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2 Commits

Author SHA1 Message Date
Sourabh Desai cd24ebf926 fix instantiation 2023-07-17 22:32:53 +00:00
Sourabh Desai 52f8ca133c small improvements to listindex instantiation 2023-07-17 22:31:46 +00:00
1926 changed files with 8269 additions and 192563 deletions
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# Changesets
Hello and welcome! This folder has been automatically generated by `@changesets/cli`, a build tool that works
with multi-package repos, or single-package repos to help you version and publish your code. You can
find the full documentation for it [in our repository](https://github.com/changesets/changesets)
We have a quick list of common questions to get you started engaging with this project in
[our documentation](https://github.com/changesets/changesets/blob/main/docs/common-questions.md)
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{
"$schema": "https://unpkg.com/@changesets/config@2.3.1/schema.json",
"changelog": "@changesets/cli/changelog",
"commit": false,
"fixed": [],
"linked": [],
"access": "public",
"baseBranch": "main",
"updateInternalDependencies": "patch",
"ignore": []
}
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@@ -1,16 +0,0 @@
{
"jsc": {
"parser": {
"syntax": "typescript",
"decorators": true
},
"target": "esnext",
"transform": {
"decoratorVersion": "2022-03"
}
},
"module": {
"type": "commonjs",
"ignoreDynamic": true
}
}
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@@ -1,76 +0,0 @@
module.exports = {
root: true,
extends: [
"turbo",
"prettier",
"plugin:@typescript-eslint/recommended-type-checked-only",
],
parserOptions: {
project: true,
__tsconfigRootDir: __dirname,
},
settings: {
react: {
version: "999.999.999",
},
},
rules: {
"max-params": ["error", 4],
"prefer-const": "error",
"@typescript-eslint/no-floating-promises": [
"error",
{
ignoreIIFE: true,
},
],
"@typescript-eslint/await-thenable": "off",
"@typescript-eslint/ban-ts-comment": "off",
"@typescript-eslint/ban-types": "off",
"no-array-constructor": "off",
"@typescript-eslint/no-array-constructor": "off",
"@typescript-eslint/no-base-to-string": "off",
"@typescript-eslint/no-duplicate-enum-values": "off",
"@typescript-eslint/no-duplicate-type-constituents": "off",
"@typescript-eslint/no-explicit-any": "off",
"@typescript-eslint/no-extra-non-null-assertion": "off",
"@typescript-eslint/no-for-in-array": "off",
"no-implied-eval": "off",
"@typescript-eslint/no-implied-eval": "off",
"no-loss-of-precision": "off",
"@typescript-eslint/no-loss-of-precision": "off",
"@typescript-eslint/no-misused-new": "off",
"@typescript-eslint/no-misused-promises": "off",
"@typescript-eslint/no-namespace": "off",
"@typescript-eslint/no-non-null-asserted-optional-chain": "off",
"@typescript-eslint/no-redundant-type-constituents": "off",
"@typescript-eslint/no-this-alias": "off",
"@typescript-eslint/no-unnecessary-type-assertion": "off",
"@typescript-eslint/no-unnecessary-type-constraint": "off",
"@typescript-eslint/no-unsafe-argument": "off",
"@typescript-eslint/no-unsafe-assignment": "off",
"@typescript-eslint/no-unsafe-call": "off",
"@typescript-eslint/no-unsafe-declaration-merging": "off",
"@typescript-eslint/no-unsafe-enum-comparison": "off",
"@typescript-eslint/no-unsafe-member-access": "off",
"@typescript-eslint/no-unsafe-return": "off",
"no-unused-vars": "off",
"@typescript-eslint/no-unused-vars": "off",
"@typescript-eslint/no-var-requires": "off",
"@typescript-eslint/prefer-as-const": "off",
"require-await": "off",
"@typescript-eslint/require-await": "off",
"@typescript-eslint/restrict-plus-operands": "off",
"@typescript-eslint/restrict-template-expressions": "off",
"@typescript-eslint/triple-slash-reference": "off",
"@typescript-eslint/unbound-method": "off",
},
overrides: [
{
files: ["examples/**/*.ts"],
rules: {
"turbo/no-undeclared-env-vars": "off",
},
},
],
ignorePatterns: ["dist/", "lib/", "deps/"],
};
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module.exports = {
root: true,
// This tells ESLint to load the config from the package `eslint-config-custom`
extends: ["custom"],
settings: {
next: {
rootDir: ["apps/*/"],
},
},
};
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@@ -1,2 +0,0 @@
examples/readers/data/** binary
examples/data/** binary
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name: Bugfix
title: ""
description: Write something like "We notice ... behavior when ... happens instead of ..." If you would like to use sweep.dev prefix with "Sweep:"
body:
- type: textarea
id: description
attributes:
label: Details
description: More details about the bug
placeholder: The bug might be in ... file
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name: Feature Request
title: ""
description: Write something like "Write an api endpoint that does "..." in the "..." file". If you would like to use sweep.dev prefix with "Sweep:"
body:
- type: textarea
id: description
attributes:
label: Details
description: More details
placeholder: The new endpoint should use the ... class from ... file because it contains ... logic
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@@ -1,10 +0,0 @@
name: Refactor
title: ""
description: Write something like "Modify the ... api endpoint to use ... version and ... framework" If you would like to use sweep.dev prefix with "Sweep:"
body:
- type: textarea
id: description
attributes:
label: Details
description: More details
placeholder: We are migrating this function to ... version because ...
