buffer: add @@toStringTag to Blob

This commit adds the toStringTag to the Blob class to match the behavior of Chrome and Firefox. PR-URL: #37336 Fixes: #37337 Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>

Author: cjihrig

lib/internal/blob.js

@@ -2,12 +2,14 @@
 
 const {
  ArrayFrom,
+ ObjectDefineProperty,
  ObjectSetPrototypeOf,
  PromiseResolve,
  RegExpPrototypeTest,
  StringPrototypeToLowerCase,
  Symbol,
  SymbolIterator,
+ SymbolToStringTag,
  Uint8Array,
 } = primordials;
 
@@ -217,6 +219,11 @@ class Blob extends JSTransferable {
  }
 }
 
+ObjectDefineProperty(Blob.prototype, SymbolToStringTag, {
+ configurable: true,
+ value: 'Blob',
+});
+
 InternalBlob.prototype.constructor = Blob;
 ObjectSetPrototypeOf(
  InternalBlob.prototype,

test/parallel/test-blob.js

@@ -184,3 +184,14 @@ assert.throws(() => new Blob(['test', 1]), {
  const b = new Blob(['hello'], { type: '\x01' });
  assert.strictEqual(b.type, '');
 }
+
+{
+ const descriptor =
+ Object.getOwnPropertyDescriptor(Blob.prototype, Symbol.toStringTag);
+ assert.deepStrictEqual(descriptor, {
+ configurable: true,
+ enumerable: false,
+ value: 'Blob',
+ writable: false
+ });
+}