feat: add examples, workspace

.gitignore

@@ -4,3 +4,11 @@ lib/
 .turbo
 .eslintcache
 .env
+yarn-error.log
+
+.yarn/*
+!.yarn/patches
+!.yarn/plugins
+!.yarn/releases
+!.yarn/sdks
+!.yarn/versions

.husky/pre-commit

@@ -1,4 +1,4 @@
 #!/usr/bin/env sh
 . "$(dirname -- "$0")/_/husky.sh"
 
-yarn precommit
+npx turbo run precommit

.yarnrc.yml

@@ -0,0 +1,7 @@
+nodeLinker: node-modules
+
+plugins:
+  - path: .yarn/plugins/@yarnpkg/plugin-typescript.cjs
+    spec: "@yarnpkg/plugin-typescript"
+
+yarnPath: .yarn/releases/yarn-3.4.1.cjs

examples/.env.example

@@ -0,0 +1,2 @@
+OPENAI_API_KEY=ADD_YOUR_API_KEY_HERE
+SERPAPI_API_KEY=ADD_YOUR_API_KEY_HERE

examples/package.json

@@ -0,0 +1,36 @@
+{
+  "name": "langchain-examples",
+  "version": "0.0.0",
+  "private": true,
+  "description": "Langchain examples",
+  "main": "./dist/index.js",
+  "files": [
+    "dist/"
+  ],
+  "scripts": {
+    "build": "tsc --declaration --outDir dist/",
+    "start": "yarn build && node -r dotenv/config dist/index.js",
+    "lint": "eslint src",
+    "lint:fix": "yarn lint --fix"
+  },
+  "author": "Langchain",
+  "license": "MIT",
+  "dependencies": {
+    "langchain": "workspace:*",
+    "openai": "^3.1.0",
+    "serpapi": "^1.1.0"
+  },
+  "devDependencies": {
+    "@tsconfig/recommended": "^1.0.2",
+    "@typescript-eslint/eslint-plugin": "^5.51.0",
+    "@typescript-eslint/parser": "^5.51.0",
+    "dotenv": "^16.0.3",
+    "eslint": "^8.33.0",
+    "eslint-config-airbnb-base": "^15.0.0",
+    "eslint-config-prettier": "^8.6.0",
+    "eslint-plugin-import": "^2.27.5",
+    "eslint-plugin-prettier": "^4.2.1",
+    "prettier": "^2.8.3",
+    "typescript": "^4.9.5"
+  }
+}

examples/src/agent.ts

@@ -0,0 +1,28 @@
+import { OpenAI } from "langchain";
+import { loadAgent, AgentExecutor } from "langchain/agents";
+import { SerpAPI } from "langchain/tools";
+
+export const run = async () => {
+  const model = new OpenAI();
+  const tools = [SerpAPI()];
+
+  const agent = await loadAgent(
+    "lc://agents/zero-shot-react-description/agent.json",
+    { llm: model, tools }
+  );
+  console.log("Loaded agent from Langchain hub");
+
+  const executor = AgentExecutor.fromAgentAndTools({
+    agent,
+    tools,
+    returnIntermediateSteps: true,
+  });
+
+  const input = "Who is Olivia Wilde's boyfriend?" +
+    " What is his current age raised to the 0.23 power?";
+  console.log(`Executing with input "${input}"...`);
+
+  const result = await executor.call({ input });
+
+  console.log(`Got output ${result.output}`);
+};

examples/src/index.ts

@@ -0,0 +1,12 @@
+import path from "path";
+
+const [exampleName, ...args] = process.argv.slice(2);
+let runExample;
+try {
+  // eslint-disable-next-line import/no-dynamic-require,global-require
+  ({ run: runExample } = require(path.join(__dirname, exampleName)));
+} catch {
+  throw new Error(`Could not load example ${exampleName}`);
+}
+
+runExample(args);

tsconfig.json → examples/tsconfig.json

@@ -3,7 +3,7 @@
   "compilerOptions": {
     "outDir": "dist",
     "lib": ["ESNext", "DOM"],
-    "moduleResolution": "node",
+    "moduleResolution": "nodenext",
     "sourceMap": true,
     "allowSyntheticDefaultImports": true,
     "baseUrl": "./src",

langchain/.env.example

@@ -0,0 +1,2 @@
+OPENAI_API_KEY=ADD_YOUR_API_KEY_HERE
+SERPAPI_API_KEY=ADD_YOUR_API_KEY_HERE

langchain/.eslintrc.js

@@ -0,0 +1,40 @@
+module.exports = {
+  extends: [
+    "airbnb-base",
+    "eslint:recommended",
+    "prettier",
+    "plugin:@typescript-eslint/recommended",
+  ],
+  parserOptions: {
+    ecmaVersion: 12,
+    parser: "@typescript-eslint/parser",
+    sourceType: "module",
+  },
+  plugins: ["@typescript-eslint"],
+  ignorePatterns: ["dist", "node_modules"],
+  rules: {
+    "@typescript-eslint/explicit-module-boundary-types": 0,
+    "@typescript-eslint/no-empty-function": 0,
+    "@typescript-eslint/no-shadow": 0,
+    "@typescript-eslint/no-use-before-define": ["error", "nofunc"],
+    "@typescript-eslint/no-unused-vars": ["warn", { args: "none" }],
+    "camelcase": 0,
+    "class-methods-use-this": 0,
+    "import/extensions": 0,
+    "import/no-extraneous-dependencies": ["error", {"devDependencies": ["**/*.test.ts"]}],
+    "import/no-unresolved": 0,
+    "import/prefer-default-export": 0,
+    "keyword-spacing": "error",
+    "max-classes-per-file": 0,
+    "max-len": ["error", { code: 100, tabWidth: 2, ignoreComments: true }],
+    "no-await-in-loop": 0,
+    "no-bitwise": 0,
+    "no-console": 0,
+    "no-restricted-syntax": 0,
+    "no-shadow": 0,
+    "no-underscore-dangle": 0,
+    "no-use-before-define": 0,
+    "no-useless-constructor": 0,
+    "semi": ["error", "always"],
+  },
+};