@@ -1,27 +0,0 @@
name: Lint on push or pull request
on:
push:
branches:
- main
pull_request:
branches:
- main
jobs:
lint:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: pnpm/action-setup@v3
- name: Setup Node.js
uses: actions/setup-node@v4
with:
node-version-file: ".nvmrc"
cache: "pnpm"
- name: Install dependencies
run: pnpm install
- name: Run lint
run: pnpm run lint
- name: Run Prettier
run: pnpm run format
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name: Publish
on:
push:
branches:
- main
jobs:
publish:
runs-on: ubuntu-latest
permissions:
contents: read
id-token: write
steps:
- uses: actions/checkout@v4
- uses: pnpm/action-setup@v3
- name: Setup Node.js
uses: actions/setup-node@v4
with:
node-version-file: ".nvmrc"
cache: "pnpm"
- name: Install dependencies
run: pnpm install
- name: Publish @llamaindex/env
run: npx jsr publish
working-directory: packages/env
env:
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
- name: Publish @llamaindex/core
run: npx jsr publish --allow-slow-types
working-directory: packages/core
env:
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
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name: Publish to GitHub Releases
on:
push:
tags:
- "llamaindex@*"
jobs:
build-and-publish:
runs-on: ubuntu-latest
steps:
- name: Checkout Repo
uses: actions/checkout@v4
- uses: pnpm/action-setup@v3
- name: Setup Node.js
uses: actions/setup-node@v4
with:
node-version-file: ".nvmrc"
cache: "pnpm"
- name: Install dependencies
run: pnpm install
- name: Build tarball
run: |
pnpm pack
working-directory: packages/core
- name: Create release
uses: ncipollo/release-action@v1
with:
artifacts: "packages/core/llamaindex-*.tgz"
name: Release ${{ github.ref }}
bodyFile: "packages/core/CHANGELOG.md"
token: ${{ secrets.GITHUB_TOKEN }}
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name: Release
on:
push:
branches:
- main
concurrency: ${{ github.workflow }}-${{ github.ref }}
jobs:
release:
name: Release
runs-on: ubuntu-latest
steps:
- name: Checkout Repo
uses: actions/checkout@v4
- uses: pnpm/action-setup@v3
- name: Setup Node.js
uses: actions/setup-node@v4
with:
node-version-file: ".nvmrc"
cache: "pnpm"
- name: Install dependencies
run: pnpm install
- name: Add auth token to .npmrc file
run: |
cat << EOF >> ".npmrc"
//registry.npmjs.org/:_authToken=$NPM_TOKEN
EOF
env:
NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
- name: Get changeset status
id: get-changeset-status
run: |
pnpm changeset status --output .changeset/status.json
new_version=$(jq -r '.releases[] | select(.name == "llamaindex") | .newVersion' < .changeset/status.json)
rm -v .changeset/status.json
echo "new-version=${new_version}" >> "$GITHUB_OUTPUT"
- name: Create Release Pull Request or Publish to npm
id: changesets
uses: changesets/action@v1
with:
commit: Release ${{ steps.get-changeset-status.outputs.new-version }}
title: Release ${{ steps.get-changeset-status.outputs.new-version }}
# update version PR with the latest changesets
version: pnpm new-version
# build package and call changeset publish
publish: pnpm release
env:
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
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name: Run Tests
on:
push:
branches:
- main
pull_request:
branches:
- main
concurrency:
group: ${{ github.workflow }}-${{ github.ref }}
cancel-in-progress: true
jobs:
e2e:
strategy:
fail-fast: false
matrix:
node-version: [18.x, 20.x, 22.x]
name: E2E on Node.js ${{ matrix.node-version }}
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: pnpm/action-setup@v3
- name: Setup Node.js
uses: actions/setup-node@v4
with:
node-version: ${{ matrix.node-version }}
cache: "pnpm"
- name: Install dependencies
run: pnpm install
- name: Run E2E Tests
run: pnpm run e2e
test:
strategy:
fail-fast: false
matrix:
node-version: [18.x, 20.x, 22.x]
name: Test on Node.js ${{ matrix.node-version }}
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: pnpm/action-setup@v3
- name: Setup Node.js
uses: actions/setup-node@v4
with:
node-version: ${{ matrix.node-version }}
cache: "pnpm"
- name: Install dependencies
run: pnpm install
- name: Run tests
run: pnpm run test
typecheck:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: pnpm/action-setup@v3
- name: Setup Node.js
uses: actions/setup-node@v4
with:
node-version-file: ".nvmrc"
cache: "pnpm"
- name: Install dependencies
run: pnpm install
- name: Build
run: pnpm run build --filter llamaindex
