fix(core): Improve interoperability between different langsmith versions

dependency_range_tests/docker-compose.yml

@@ -2,7 +2,7 @@ version: "3"
 services:
   # LangChain
   langchain-latest-deps:
-    image: node:18
+    image: node:20
     environment:
       PUPPETEER_SKIP_DOWNLOAD: "true"
       PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: "true"
@@ -13,7 +13,7 @@ services:
       - ./scripts:/scripts
     command: bash /scripts/langchain/test-with-latest-deps.sh
   langchain-lowest-deps:
-    image: node:18
+    image: node:20
     environment:
       PUPPETEER_SKIP_DOWNLOAD: "true"
       PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: "true"
@@ -23,10 +23,10 @@ services:
       - ../langchain:/langchain
       - ./scripts:/scripts
     command: bash /scripts/langchain/test-with-lowest-deps.sh
-  
+
   # Community
   community-latest-deps:
-    image: node:18
+    image: node:20
     environment:
       PUPPETEER_SKIP_DOWNLOAD: "true"
       PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: "true"
@@ -40,7 +40,7 @@ services:
       - ./scripts:/scripts
     command: bash /scripts/with_standard_tests/community/test-with-latest-deps.sh
   community-lowest-deps:
-    image: node:18
+    image: node:20
     environment:
       PUPPETEER_SKIP_DOWNLOAD: "true"
       PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: "true"
@@ -54,7 +54,7 @@ services:
       - ./scripts:/scripts
     command: bash /scripts/with_standard_tests/community/test-with-lowest-deps.sh
   community-npm-install:
-    image: node:18
+    image: node:20
     environment:
       PUPPETEER_SKIP_DOWNLOAD: "true"
       PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: "true"
@@ -69,7 +69,7 @@ services:
 
   # OpenAI
   openai-latest-deps:
-    image: node:18
+    image: node:20
     environment:
       PUPPETEER_SKIP_DOWNLOAD: "true"
       PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: "true"
@@ -83,7 +83,7 @@ services:
       - ./scripts:/scripts
     command: bash /scripts/with_standard_tests/openai/test-with-latest-deps.sh
   openai-lowest-deps:
-    image: node:18
+    image: node:20
     environment:
       PUPPETEER_SKIP_DOWNLOAD: "true"
       PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: "true"
@@ -99,7 +99,7 @@ services:
 
   # Anthropic
   anthropic-latest-deps:
-    image: node:18
+    image: node:20
     environment:
       PUPPETEER_SKIP_DOWNLOAD: "true"
       PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: "true"
@@ -113,7 +113,7 @@ services:
       - ./scripts:/scripts
     command: bash /scripts/with_standard_tests/anthropic/test-with-latest-deps.sh
   anthropic-lowest-deps:
-    image: node:18
+    image: node:20
     environment:
       PUPPETEER_SKIP_DOWNLOAD: "true"
       PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: "true"
@@ -129,7 +129,7 @@ services:
 
   # Google VertexAI
   google-vertexai-latest-deps:
-    image: node:18
+    image: node:20
     environment:
       PUPPETEER_SKIP_DOWNLOAD: "true"
       PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: "true"
@@ -143,7 +143,7 @@ services:
       - ./scripts:/scripts
     command: bash /scripts/with_standard_tests/google-vertexai/test-with-latest-deps.sh
   google-vertexai-lowest-deps:
-    image: node:18
+    image: node:20
     environment:
       PUPPETEER_SKIP_DOWNLOAD: "true"
       PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: "true"
@@ -159,7 +159,7 @@ services:
 
   # Cohere
   cohere-latest-deps:
-    image: node:18
+    image: node:20
     environment:
       PUPPETEER_SKIP_DOWNLOAD: "true"
       PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: "true"
@@ -173,7 +173,7 @@ services:
       - ./scripts:/scripts
     command: bash /scripts/with_standard_tests/cohere/test-with-latest-deps.sh
   cohere-lowest-deps:
-    image: node:18
+    image: node:20
     environment:
       PUPPETEER_SKIP_DOWNLOAD: "true"
       PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: "true"
@@ -185,4 +185,4 @@ services:
       - ../libs/langchain-standard-tests:/libs/langchain-standard-tests
       - ../libs/langchain-cohere:/libs/langchain-cohere
       - ./scripts:/scripts
-    command: bash /scripts/with_standard_tests/cohere/test-with-lowest-deps.sh
+    command: bash /scripts/with_standard_tests/cohere/test-with-lowest-deps.sh

