chore(core): convert build to tsup

Author: benjamincburns

langchain-core/package.json

@@ -28,7 +28,8 @@
     "test:watch": "NODE_OPTIONS=--experimental-vm-modules jest --watch --testPathIgnorePatterns=\\.int\\.test.ts",
     "test:single": "NODE_OPTIONS=--experimental-vm-modules yarn run jest --config jest.config.cjs --testTimeout 100000",
     "format": "prettier --config .prettierrc --write \"src\"",
-    "format:check": "prettier --config .prettierrc --check \"src\""
+    "format:check": "prettier --config .prettierrc --check \"src\"",
+    "type-check": "tsc --noEmit"
   },
   "author": "LangChain",
   "license": "MIT",
@@ -68,7 +69,8 @@
     "release-it": "^18.1.2",
     "rimraf": "^5.0.1",
     "ts-jest": "^29.1.0",
-    "typescript": "~5.1.6",
+    "tsup": "^8.4.0",
+    "typescript": "^5.4.5",
     "web-streams-polyfill": "^4.0.0"
   },
   "publishConfig": {

langchain-core/src/messages/content_blocks.ts

@@ -228,7 +228,7 @@ export function parseBase64DataUrl({
  */
 export function parseBase64DataUrl({
   dataUrl,
-  asTypedArray = false,
+  asTypedArray,
 }: {
   dataUrl: string;
   asTypedArray?: false;
@@ -243,7 +243,7 @@ export function parseBase64DataUrl({
  */
 export function parseBase64DataUrl({
   dataUrl: data_url,
-  asTypedArray = false,
+  asTypedArray,
 }: {
   dataUrl: string;
   asTypedArray?: boolean;

langchain-core/tsconfig.cjs.json

@@ -1,5 +1,5 @@
 {
-  "extends": "@tsconfig/recommended",
+  "extends": "@tsconfig/recommended/tsconfig.json",
   "compilerOptions": {
     "outDir": "../dist",
     "rootDir": "./src",
@@ -9,7 +9,7 @@
       "ES2022.Object",
       "DOM"
     ],
-    "module": "ES2020",
+    "module": "NodeNext",
     "moduleResolution": "nodenext",
     "esModuleInterop": true,
     "declaration": true,
@@ -30,4 +30,4 @@
     "dist",
     "docs"
   ]
-}
+}

langchain-core/tsconfig.json

@@ -0,0 +1,87 @@
+import { defineConfig } from "tsup";
+export default defineConfig({
+  // Entry points - adjust for your package structure
+  entry: [
+    "src/agents.ts",
+    "src/caches/base.ts",
+    "src/callbacks/base.ts",
+    "src/callbacks/dispatch/index.ts",
+    "src/callbacks/dispatch/web.ts",
+    "src/callbacks/manager.ts",
+    "src/callbacks/promises.ts",
+    "src/chat_history.ts",
+    "src/context.ts",
+    "src/documents/index.ts",
+    "src/document_loaders/base.ts",
+    "src/document_loaders/langsmith.ts",
+    "src/embeddings.ts",
+    "src/example_selectors/index.ts",
+    "src/indexing/index.ts",
+    "src/language_models/base.ts",
+    "src/language_models/chat_models.ts",
+    "src/language_models/llms.ts",
+    "src/load/index.ts",
+    "src/load/serializable.ts",
+    "src/memory.ts",
+    "src/messages/index.ts",
+    "src/messages/tool.ts",
+    "src/output_parsers/index.ts",
+    "src/output_parsers/openai_tools/index.ts",
+    "src/output_parsers/openai_functions/index.ts",
+    "src/outputs.ts",
+    "src/prompts/index.ts",
+    "src/prompt_values.ts",
+    "src/runnables/index.ts",
+    "src/runnables/graph.ts",
+    "src/runnables/remote.ts",
+    "src/retrievers/index.ts",
+    "src/retrievers/document_compressors/base.ts",
+    "src/singletons/index.ts",
+    "src/stores.ts",
+    "src/structured_query/index.ts",
+    "src/tools/index.ts",
+    "src/tracers/base.ts",
+    "src/tracers/console.ts",
+    "src/tracers/initialize.ts",
+    "src/tracers/log_stream.ts",
+    "src/tracers/run_collector.ts",
+    "src/tracers/tracer_langchain.ts",
+    "src/tracers/tracer_langchain_v1.ts",
+    "src/types/stream.ts",
+    "src/utils/async_caller.ts",
+    "src/utils/chunk_array.ts",
+    "src/utils/env.ts",
+    "src/utils/event_source_parse.ts",
+    "src/utils/function_calling.ts",
+    "src/utils/hash.ts",
+    "src/utils/json_patch.ts",
+    "src/utils/json_schema.ts",
+    "src/utils/math.ts",
+    "src/utils/stream.ts",
+    "src/utils/testing/index.ts",
+    "src/utils/tiktoken.ts",
+    "src/utils/types/index.ts",
+    "src/vectorstores.ts",
+  ],
+  // Output both ESM and CJS formats
+  format: ["esm", "cjs"],
+  // Generate declaration files
+  dts: true,
+  // enable treeshaking
+  treeshake: "safest",
+  // Generate sourcemaps
+  sourcemap: true,
+  // Clean output directory before build
+  clean: true,
+  // Specify output directory
+  outDir: "dist",
+  // Set output extension based on format
+  outExtension({ format }) {
+    return {
+      js: format === "esm" ? ".js" : ".cjs",
+    };
+  },
+  // Ensure all external dependencies are properly excluded from the bundle
+  // These will be taken from package.json dependencies/peerDependencies
+  external: [],
+});

langchain-core/tsup.config.ts

@@ -7812,7 +7812,8 @@ __metadata:
     release-it: ^18.1.2
     rimraf: ^5.0.1
     ts-jest: ^29.1.0
-    typescript: ~5.1.6
+    tsup: ^8.4.0
+    typescript: ^5.4.5
     uuid: ^10.0.0
     web-streams-polyfill: ^4.0.0
     zod: ^3.22.4