langchain/babel.config.js

@@ -0,0 +1,2 @@
+// babel.config.js
+module.exports = {presets: ['@babel/preset-env']};

jest.config.js → langchain/jest.config.js

@@ -2,6 +2,7 @@
 module.exports = {
   preset: 'ts-jest/presets/js-with-ts',
   testEnvironment: 'node',
+  modulePathIgnorePatterns: ["dist/"],
   transform: {
     "^.+\\.(ts|tsx)$": "ts-jest",
     "^.+\\.(js)$": "babel-jest",

langchain/package.json

@@ -0,0 +1,97 @@
+{
+  "name": "langchain",
+  "version": "0.0.4",
+  "description": "Typescript bindings for langchain",
+  "main": "./dist/cjs/index.js",
+  "module": "./dist/esm/index.js",
+  "types": "./dist/index.d.ts",
+  "files": [
+    "dist/"
+  ],
+  "exports": {
+    ".": {
+      "types": "./dist/cjs/index.d.ts",
+      "require": "./dist/cjs/index.js",
+      "import": "./dist/esm/index.js"
+    },
+    "./agents": {
+      "types": "./dist/cjs/agents/index.d.ts",
+      "require": "./dist/cjs/agents/index.js",
+      "import": "./dist/esm/agents/index.js"
+    },
+    "./tools": {
+      "types": "./dist/cjs/agents/tools/index.d.ts",
+      "require": "./dist/cjs/agents/tools/index.js",
+      "import": "./dist/esm/agents/tools/index.js"
+    },
+    "./prompt": {
+      "types": "./dist/cjs/prompt/index.d.ts",
+      "require": "./dist/cjs/prompt/index.js",
+      "import": "./dist/esm/prompt/index.js"
+    },
+    "./chains": {
+      "types": "./dist/cjs/chains/index.d.ts",
+      "require": "./dist/cjs/chains/index.js",
+      "import": "./dist/esm/chains/index.js"
+    },
+    "./llms": {
+      "types": "./dist/cjs/llms/index.d.ts",
+      "require": "./dist/cjs/llms/index.js",
+      "import": "./dist/esm/llms/index.js"
+    }
+  },
+  "scripts": {
+    "build": "tsc --declaration --outDir dist/esm --module esnext && tsc --declaration --outDir dist/cjs",
+    "lint": "eslint .",
+    "lint:fix": "yarn lint --fix",
+    "precommit": "tsc --noEmit && lint-staged",
+    "clean": "rm -rf dist/",
+    "prepack": "yarn build",
+    "test": "jest",
+    "prepare": "husky install"
+  },
+  "author": "Langchain",
+  "license": "MIT",
+  "devDependencies": {
+    "@babel/core": "^7.20.12",
+    "@babel/preset-env": "^7.20.2",
+    "@jest/globals": "^29.4.2",
+    "@tsconfig/recommended": "^1.0.2",
+    "@types/node-fetch": "2",
+    "@typescript-eslint/eslint-plugin": "^5.51.0",
+    "@typescript-eslint/parser": "^5.51.0",
+    "babel-jest": "^29.4.2",
+    "dotenv": "^16.0.3",
+    "eslint": "^8.33.0",
+    "eslint-config-airbnb-base": "^15.0.0",
+    "eslint-config-prettier": "^8.6.0",
+    "eslint-plugin-import": "^2.27.5",
+    "eslint-plugin-prettier": "^4.2.1",
+    "husky": "^8.0.3",
+    "jest": "^29.4.2",
+    "lint-staged": "^13.1.1",
+    "openai": "^3.1.0",
+    "prettier": "^2.8.3",
+    "serpapi": "^1.1.0",
+    "ts-jest": "^29.0.5",
+    "typescript": "^4.9.5"
+  },
+  "dependencies": {
+    "exponential-backoff": "^3.1.0",
+    "node-fetch": "2",
+    "yaml": "^2.2.1"
+  },
+  "optionalDependencies": {
+    "openai": "^3.1.0",
+    "serpapi": "^1.1.0"
+  },
+  "lint-staged": {
+    "**/*.{ts,tsx}": [
+      "prettier --write --ignore-unknown",
+      "eslint --cache --fix"
+    ]
+  },
+  "publishConfig": {
+    "access": "public"
+  }
+}

langchain/tsconfig.json

@@ -0,0 +1,21 @@
+{
+  "extends": "@tsconfig/recommended",
+  "compilerOptions": {
+    "outDir": "dist",
+    "lib": ["ESNext", "DOM"],
+    "moduleResolution": "node",
+    "sourceMap": true,
+    "allowSyntheticDefaultImports": true,
+    "baseUrl": "./",
+    "declaration": true,
+    "experimentalDecorators": true,
+    "noImplicitReturns": true,
+    "noFallthroughCasesInSwitch": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "useDefineForClassFields": true,
+    "strictPropertyInitialization": false
+  },
+  "exclude": ["node_modules/", "dist/", "tests/"],
+  "include": ["./"]
+}