- name: Use Build For Examples
run: pnpm link ../packages/core/
working-directory: ./examples
- name: Run Type Check
run: pnpm run type-check
- name: Run Circular Dependency Check
run: pnpm run circular-check
working-directory: ./packages/core
- uses: actions/upload-artifact@v3
if: failure()
with:
name: typecheck-build-dist
path: ./packages/core/dist
if-no-files-found: error
e2e-core-examples:
strategy:
matrix:
packages:
- cloudflare-worker-agent
- nextjs-agent
- nextjs-edge-runtime
- waku-query-engine
runs-on: ubuntu-latest
name: Build Core Example (${{ matrix.packages }})
steps:
- uses: actions/checkout@v4
- uses: pnpm/action-setup@v3
- name: Setup Node.js
uses: actions/setup-node@v4
with:
node-version-file: ".nvmrc"
cache: "pnpm"
- name: Install dependencies
run: pnpm install
- name: Build llamaindex
run: pnpm run build --filter llamaindex
- name: Build ${{ matrix.packages }}
run: pnpm run build
working-directory: packages/core/e2e/examples/${{ matrix.packages }}
typecheck-examples:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: pnpm/action-setup@v3
- name: Setup Node.js
uses: actions/setup-node@v4
with:
node-version-file: ".nvmrc"
cache: "pnpm"
- name: Install dependencies
run: pnpm install
- name: Build
run: pnpm run build --filter llamaindex
- name: Copy examples
run: rsync -rv --exclude=node_modules ./examples ${{ runner.temp }}
- name: Pack @llamaindex/env
run: pnpm pack --pack-destination ${{ runner.temp }}
working-directory: packages/env
- name: Pack llamaindex
run: pnpm pack --pack-destination ${{ runner.temp }}
working-directory: packages/core
- name: Install
run: npm add ${{ runner.temp }}/*.tgz
working-directory: ${{ runner.temp }}/examples
- name: Run Type Check
run: npx tsc --project ./tsconfig.json
working-directory: ${{ runner.temp }}/examples
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# dependencies
node_modules
.pnp
.pnpm-store
.pnp.js
# testing
@@ -36,15 +35,4 @@ yarn-error.log*
# vercel
.vercel
dist/
lib/
.cache
test-results/
playwright-report/
blob-report/
playwright/.cache/
.tsbuildinfo
# intellij
**/.idea
storage/
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pnpm format:write
#!/usr/bin/env sh
. "$(dirname -- "$0")/_/husky.sh"
pnpm lint
npx lint-staged
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#!/usr/bin/env sh
. "$(dirname -- "$0")/_/husky.sh"
pnpm test
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auto-install-peers = true
enable-pre-post-scripts = true
prefer-workspace-packages = true
save-workspace-protocol = true
link-workspace-packages = true
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@@ -1 +0,0 @@
20
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@@ -1,6 +0,0 @@
apps/docs/i18n
apps/docs/docs/api
pnpm-lock.yaml
lib/
dist/
.docusaurus/
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{
"jsc": {
"parser": {
"syntax": "typescript",
"decorators": true
},
"target": "esnext",
"transform": {
"decoratorVersion": "2022-03"
}
}
}
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{
// Use IntelliSense to learn about possible attributes.
// Hover to view descriptions of existing attributes.
// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
"version": "0.2.0",
"configurations": [
{
"type": "node",
"request": "launch",
"name": "Debug Example",
"skipFiles": ["<node_internals>/**"],
"runtimeExecutable": "pnpm",
"console": "integratedTerminal",
"cwd": "${workspaceFolder}/examples",
"runtimeArgs": ["npx", "tsx", "${file}"]
}
]
}
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@@ -1,17 +1,5 @@
{
"editor.tabSize": 2,
"editor.formatOnSave": true,
"editor.defaultFormatter": "esbenp.prettier-vscode",
"[xml]": {
"editor.defaultFormatter": "redhat.vscode-xml"
},
"[python]": {
"editor.defaultFormatter": "ms-python.black-formatter"
},
"[jsonc]": {
"editor.defaultFormatter": "esbenp.prettier-vscode"
},
"[json]": {
"editor.defaultFormatter": "esbenp.prettier-vscode"
}
"editor.defaultFormatter": "esbenp.prettier-vscode"
}
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# Contributing
## Structure
This is a monorepo built with Turborepo
Right now there are two packages of importance:
packages/core which is the main NPM library llamaindex
examples is where the demo code lives
### Turborepo docs
You can checkout how Turborepo works using the default [README-turborepo.md](/README-turborepo.md)
## Getting Started
Install NodeJS. Preferably v18 using nvm or n.
