fix: Support Symbol.metadata (#22282)

This commit adds support for "Symbol.metadata" which was 
omitted when adding support for the Decorators Proposal.

Closes https://github.com/denoland/deno/issues/22111

1 files changed, 19 insertions, 1 deletions

diff --git a/runtime/js/99_main.js b/runtime/js/99_main.js
index c1ded6b24..112cea122 100644
--- a/runtime/js/99_main.js
+++ b/runtime/js/99_main.js
@@ -89,9 +89,21 @@ import {
 import {
   workerRuntimeGlobalProperties,
 } from "ext:runtime/98_global_scope_worker.js";
-import { SymbolAsyncDispose, SymbolDispose } from "ext:deno_web/00_infra.js";
+import {
+  SymbolAsyncDispose,
+  SymbolDispose,
+  SymbolMetadata,
+} from "ext:deno_web/00_infra.js";
 // deno-lint-ignore prefer-primordials
 if (Symbol.dispose) throw "V8 supports Symbol.dispose now, no need to shim it!";
+// deno-lint-ignore prefer-primordials
+if (Symbol.asyncDispose) {
+  throw "V8 supports Symbol.asyncDispose now, no need to shim it!";
+}
+// deno-lint-ignore prefer-primordials
+if (Symbol.metadata) {
+  throw "V8 supports Symbol.metadata now, no need to shim it!";
+}
 ObjectDefineProperties(Symbol, {
   dispose: {
     value: SymbolDispose,
@@ -105,6 +117,12 @@ ObjectDefineProperties(Symbol, {
     writable: false,
     configurable: false,
   },
+  metadata: {
+    value: SymbolMetadata,
+    enumerable: false,
+    writable: false,
+    configurable: false,
+  },
 });
 
 let windowIsClosing = false;