feat(sdk-js): add stream_resumable flag, that marks the stream as resumable (#4757)

libs/sdk-js/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@langchain/langgraph-sdk",
-  "version": "0.0.76",
+  "version": "0.0.77",
   "description": "Client library for interacting with the LangGraph API",
   "type": "module",
   "packageManager": "yarn@1.22.19",

libs/sdk-js/src/client.ts

@@ -894,6 +894,7 @@ export class RunsClient<
       metadata: payload?.metadata,
       stream_mode: payload?.streamMode,
       stream_subgraphs: payload?.streamSubgraphs,
+      stream_resumable: payload?.streamResumable,
       feedback_keys: payload?.feedbackKeys,
       assistant_id: assistantId,
       interrupt_before: payload?.interruptBefore,
@@ -953,6 +954,7 @@ export class RunsClient<
       metadata: payload?.metadata,
       stream_mode: payload?.streamMode,
       stream_subgraphs: payload?.streamSubgraphs,
+      stream_resumable: payload?.streamResumable,
       assistant_id: assistantId,
       interrupt_before: payload?.interruptBefore,
       interrupt_after: payload?.interruptAfter,

libs/sdk-js/src/types.ts

@@ -156,6 +156,12 @@ export interface RunsStreamPayload<
    */
   streamSubgraphs?: TSubgraphs;
 
+  /**
+   * Whether the stream is considered resumable.
+   * If true, the stream can be resumed and replayed in its entirety even after disconnection.
+   */
+  streamResumable?: boolean;
+
   /**
    * Pass one or more feedbackKeys if you want to request short-lived signed URLs
    * for submitting feedback to LangSmith with this key for this run.
@@ -173,6 +179,12 @@ export interface RunsCreatePayload extends RunsInvokePayload {
    * Stream output from subgraphs. By default, streams only the top graph.
    */
   streamSubgraphs?: boolean;
+
+  /**
+   * Whether the stream is considered resumable.
+   * If true, the stream can be resumed and replayed in its entirety even after disconnection.
+   */
+  streamResumable?: boolean;
 }
 
 export interface CronsCreatePayload extends RunsCreatePayload {