Set up jest for testing and make small end-to-end test.

.github/workflows/test_langsmith_nodejs.yml

@@ -142,7 +142,7 @@ jobs:
           path: "${{ env.RUST_WORKSPACE_PATH }}/${{ env.BINDINGS_RELATIVE_PATH }}/langsmith-nodejs.*.node"
 
   test-macos-windows-bindings:
-    name: "Test bindings ${{ matrix.settings.target }} - node@${{ matrix.node }}"
+    name: "test node@${{ matrix.node }} on ${{ matrix.settings.target }}"
     needs:
       - build
     strategy:
@@ -197,13 +197,13 @@ jobs:
         shell: bash
         run: |
           # List downloaded bindings
-          ls -R .
+          ls .
 
           # Run tests.
           yarn test
 
   test-linux-bindings:
-    name: Test bindings on ${{ matrix.settings.target }} - node@${{ matrix.node }}
+    name: test node@${{ matrix.node }} on ${{ matrix.settings.target }}
     needs:
       - build
     strategy:
@@ -260,7 +260,7 @@ jobs:
         shell: bash
         run: |
           # List downloaded bindings
-          ls -R "$BINDINGS_RELATIVE_PATH"
+          ls "$BINDINGS_RELATIVE_PATH/"
 
           # Run tests.
           docker run \

rust/Cargo.toml

@@ -12,7 +12,7 @@ resolver = "2"
 chrono = "0.4.38"
 flate2 = "1.0.34"
 futures = "0.3.31"
-napi = { version = "2.16.13", features = ["napi9", "serde-json"] }
+napi = { version = "2.16.13", features = ["napi9", "serde-json", "async"] }
 napi-derive = "2.16.13"
 napi-build = "2.1.3"
 rayon = "1.10.0"

rust/crates/langsmith-nodejs/index.js

@@ -8,4 +8,4 @@ const { loadBinding } = require('@node-rs/helper')
  * `loadBinding` helper will load `langsmith-nodejs.[PLATFORM].node` from `__dirname` first
  * If failed to load addon, it will fallback to load from `langsmith-nodejs-[PLATFORM]`
  */
-module.exports = loadBinding(__dirname, 'langsmith-nodejs', 'langsmith-nodejs')
+module.exports = loadBinding(__dirname, "langsmith-nodejs", "langsmith-nodejs");

rust/crates/langsmith-nodejs/integration.test.ts

@@ -0,0 +1,13 @@
+/* eslint-disable @typescript-eslint/no-explicit-any */
+import * as lib from "./index.js";
+
+describe("Bindings", () => {
+  it("should should minimally work", async () => {
+    expect(lib.fibonacci(1)).toBe(1);
+    expect(lib.fibonacci(2)).toBe(1);
+    expect(lib.fibonacci(3)).toBe(2);
+    expect(lib.fibonacci(4)).toBe(3);
+    expect(lib.fibonacci(5)).toBe(5);
+    expect(lib.fibonacci(6)).toBe(8);
+  });
+});

rust/crates/langsmith-nodejs/jest.config.js

@@ -0,0 +1,7 @@
+/** @type {import('ts-jest').JestConfigWithTsJest} **/
+module.exports = {
+  testEnvironment: "node",
+  transform: {
+    "^.+.tsx?$": ["ts-jest", {}],
+  },
+};

rust/crates/langsmith-nodejs/npm/darwin-arm64/package.json

@@ -1,6 +1,6 @@
 {
   "name": "langsmith-nodejs-darwin-arm64",
-  "version": "0.0.0",
+  "version": "0.1.0",
   "os": [
     "darwin"
   ],
@@ -15,4 +15,4 @@
   "engines": {
     "node": ">= 18"
   }
-}
+}

rust/crates/langsmith-nodejs/npm/linux-x64-gnu/package.json

@@ -1,6 +1,6 @@
 {
   "name": "langsmith-nodejs-linux-x64-gnu",
-  "version": "0.0.0",
+  "version": "0.1.0",
   "os": [
     "linux"
   ],
@@ -15,4 +15,4 @@
   "engines": {
     "node": ">= 18"
   }
-}
+}

rust/crates/langsmith-nodejs/npm/linux-x64-musl/package.json

@@ -1,6 +1,6 @@
 {
   "name": "langsmith-nodejs-linux-x64-musl",
-  "version": "0.0.0",
+  "version": "0.1.0",
   "os": [
     "linux"
   ],
@@ -15,4 +15,4 @@
   "engines": {
     "node": ">= 18"
   }
-}
+}

rust/crates/langsmith-nodejs/npm/win32-x64-msvc/package.json

@@ -1,6 +1,6 @@
 {
   "name": "langsmith-nodejs-win32-x64-msvc",
-  "version": "0.0.0",
+  "version": "0.1.0",
   "os": [
     "win32"
   ],
@@ -15,4 +15,4 @@
   "engines": {
     "node": ">= 18"
   }
-}
+}

rust/crates/langsmith-nodejs/package.json

@@ -7,14 +7,20 @@
     "build": "napi build --platform --release",
     "build:debug": "napi build --platform",
     "prepublishOnly": "napi prepublish -t npm",
-    "test": "echo 'run tests here'",
+    "test": "jest",
     "version": "napi version"
   },
   "dependencies": {
     "@node-rs/helper": "^1.2.1"
   },
   "devDependencies": {
-    "@napi-rs/cli": "^1.0.0"
+    "@jest/globals": "^29.5.0",
+    "@napi-rs/cli": "^1.0.0",
+    "@tsconfig/recommended": "^1.0.8",
+    "@types/jest": "^29.5.14",
+    "jest": "^29.5.0",
+    "ts-jest": "^29.2.5",
+    "typescript": "^5.7.2"
   },
   "napi": {
     "name": "langsmith-nodejs",

rust/crates/langsmith-nodejs/src/lib.rs

@@ -0,0 +1,11 @@
+#[allow(unused_imports)]
+use napi::bindgen_prelude::*;
+use napi_derive::napi;
+
+#[napi]
+pub fn fibonacci(n: u32) -> u32 {
+  match n {
+    1 | 2 => 1,
+    _ => fibonacci(n - 1) + fibonacci(n - 2),
+  }
+}

rust/crates/langsmith-nodejs/tsconfig.json

@@ -0,0 +1,33 @@
+{
+  "extends": "@tsconfig/recommended",
+  "compilerOptions": {
+    "target": "ES2021",
+    "lib": [
+      "ES2021",
+      "ES2022.Object"
+    ],
+    "module": "NodeNext",
+    "moduleResolution": "nodenext",
+    "esModuleInterop": true,
+    "declaration": true,
+    "noImplicitReturns": true,
+    "noFallthroughCasesInSwitch": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "useDefineForClassFields": true,
+    "strictPropertyInitialization": false,
+    "stripInternal": true,
+    "allowJs": true,
+    "strict": true,
+    "outDir": "dist"
+  },
+  "include": [
+    "src/**/*"
+  ],
+  "exclude": [
+    "node_modules",
+    "dist",
+    "coverage"
+  ],
+  "includeVersion": true
+}