Author: ferdinando-ferreira

README.md

@@ -62,6 +62,13 @@ for the Object.
 
 _Note: The `publicPath` property is required, whereas all other options are optional_
 
+### methods
+
+Type: `Array`  
+Default: `[ 'GET' ]`
+
+This property allows a user to pass the list of HTTP request methods accepted by the server. 
+
 ### headers
 
 Type: `Object`  

lib/middleware.js

@@ -24,7 +24,8 @@ module.exports = function wrapper(context) {
       }));
     }
 
-    if (req.method !== 'GET') {
+    const acceptedMethods = context.options.methods || ['GET'];
+    if (acceptedMethods.indexOf(req.method) === -1) {
       return goNext();
     }
 

test/tests/server.js

@@ -122,6 +122,34 @@ describe('Server', () => {
     });
   });
 
+  describe('accepted methods', () => {
+    before((done) => {
+      app = express();
+      const compiler = webpack(webpackConfig);
+      instance = middleware(compiler, {
+        stats: 'errors-only',
+        methods: ['POST'],
+        logLevel,
+        publicPath: '/public/'
+      });
+      app.use(instance);
+      listen = listenShorthand(done);
+    });
+    after(close);
+
+    it('POST request to bundle file with methods set to [\'POST\']', (done) => {
+      request(app).post('/public/bundle.js')
+        .expect('Content-Type', 'application/javascript; charset=UTF-8')
+        .expect('Content-Length', '3645')
+        .expect(200, /console\.log\('Hey\.'\)/, done);
+    });
+
+    it('GET request to bundle file with methods set to [\'POST\']', (done) => {
+      request(app).get('/public/bundle.js')
+        .expect(404, done);
+    });
+  });
+
   describe('no index mode', () => {
     before((done) => {
       app = express();