Add Content-Type: text/html; charset-utf8

src/index.js

@@ -37,16 +37,16 @@ function fastbootExpressMiddleware(distPath, options) {
       responseBody.then(body => {
         let headers = result.headers;
         let statusMessage = result.error ? 'NOT OK ' : 'OK ';
-    
+
         for (var pair of headers.entries()) {
           res.set(pair[0], pair[1]);
         }
-    
+
         if (result.error) {
           log("RESILIENT MODE CAUGHT:", result.error.stack);
           next(result.error);
         }
-    
+
         log(result.statusCode, statusMessage + path);
         res.status(result.statusCode);
 
@@ -55,6 +55,7 @@ function fastbootExpressMiddleware(distPath, options) {
         } else if (result.error) {
           res.send(body[0]);
         } else {
+          res.type('html');
           body.forEach(chunk => res.write(chunk));
           res.end();
         }

test/middleware-test.js

@@ -120,6 +120,7 @@ describe("FastBoot", function() {
             .then(() => server.request('/', { resolveWithFullResponse: true }))
             .then(({ body, _, headers }) => {
               expect(headers['transfer-encoding']).to.eq('chunked');
+              expect(headers['content-type']).to.eq('text/html; charset=utf-8');
               expect(body).to.match(/Welcome to Ember/);
             });
         });