examples/package.json

@@ -93,7 +93,7 @@
     "ioredis": "^5.3.2",
     "js-yaml": "^4.1.0",
     "langchain": "workspace:*",
-    "langsmith": "^0.2.0",
+    "langsmith": "^0.2.8",
     "mongodb": "^6.3.0",
     "pg": "^8.11.0",
     "pickleparser": "^0.2.1",

langchain-core/package.json

@@ -37,7 +37,7 @@
     "camelcase": "6",
     "decamelize": "1.2.0",
     "js-tiktoken": "^1.0.12",
-    "langsmith": "^0.2.0",
+    "langsmith": "^0.2.8",
     "mustache": "^4.2.0",
     "p-queue": "^6.6.2",
     "p-retry": "4",

langchain-core/src/singletons/tracer.ts

@@ -16,3 +16,7 @@ export const getDefaultLangChainClientSingleton = () => {
   }
   return client;
 };
+
+export const setDefaultLangChainClientSingleton = (newClient: Client) => {
+  client = newClient;
+};

langchain-core/src/tracers/tests/langsmith_interop.test.ts

@@ -11,14 +11,20 @@ import {
   expect,
 } from "@jest/globals";
 import { traceable } from "langsmith/traceable";
+import { Client } from "langsmith";
 
 import { RunnableLambda } from "../../runnables/base.js";
 import { BaseMessage, HumanMessage } from "../../messages/index.js";
+import { setDefaultLangChainClientSingleton } from "../../singletons/tracer.js";
 
 let fetchMock: any;
 
 const originalTracingEnvValue = process.env.LANGCHAIN_TRACING_V2;
 
+const client = new Client({
+  autoBatchTracing: false,
+});
+
 beforeEach(() => {
   fetchMock = jest.spyOn(global, "fetch").mockImplementation(() =>
     Promise.resolve({
@@ -29,6 +35,7 @@ beforeEach(() => {
       },
     } as any)
   );
+  setDefaultLangChainClientSingleton(client);
   process.env.LANGCHAIN_TRACING_V2 = "true";
 });
 
@@ -50,7 +57,7 @@ test.each(["true", "false"])(
         await new Promise((resolve) => setTimeout(resolve, 300));
         return msg.content + name;
       },
-      { name: "aiGreet", tracingEnabled: true }
+      { name: "aiGreet", tracingEnabled: true, client }
     );
 
     const root = RunnableLambda.from(async (messages: BaseMessage[]) => {
@@ -197,7 +204,7 @@ test.each(["true", "false"])(
         expect(getContextVariable("foo")).toEqual("baz");
         return msg.content + name;
       },
-      { name: "aiGreet", tracingEnabled: true }
+      { name: "aiGreet", tracingEnabled: true, client }
     );
 
     const root = RunnableLambda.from(async (messages: BaseMessage[]) => {
@@ -485,7 +492,7 @@ test.each(["true", "false"])(
         const contents = await nested.invoke([msg]);
         return contents[0] + name;
       },
-      { name: "aiGreet", tracingEnabled: true }
+      { name: "aiGreet", tracingEnabled: true, client }
     );
 
     await aiGreet(new HumanMessage({ content: "Hello!" }), "mitochondria");
@@ -632,7 +639,7 @@ test.each(["true", "false"])(
         expect(getContextVariable("foo")).toEqual("bar");
         return contents[0] + name;
       },
-      { name: "aiGreet", tracingEnabled: true }
+      { name: "aiGreet", tracingEnabled: true, client }
     );
 
     await aiGreet(new HumanMessage({ content: "Hello!" }), "mitochondria");
@@ -781,7 +788,7 @@ test.each(["true", "false"])(
           yield letter;
         }
       },
-      { name: "aiGreet", tracingEnabled: true }
+      { name: "aiGreet", tracingEnabled: true, client }
     );
 
     for await (const _ of aiGreet(

langchain-core/src/tracers/tracer_langchain.ts

@@ -1,4 +1,4 @@
-import { Client } from "langsmith";
+import type { Client, LangSmithTracingClientInterface } from "langsmith";
 import { RunTree } from "langsmith/run_trees";
 import { getCurrentRunTree } from "langsmith/singletons/traceable";
 