Inside the LlamaIndexTS directory:
```
npm i -g pnpm ts-node
pnpm install
```
Note: we use pnpm in this repo, which has a lot of the same functionality and CLI options as npm but it does do some things better in a monorepo, like centralizing dependencies and caching.
PNPM's has documentation on its [workspace feature](https://pnpm.io/workspaces) and Turborepo had some [useful documentation also](https://turbo.build/repo/docs/core-concepts/monorepos/running-tasks).
### Running Typescript
When we publish to NPM we will have a tsc compiled version of the library in JS. For now, the easiest thing to do is use ts-node.
### Test cases
To run them, run
```
pnpm run test
```
To write new test cases write them in [packages/core/src/tests](/packages/core/src/tests)
We use Jest https://jestjs.io/ to write our test cases. Jest comes with a bunch of built in assertions using the expect function: https://jestjs.io/docs/expect
### Demo applications
There is an existing ["example"](/examples/README.md) demos folder with mainly NodeJS scripts. Feel free to add additional demos to that folder. If you would like to try out your changes in the core package with a new demo, you need to run the build command in the README.
You can create new demo applications in the apps folder. Just run pnpm init in the folder after you create it to create its own package.json
### Installing packages
To install packages for a specific package or demo application, run
```
pnpm add [NPM Package] --filter [package or application i.e. core or docs]
```
To install packages for every package or application run
```
pnpm add -w [NPM Package]
```
### Docs
To contribute to the docs, go to the docs website folder and run the Docusaurus instance.
```bash
cd apps/docs
pnpm install
pnpm start
```
That should start a webserver which will serve the docs on https://localhost:3000
Any changes you make should be reflected in the browser. If you need to regenerate the API docs and find that your TSDoc isn't getting the updates, feel free to remove apps/docs/api. It will automatically regenerate itself when you run pnpm start again.
## Changeset
We use [changesets](https://github.com/changesets/changesets) for managing versions and changelogs. To create a new changeset, run:
```
pnpm changeset
```
Please send a descriptive changeset for each PR.
## Publishing (maintainers only)
The [Release Github Action](.github/workflows/release.yml) is automatically generating and updating a
PR called "Release {version}".
This PR will update the `package.json` and `CHANGELOG.md` files of each package according to
the current changesets in the [.changeset](.changeset/) folder.
If this PR is merged it will automatically add version tags to the repository and publish the updated packages to NPM.
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# Turborepo starter
This is an official starter Turborepo.
## Using this example
Run the following command:
```sh
npx create-turbo@latest
```
## What's inside?
This Turborepo includes the following packages/apps:
### Apps and Packages
- `docs`: a [Next.js](https://nextjs.org/) app
- `web`: another [Next.js](https://nextjs.org/) app
- `ui`: a stub React component library shared by both `web` and `docs` applications
- `eslint-config-custom`: `eslint` configurations (includes `eslint-config-next` and `eslint-config-prettier`)
- `tsconfig`: `tsconfig.json`s used throughout the monorepo
Each package/app is 100% [TypeScript](https://www.typescriptlang.org/).
### Utilities
This Turborepo has some additional tools already setup for you:
- [TypeScript](https://www.typescriptlang.org/) for static type checking
- [ESLint](https://eslint.org/) for code linting
- [Prettier](https://prettier.io) for code formatting
### Build
To build all apps and packages, run the following command:
```
cd my-turborepo
pnpm build
```
### Develop
To develop all apps and packages, run the following command:
```
cd my-turborepo
pnpm dev
```
### Remote Caching
Turborepo can use a technique known as [Remote Caching](https://turbo.build/repo/docs/core-concepts/remote-caching) to share cache artifacts across machines, enabling you to share build caches with your team and CI/CD pipelines.
By default, Turborepo will cache locally. To enable Remote Caching you will need an account with Vercel. If you don't have an account you can [create one](https://vercel.com/signup), then enter the following commands:
```
cd my-turborepo
npx turbo login
```
This will authenticate the Turborepo CLI with your [Vercel account](https://vercel.com/docs/concepts/personal-accounts/overview).
