fix

Author: MaxLeiter

lib/stream.js

@@ -1,13 +1,14 @@
-// Attempt to use readable-stream if available, attempt to use the built-in stream module.
+// Attempt to use the native ReadbleStream if available, otherwise check for the `readable-stream` package or the built-in Node.js `stream` module.
 let Readable;
-try {
-  Readable = require("readable-stream").Readable;
-} catch (e) {
+
+if (typeof ReadableStream === 'undefined') {
   try {
-    Readable = require("stream").Readable;
+    Readable = require("readable-stream").Readable || require("stream").Readable;
   } catch (e) {
     Readable = null;
   }
+} else {
+  Readable = ReadableStream;
 }
 
 /**