1 files changed, 17 insertions, 0 deletions
diff --git a/cli/tsc/dts/lib.decorators.d.ts b/cli/tsc/dts/lib.decorators.d.ts
index 2d2b4ee2a..11a8ca6de 100644
--- a/cli/tsc/dts/lib.decorators.d.ts
+++ b/cli/tsc/dts/lib.decorators.d.ts
@@ -35,6 +35,11 @@ type DecoratorContext =
     | ClassMemberDecoratorContext
     ;
 
+type DecoratorMetadataObject = Record<PropertyKey, unknown> & object;
+
+type DecoratorMetadata =
+    typeof globalThis extends { Symbol: { readonly metadata: symbol } } ? DecoratorMetadataObject : DecoratorMetadataObject | undefined;
+
 /**
  * Context provided to a class decorator.
  * @template Class The type of the decorated class associated with this context.
@@ -66,6 +71,8 @@ interface ClassDecoratorContext<
      * ```
      */
     addInitializer(initializer: (this: Class) => void): void;
+
+    readonly metadata: DecoratorMetadata;
 }
 
 /**
@@ -130,6 +137,8 @@ interface ClassMethodDecoratorContext<
      * ```
      */
     addInitializer(initializer: (this: This) => void): void;
+
+    readonly metadata: DecoratorMetadata;
 }
 
 /**
@@ -175,6 +184,8 @@ interface ClassGetterDecoratorContext<
      * decorating a non-`static` element).
      */
     addInitializer(initializer: (this: This) => void): void;
+
+    readonly metadata: DecoratorMetadata;
 }
 
 /**
@@ -220,6 +231,8 @@ interface ClassSetterDecoratorContext<
      * decorating a non-`static` element).
      */
     addInitializer(initializer: (this: This) => void): void;
+
+    readonly metadata: DecoratorMetadata;
 }
 
 /**
@@ -274,6 +287,8 @@ interface ClassAccessorDecoratorContext<
      * decorating a non-`static` element).
      */
     addInitializer(initializer: (this: This) => void): void;
+
+    readonly metadata: DecoratorMetadata;
 }
 
 /**
@@ -369,4 +384,6 @@ interface ClassFieldDecoratorContext<
      * decorating a non-`static` element).
      */
     addInitializer(initializer: (this: This) => void): void;
+
+    readonly metadata: DecoratorMetadata;
 }