Next, you can link your Turborepo to your Remote Cache by running the following command from the root of your Turborepo:
```
npx turbo link
```
## Useful Links
Learn more about the power of Turborepo:
- [Tasks](https://turbo.build/repo/docs/core-concepts/monorepos/running-tasks)
- [Caching](https://turbo.build/repo/docs/core-concepts/caching)
- [Remote Caching](https://turbo.build/repo/docs/core-concepts/remote-caching)
- [Filtering](https://turbo.build/repo/docs/core-concepts/monorepos/filtering)
- [Configuration Options](https://turbo.build/repo/docs/reference/configuration)
- [CLI Usage](https://turbo.build/repo/docs/reference/command-line-reference)
+38 -227
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# LlamaIndex.TS
# LlamaScript: LlamaIndex for TS/JS
[![NPM Version](https://img.shields.io/npm/v/llamaindex)](https://www.npmjs.com/package/llamaindex)
[![NPM License](https://img.shields.io/npm/l/llamaindex)](https://www.npmjs.com/package/llamaindex)
[![NPM Downloads](https://img.shields.io/npm/dm/llamaindex)](https://www.npmjs.com/package/llamaindex)
[![Discord](https://img.shields.io/discord/1059199217496772688)](https://discord.com/invite/eN6D2HQ4aX)
## Structure
LlamaIndex is a data framework for your LLM application.
This is a monorepo built with Turborepo
Use your own data with large language models (LLMs, OpenAI ChatGPT and others) in Typescript and Javascript.
Right now there are two packages of importance:
Documentation: https://ts.llamaindex.ai/
packages/core which is the main NPM library @llamaindex/core
Try examples online:
apps/simple is where the demo code lives
[![Open in Stackblitz](https://developer.stackblitz.com/img/open_in_stackblitz.svg)](https://stackblitz.com/github/run-llama/LlamaIndexTS/tree/main/examples)
### Turborepo docs
## What is LlamaIndex.TS?
You can checkout how Turborepo works using the built in [README-turborepo.md](README-turborepo.md)
LlamaIndex.TS aims to be a lightweight, easy to use set of libraries to help you integrate large language models into your applications with your own data.
## Getting Started
## Multiple JS Environment Support
Install NodeJS. Preferably v18 using nvm or n.
LlamaIndex.TS supports multiple JS environments, including:
Inside the llamascript directory:
- Node.js (18, 20, 22) ✅
- Deno ✅
- Bun ✅
- React Server Components (Next.js) ✅
For now, browser support is limited due to the lack of support for [AsyncLocalStorage-like APIs](https://github.com/tc39/proposal-async-context)
## Getting started
```shell
npm install llamaindex
pnpm install llamaindex
yarn add llamaindex
jsr install @llamaindex/core
```
npm i -g pnpm ts-node
pnpm install
```
### Node.js
Note: we use pnpm in this repo, which has a lot of the same functionality and CLI options as npm but it does do some things better in a monorepo, like centralizing dependencies and caching.
```ts
import fs from "fs/promises";
import { Document, VectorStoreIndex } from "llamaindex";
PNPM's has documentation on its [workspace feature](https://pnpm.io/workspaces) and Turborepo had some [useful documentation also](https://turbo.build/repo/docs/core-concepts/monorepos/running-tasks).
async function main() {
// Load essay from abramov.txt in Node
const essay = await fs.readFile(
"node_modules/llamaindex/examples/abramov.txt",
"utf-8",
);
### Running Typescript
// Create Document object with essay
const document = new Document({ text: essay });
When we publish to NPM we will have a tsc compiled version of the library in JS. For now, the easiest thing to do is use ts-node.
// Split text and create embeddings. Store them in a VectorStoreIndex
const index = await VectorStoreIndex.fromDocuments([document]);
### Test cases
// Query the index
const queryEngine = index.asQueryEngine();
const response = await queryEngine.query({
query: "What did the author do in college?",
});
To run them, run
// Output response
console.log(response.toString());
}
main();
```
pnpm run test
```
```bash
# `pnpm install tsx` before running the script
node --import tsx ./main.ts
To write new test cases write them in packages/core/src/tests
We use Jest https://jestjs.io/ to write our test cases. Jest comes with a bunch of built in assertions using the expect function: https://jestjs.io/docs/expect
### Demo applications
You can create new demo applications in the apps folder. Just run pnpm init in the folder after you create it to create its own package.json
### Installing packages
To install packages for a specific package or demo application, run
```
pnpm add [NPM Package] --filter [package or application i.e. core or simple]
```
### Next.js
To install packages for every package or application run
You can combine `ai` with `llamaindex` in Next.js with RSC (React Server Components).