@@ -36,7 +36,7 @@ export interface RunUpdate extends BaseRunUpdate {
 export interface LangChainTracerFields extends BaseCallbackHandlerInput {
   exampleId?: string;
   projectName?: string;
-  client?: Client;
+  client?: LangSmithTracingClientInterface;
 }
 
 export class LangChainTracer
@@ -49,7 +49,7 @@ export class LangChainTracer
 
   exampleId?: string;
 
-  client: Client;
+  client: LangSmithTracingClientInterface;
 
   constructor(fields: LangChainTracerFields = {}) {
     super(fields);
@@ -156,7 +156,7 @@ export class LangChainTracer
         parent_run: undefined,
 
         // inherited properties
-        client: this.client,
+        client: this.client as Client,
         project_name: this.projectName,
         reference_example_id: this.exampleId,
         tracingEnabled: true,

langchain/package.json

@@ -520,7 +520,7 @@
     "js-tiktoken": "^1.0.12",
     "js-yaml": "^4.1.0",
     "jsonpointer": "^5.0.1",
-    "langsmith": "^0.2.0",
+    "langsmith": "^0.2.8",
     "openapi-types": "^12.1.3",
     "p-retry": "4",
     "uuid": "^10.0.0",

libs/langchain-community/package.json

@@ -41,7 +41,7 @@
     "flat": "^5.0.2",
     "js-yaml": "^4.1.0",
     "langchain": ">=0.2.3 <0.3.0 || >=0.3.4 <0.4.0",
-    "langsmith": "^0.2.0",
+    "langsmith": "^0.2.8",
     "uuid": "^10.0.0",
     "zod": "^3.22.3",
     "zod-to-json-schema": "^3.22.5"

yarn.lock

@@ -11829,7 +11829,7 @@ __metadata:
     jsdom: ^22.1.0
     jsonwebtoken: ^9.0.2
     langchain: ">=0.2.3 <0.3.0 || >=0.3.4 <0.4.0"
-    langsmith: ^0.2.0
+    langsmith: ^0.2.8
     llmonitor: ^0.5.9
     lodash: ^4.17.21
     lunary: ^0.7.10
@@ -12263,7 +12263,7 @@ __metadata:
     jest: ^29.5.0
     jest-environment-node: ^29.6.4
     js-tiktoken: ^1.0.12
-    langsmith: ^0.2.0
+    langsmith: ^0.2.8
     ml-matrix: ^6.10.4
     mustache: ^4.2.0
     p-queue: ^6.6.2
@@ -27675,7 +27675,7 @@ __metadata:
     ioredis: ^5.3.2
     js-yaml: ^4.1.0
     langchain: "workspace:*"
-    langsmith: ^0.2.0
+    langsmith: ^0.2.8
     mongodb: ^6.3.0
     pg: ^8.11.0
     pickleparser: ^0.2.1
@@ -33329,7 +33329,7 @@ __metadata:
     js-tiktoken: ^1.0.12
     js-yaml: ^4.1.0
     jsonpointer: ^5.0.1
-    langsmith: ^0.2.0
+    langsmith: ^0.2.8
     openai: ^4.41.1
     openapi-types: ^12.1.3
     p-retry: 4
@@ -33408,9 +33408,9 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"langsmith@npm:^0.2.0":
-  version: 0.2.0
-  resolution: "langsmith@npm:0.2.0"
+"langsmith@npm:^0.2.8":
+  version: 0.2.8
+  resolution: "langsmith@npm:0.2.8"
   dependencies:
     "@types/uuid": ^10.0.0
     commander: ^10.0.1
@@ -33423,7 +33423,7 @@ __metadata:
   peerDependenciesMeta:
     openai:
       optional: true
-  checksum: 0cd92d0e31526d309af197a3502c93a00ac8c09f6b2864161a18a5c1e8b95b0e8203bad2dfe3b4beb26055fc815a8d70730592a58c9af7e202917b13d01f695c
+  checksum: 8695df08a09b9885b0308c66fbf9802edbe20e286fec3db8faa75ed1893a7aafae014441e311677bb60abb33af49da7f7d8404f55fffbdad5aec61cf65215fc8
   languageName: node
   linkType: hard