diff --git a/types/react-dev-utils/evalSourceMapMiddleware.d.ts b/types/react-dev-utils/evalSourceMapMiddleware.d.ts
new file mode 100644
index 0000000000..e006870f81
--- /dev/null
+++ b/types/react-dev-utils/evalSourceMapMiddleware.d.ts
@@ -0,0 +1,11 @@
+import express = require('express');
+import WebpackDevServer = require('webpack-dev-server');
+
+/*
+ * Middleware responsible for retrieving a generated source
+ * Receives a webpack internal url: "webpack-internal:///<module-id>"
+ * Returns a generated source: "<source-text><sourceMappingURL><sourceURL>"
+ */
+declare function createEvalSourceMapMiddleware(server: WebpackDevServer): express.Handler;
+
+export = createEvalSourceMapMiddleware;
diff --git a/types/react-dev-utils/test/evalSourceMapMiddleware.ts b/types/react-dev-utils/test/evalSourceMapMiddleware.ts
new file mode 100644
index 0000000000..67943fed69
--- /dev/null
+++ b/types/react-dev-utils/test/evalSourceMapMiddleware.ts
@@ -0,0 +1,10 @@
+import express = require('express');
+import webpack = require('webpack');
+import WebpackDevServer = require('webpack-dev-server');
+import evalSourceMapMiddleware = require('react-dev-utils/evalSourceMapMiddleware');
+
+const compiler = webpack({});
+const server = new WebpackDevServer(compiler);
+const app = express();
+app.use(evalSourceMapMiddleware(server));
+app.listen(8080);
diff --git a/types/react-dev-utils/tsconfig.json b/types/react-dev-utils/tsconfig.json
index 10291dc829..c9e880f2fd 100644
--- a/types/react-dev-utils/tsconfig.json
+++ b/types/react-dev-utils/tsconfig.json
@@ -20,8 +20,9 @@
         "index.d.ts",
         "test/eslintFormatter.ts",
         "test/noopServiceWorkerMiddleware.ts",
+        "test/evalSourceMapMiddleware.ts",
         "test/utils.ts",
         "test/webpack-plugins.ts",
         "test/webpack-utils.ts"
     ]
-}
\ No newline at end of file
+}