```tsx
// src/apps/page.tsx
"use client";
import { chatWithAgent } from "@/actions";
import type { JSX } from "react";
import { useFormState } from "react-dom";
// You can use the Edge runtime in Next.js by adding this line:
// export const runtime = "edge";
export default function Home() {
const [ui, action] = useFormState<JSX.Element | null>(async () => {
return chatWithAgent("hello!", []);
}, null);
return (
<main>
{ui}
<form action={action}>
<button>Chat</button>
</form>
</main>
);
}
```
```tsx
// src/actions/index.ts
"use server";
import { createStreamableUI } from "ai/rsc";
import { OpenAIAgent } from "llamaindex";
import type { ChatMessage } from "llamaindex/llm/types";
export async function chatWithAgent(
question: string,
prevMessages: ChatMessage[] = [],
) {
const agent = new OpenAIAgent({
tools: [
// ... adding your tools here
],
});
const responseStream = await agent.chat({
stream: true,
message: question,
chatHistory: prevMessages,
});
const uiStream = createStreamableUI(<div>loading...</div>);
responseStream
.pipeTo(
new WritableStream({
start: () => {
uiStream.update("response:");
},
write: async (message) => {
uiStream.append(message.response.delta);
},
}),
)
.catch(console.error);
return uiStream.value;
}
pnpm add -w [NPM Package]
```
### Cloudflare Workers
```ts
// src/index.ts
export default {
async fetch(
request: Request,
env: Env,
ctx: ExecutionContext,
): Promise<Response> {
const { setEnvs } = await import("@llamaindex/env");
// set environment variables so that the OpenAIAgent can use them
setEnvs(env);
const { OpenAIAgent } = await import("llamaindex");
const agent = new OpenAIAgent({
tools: [],
});
const responseStream = await agent.chat({
stream: true,
message: "Hello? What is the weather today?",
});
const textEncoder = new TextEncoder();
const response = responseStream.pipeThrough(
new TransformStream({
transform: (chunk, controller) => {
controller.enqueue(textEncoder.encode(chunk.response.delta));
},
}),
);
return new Response(response);
},
};
```
## Playground
Check out our NextJS playground at https://llama-playground.vercel.app/. The source is available at https://github.com/run-llama/ts-playground
## Core concepts for getting started:
- [Document](/packages/core/src/Node.ts): A document represents a text file, PDF file or other contiguous piece of data.
- [Node](/packages/core/src/Node.ts): The basic data building block. Most commonly, these are parts of the document split into manageable pieces that are small enough to be fed into an embedding model and LLM.
- [Embedding](/packages/core/src/embeddings/OpenAIEmbedding.ts): Embeddings are sets of floating point numbers which represent the data in a Node. By comparing the similarity of embeddings, we can derive an understanding of the similarity of two pieces of data. One use case is to compare the embedding of a question with the embeddings of our Nodes to see which Nodes may contain the data needed to answer that quesiton. Because the default service context is OpenAI, the default embedding is `OpenAIEmbedding`. If using different models, say through Ollama, use this [Embedding](/packages/core/src/embeddings/OllamaEmbedding.ts) (see all [here](/packages/core/src/embeddings)).
- [Indices](/packages/core/src/indices/): Indices store the Nodes and the embeddings of those nodes. QueryEngines retrieve Nodes from these Indices using embedding similarity.
- [QueryEngine](/packages/core/src/engines/query/RetrieverQueryEngine.ts): Query engines are what generate the query you put in and give you back the result. Query engines generally combine a pre-built prompt with selected Nodes from your Index to give the LLM the context it needs to answer your query. To build a query engine from your Index (recommended), use the [`asQueryEngine`](/packages/core/src/indices/BaseIndex.ts) method on your Index. See all query engines [here](/packages/core/src/engines/query).
- [ChatEngine](/packages/core/src/engines/chat/SimpleChatEngine.ts): A ChatEngine helps you build a chatbot that will interact with your Indices. See all chat engines [here](/packages/core/src/engines/chat).
- [SimplePrompt](/packages/core/src/Prompt.ts): A simple standardized function call definition that takes in inputs and formats them in a template literal. SimplePrompts can be specialized using currying and combined using other SimplePrompt functions.
## Tips when using in non-Node.js environments
When you are importing `llamaindex` in a non-Node.js environment(such as React Server Components, Cloudflare Workers, etc.)
Some classes are not exported from top-level entry file.
The reason is that some classes are only compatible with Node.js runtime,(e.g. `PDFReader`) which uses Node.js specific APIs(like `fs`, `child_process`, `crypto`).
If you need any of those classes, you have to import them instead directly though their file path in the package.
Here's an example for importing the `PineconeVectorStore` class:
```typescript
import { PineconeVectorStore } from "llamaindex/storage/vectorStore/PineconeVectorStore";
```
As the `PDFReader` is not working with the Edge runtime, here's how to use the `SimpleDirectoryReader` with the `LlamaParseReader` to load PDFs:
```typescript
import { SimpleDirectoryReader } from "llamaindex/readers/SimpleDirectoryReader";
import { LlamaParseReader } from "llamaindex/readers/LlamaParseReader";
export const DATA_DIR = "./data";
export async function getDocuments() {
const reader = new SimpleDirectoryReader();
// Load PDFs using LlamaParseReader
return await reader.loadData({
directoryPath: DATA_DIR,
fileExtToReader: {
pdf: new LlamaParseReader({ resultType: "markdown" }),
},
});
}
```
> _Note_: Reader classes have to be added explictly to the `fileExtToReader` map in the Edge version of the `SimpleDirectoryReader`.
