1 files changed, 98 insertions, 0 deletions
diff --git a/node_modules/webpack-dev-middleware/lib/middleware.js b/node_modules/webpack-dev-middleware/lib/middleware.js
new file mode 100644
index 00000000..602632b6
--- /dev/null
+++ b/node_modules/webpack-dev-middleware/lib/middleware.js
@@ -0,0 +1,98 @@
+'use strict';
+
+const path = require('path');
+const mime = require('mime');
+const DevMiddlewareError = require('./DevMiddlewareError');
+const { getFilenameFromUrl, handleRangeHeaders, handleRequest, ready } = require('./util');
+
+module.exports = function wrapper(context) {
+  return function middleware(req, res, next) {
+    // fixes #282. credit @cexoso. in certain edge situations res.locals is
+    // undefined.
+    res.locals = res.locals || {};
+
+    function goNext() {
+      if (!context.options.serverSideRender) {
+        return next();
+      }
+
+      return new Promise(((resolve) => {
+        ready(context, () => {
+          res.locals.webpackStats = context.webpackStats;
+          res.locals.fs = context.fs;
+          resolve(next());
+        }, req);
+      }));
+    }
+
+    const acceptedMethods = context.options.methods || ['GET'];
+    if (acceptedMethods.indexOf(req.method) === -1) {
+      return goNext();
+    }
+
+    let filename = getFilenameFromUrl(context.options.publicPath, context.compiler, req.url);
+
+    if (filename === false) {
+      return goNext();
+    }
+
+    return new Promise(((resolve) => {
+      handleRequest(context, filename, processRequest, req);
+      function processRequest() {
+        try {
+          let stat = context.fs.statSync(filename);
+
+          if (!stat.isFile()) {
+            if (stat.isDirectory()) {
+              let { index } = context.options;
+
+              if (index === undefined || index === true) {
+                index = 'index.html';
+              } else if (!index) {
+                throw new DevMiddlewareError('next');
+              }
+
+              filename = path.posix.join(filename, index);
+              stat = context.fs.statSync(filename);
+              if (!stat.isFile()) {
+                throw new DevMiddlewareError('next');
+              }
+            } else {
+              throw new DevMiddlewareError('next');
+            }
+          }
+        } catch (e) {
+          return resolve(goNext());
+        }
+
+        // server content
+        let content = context.fs.readFileSync(filename);
+        content = handleRangeHeaders(content, req, res);
+
+        let contentType = mime.getType(filename);
+
+        // do not add charset to WebAssembly files, otherwise compileStreaming will fail in the client
+        if (!/\.wasm$/.test(filename)) {
+          contentType += '; charset=UTF-8';
+        }
+
+        res.setHeader('Content-Type', contentType);
+        res.setHeader('Content-Length', content.length);
+
+        const { headers } = context.options;
+        if (headers) {
+          for (const name in headers) {
+            if ({}.hasOwnProperty.call(headers, name)) {
+              res.setHeader(name, context.options.headers[name]);
+            }
+          }
+        }
+        // Express automatically sets the statusCode to 200, but not all servers do (Koa).
+        res.statusCode = res.statusCode || 200;
+        if (res.send) res.send(content);
+        else res.end(content);
+        resolve();
+      }
+    }));
+  };
+};