chore(types): add AwsSdkTokenFeatures and AttributedTokenIdentity

Author: trivikr

packages/types/src/feature-ids.ts

@@ -32,7 +32,8 @@ export type AwsSdkFeatures = Partial<{
   FLEXIBLE_CHECKSUMS_RES_WHEN_REQUIRED: "c";
   DDB_MAPPER: "d";
 }> &
-  AwsSdkCredentialsFeatures;
+  AwsSdkCredentialsFeatures &
+  AwsSdkTokenFeatures;
 
 /**
  * @internal
@@ -62,3 +63,10 @@ export type AwsSdkCredentialsFeatures = Partial<{
   CREDENTIALS_HTTP: "z";
   CREDENTIALS_IMDS: "0";
 }>;
+
+/**
+ * @internal
+ */
+export type AwsSdkTokenFeatures = Partial<{
+  BEARER_SERVICE_ENV_VARS: "3";
+}>;

packages/types/src/identity/TokenIdentity.ts

@@ -1 +1,13 @@
+import type { TokenIdentity } from "@smithy/types";
+
+import type { AwsSdkTokenFeatures } from "../feature-ids";
 export { TokenIdentity, TokenIdentityProvider } from "@smithy/types";
+
+/**
+ * @public
+ *
+ * TokenIdentity with source attribution metadata.
+ */
+export type AttributedTokenIdentity = TokenIdentity & {
+  $source?: AwsSdkTokenFeatures;
+};