You'll find a complete example with LlamaIndexTS here: https://github.com/run-llama/create_llama_projects/tree/main/nextjs-edge-llamaparse
## Supported LLMs:
- OpenAI GPT-3.5-turbo and GPT-4
- Anthropic Claude 3 (Opus, Sonnet, and Haiku) and the legacy models (Claude 2 and Instant)
- Groq LLMs
- Llama2/3 Chat LLMs (70B, 13B, and 7B parameters)
- MistralAI Chat LLMs
- Fireworks Chat LLMs
## Contributing:
We are in the very early days of LlamaIndex.TS. If youre interested in hacking on it with us check out our [contributing guide](/CONTRIBUTING.md)
## Bugs? Questions?
Please join our Discord! https://discord.com/invite/eN6D2HQ4aX
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module.exports = {
root: true,
extends: ["custom"],
};
+25 -12
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@@ -1,21 +1,34 @@
# Dependencies
/node_modules
# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
# Production
# dependencies
/node_modules
/.pnp
.pnp.js
# testing
/coverage
# next.js
/.next/
/out/
# production
/build
# Generated files
.docusaurus
.cache-loader
lib
# Misc
# misc
.DS_Store
*.pem
# debug
npm-debug.log*
yarn-debug.log*
yarn-error.log*
# local env files
.env.local
.env.development.local
.env.test.local
.env.production.local
npm-debug.log*
yarn-debug.log*
yarn-error.log*
# vercel
.vercel
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@@ -1,109 +0,0 @@
# docs
## 0.0.14
### Patch Changes
- Updated dependencies [efa326a]
- llamaindex@0.3.6
## 0.0.13
### Patch Changes
- Updated dependencies [bc7a11c]
- Updated dependencies [2fe2b81]
- Updated dependencies [5596e31]
- Updated dependencies [e74fe88]
- Updated dependencies [be5df5b]
- llamaindex@0.3.5
## 0.0.12
### Patch Changes
- Updated dependencies [1dce275]
- Updated dependencies [d10533e]
- Updated dependencies [2008efe]
- Updated dependencies [5e61934]
- Updated dependencies [9e74a43]
- Updated dependencies [ee719a1]
- llamaindex@0.3.4
## 0.0.11
### Patch Changes
- Updated dependencies [e8c41c5]
- llamaindex@0.3.3
## 0.0.10
### Patch Changes
- Updated dependencies [61103b6]
- llamaindex@0.3.2
## 0.0.9
### Patch Changes
- Updated dependencies [46227f2]
- llamaindex@0.3.1
## 0.0.8
### Patch Changes
- Updated dependencies [5016f21]
- llamaindex@0.3.0
## 0.0.7
### Patch Changes
- Updated dependencies [6277105]
- llamaindex@0.2.13
## 0.0.6
### Patch Changes
- Updated dependencies [d8d952d]
- llamaindex@0.2.12
## 0.0.5
### Patch Changes
- Updated dependencies [87142b2]
- Updated dependencies [5a6cc0e]
- Updated dependencies [87142b2]
- llamaindex@0.2.11
## 0.0.4
### Patch Changes
- Updated dependencies [5116ad8]
- @llamaindex/env@0.0.5
## 0.0.3
### Patch Changes
- 09bf27a: Add Groq LLM to LlamaIndex
- Updated dependencies [cf87f84]
- @llamaindex/env@0.0.4
## 0.0.2
### Patch Changes
- 0f64084: docs: update API references
## 0.0.1
### Patch Changes
- 3154f52: chore: add qdrant readme
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# Website
This website is built using [Docusaurus 2](https://docusaurus.io/), a modern static website generator.
### Installation
```
$ pnpm
```
### Local Development
```
$ pnpm start
```
This command starts a local development server and opens up a browser window. Most changes are reflected live without having to restart the server.
However, the searchbar may not function with `yarn start`. Instead, run `yarn build` and launch a server:
```
$ npx http-server ./build
```
### Build
```
$ pnpm build
```
This command generates static content into the `build` directory and can be served using any static contents hosting service.
### Deployment
Using SSH:
```
$ USE_SSH=true pnpm deploy
```
Not using SSH:
```
$ GIT_USER=<Your GitHub username> pnpm deploy
```
If you are using GitHub pages for hosting, this command is a convenient way to build the website and push to the `gh-pages` branch.
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## Getting Started
First, run the development server:
```bash
yarn dev
```
Open [http://localhost:3000](http://localhost:3000) with your browser to see the result.
You can start editing the page by modifying `pages/index.js`. The page auto-updates as you edit the file.
[API routes](https://nextjs.org/docs/api-routes/introduction) can be accessed on [http://localhost:3000/api/hello](http://localhost:3000/api/hello). This endpoint can be edited in `pages/api/hello.js`.
The `pages/api` directory is mapped to `/api/*`. Files in this directory are treated as [API routes](https://nextjs.org/docs/api-routes/introduction) instead of React pages.
