lib: throw invalid arg type from End Of Stream

Author: MrJithil

lib/internal/streams/end-of-stream.js

@@ -8,7 +8,8 @@ const {
   codes,
 } = require('internal/errors');
 const {
-  ERR_STREAM_PREMATURE_CLOSE
+  ERR_STREAM_PREMATURE_CLOSE,
+  ERR_INVALID_ARG_TYPE
 } = codes;
 const { once } = require('internal/util');
 const {
@@ -55,8 +56,7 @@ function eos(stream, options, callback) {
   const writable = options.writable ?? isWritableNodeStream(stream);
 
   if (!isNodeStream(stream)) {
-    // TODO: Webstreams.
-    // TODO: Throw INVALID_ARG_TYPE.
+    throw new ERR_INVALID_ARG_TYPE('stream', 'stream.Stream', stream);
   }
 
   const wState = stream._writableState;

test/parallel/test-stream-end-of-streams.js

@@ -0,0 +1,23 @@
+'use strict';
+const assert = require('assert');
+
+const { Duplex, finished } = require('stream');
+
+assert.throws(
+  () => {
+    // Passing empty object to mock invalid stream
+    // should throw error
+    finished({}, () => {});
+  },
+  {
+    code: 'ERR_INVALID_ARG_TYPE',
+    name: 'TypeError',
+    message: /stream/,
+  }
+);
+
+const streamObj = new Duplex();
+streamObj.end();
+// Below code should not throw any errors as the
+// streamObj is `Stream`
+finished(streamObj, () => {});