1 files changed, 38 insertions, 0 deletions
diff --git a/node_modules/mimic-response/index.js b/node_modules/mimic-response/index.js
new file mode 100644
index 0000000..edd0faf
--- /dev/null
+++ b/node_modules/mimic-response/index.js
@@ -0,0 +1,38 @@
+'use strict';
+
+// We define these manually to ensure they're always copied
+// even if they would move up the prototype chain
+// https://nodejs.org/api/http.html#http_class_http_incomingmessage
+const knownProperties = [
+	'aborted',
+	'complete',
+	'destroy',
+	'headers',
+	'httpVersion',
+	'httpVersionMinor',
+	'httpVersionMajor',
+	'method',
+	'rawHeaders',
+	'rawTrailers',
+	'setTimeout',
+	'socket',
+	'statusCode',
+	'statusMessage',
+	'trailers',
+	'url'
+];
+
+module.exports = (fromStream, toStream) => {
+	const fromProperties = new Set(Object.keys(fromStream).concat(knownProperties));
+
+	for (const property of fromProperties) {
+		// Don't overwrite existing properties.
+		if (property in toStream) {
+			continue;
+		}
+
+		toStream[property] = typeof fromStream[property] === 'function' ? fromStream[property].bind(fromStream) : fromStream[property];
+	}
+
+	return toStream;
+};