pass filename through to SSR compiler

src/server-side-rendering/register.js

@@ -2,7 +2,7 @@ import * as fs from 'fs';
 import compile from './compile.js';
 
 require.extensions[ '.html' ] = function ( module, filename ) {
-	const { code } = compile( fs.readFileSync( filename, 'utf-8' ) );
+	const { code } = compile( fs.readFileSync( filename, 'utf-8' ), filename );
 
 	try {
 		return module._compile( code, filename );