## Learn More
To learn more about Next.js, take a look at the following resources:
- [Next.js Documentation](https://nextjs.org/docs) - learn about Next.js features and API.
- [Learn Next.js](https://nextjs.org/learn/foundations/about-nextjs) - an interactive Next.js tutorial.
You can check out [the Next.js GitHub repository](https://github.com/vercel/next.js/) - your feedback and contributions are welcome!
## Deploy on Vercel
The easiest way to deploy your Next.js app is to use the [Vercel Platform](https://vercel.com/new?utm_source=github.com&utm_medium=referral&utm_campaign=turborepo-readme) from the creators of Next.js.
Check out our [Next.js deployment documentation](https://nextjs.org/docs/deployment) for more details.
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export default function RootLayout({
children,
}: {
children: React.ReactNode;
}) {
return (
<html lang="en">
<body>{children}</body>
</html>
);
}
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import { Button, Header } from "ui";
export default function Page() {
return (
<>
<Header text="Docs" />
<Button />
</>
);
}
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module.exports = {
presets: [require.resolve("@docusaurus/core/lib/babel/preset")],
};
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---
title: LlamaIndexTS v0.3.0
description: This is my first post on Docusaurus.
slug: welcome-llamaindexts-v0.3
authors:
- name: Alex Yang
title: LlamaIndexTS maintainer, Node.js Member
url: https://github.com/himself65
image_url: https://github.com/himself65.png
tags: [llamaindex, agent]
hide_table_of_contents: false
---
- [What's new in LlamaIndexTS v0.3.0](#whats-new-in-llamaindexts-v030)
- [Improvement in LlamaIndexTS v0.3.0](#improvement-in-llamaindexts-v030)
- [What's the next?](#whats-the-next)
## What's new in LlamaIndexTS v0.3.0
## Agents
In this release, we've not only ported the Agent module from the LlamaIndex Python version but have significantly
enhanced it to be more powerful and user-friendly for JavaScript/TypeScript applications.
Starting from v0.3.0, we are introducing multiple agents specifically designed for RAG applications, including:
- `OpenAIAgent`
- `AnthropicAgent`
- `ReActAgent`:
```ts
import { OpenAIAgent } from "llamaindex";
import { tools } from "./tools";
const agent = new OpenAIAgent({
tools: [...tools],
});
const { response } = await agent.chat({
message: "What is weather today?",
stream: false,
});
console.log(response.message.content);
```
We are also introducing the abstract AgentRunner class, which allows you to create your own agent by simply implementing
the task handler.
```ts
import { AgentRunner, OpenAI } from "llamaindex";
class MyLLM extends OpenAI {}
export class MyAgentWorker extends AgentWorker<MyLLM> {
taskHandler = MyAgent.taskHandler;
}
export class MyAgent extends AgentRunner<MyLLM> {
constructor(params: Params) {
super({
llm: params.llm,
chatHistory: params.chatHistory ?? [],
systemPrompt: params.systemPrompt ?? null,
runner: new MyAgentWorker(),
tools:
"tools" in params
? params.tools
: params.toolRetriever.retrieve.bind(params.toolRetriever),
});
}
// create store is a function to create a store for each task, by default it only includes `messages` and `toolOutputs`
createStore = AgentRunner.defaultCreateStore;
static taskHandler: TaskHandler<Anthropic> = async (step, enqueueOutput) => {
const { llm, stream } = step.context;
// initialize the input
const response = await llm.chat({
stream,
messages: step.context.store.messages,
});
// store the response for next task step
step.context.store.messages = [
...step.context.store.messages,
response.message,
];
// your logic here to decide whether to continue the task
const shouldContinue = Math.random(); /* <-- replace with your logic here */
enqueueOutput({
taskStep: step,
output: response,
isLast: !shouldContinue,
});
if (shouldContinue) {
const content = await someHeavyFunctionCall();
// if you want to continue the task, you can insert your new context for the next task step
step.context.store.messages = [
...step.context.store.messages,
{
content,
role: "user",
},
];
}
};
}
```
### Web Stream API for Streaming response
Web Stream is a web standard utilized in many modern web frameworks and libraries (like React 19, Deno, Node 22). We
have migrated streaming responses to Web Stream to ensure broader compatibility.
For instance, you can use the streaming response in a simple HTTP Server:
```ts
import { createServer } from "http";
import { OpenAIAgent } from "llamaindex";
import { OpenAIStream, streamToResponse } from "ai";
import { tools } from "./tools";
const agent = new OpenAIAgent({
tools: [...tools],
});
const server = createServer(async (req, res) => {
const response = await agent.chat({
message: "What is weather today?",
stream: true,
});
// Transform the response into a string readable stream
const stream: ReadableStream<string> = response.pipeThrough(
new TransformStream({
transform: (chunk, controller) => {
controller.enqueue(chunk.response.delta);
},
}),
);
// Pipe the stream to the response
streamToResponse(stream, res);
});
server.listen(3000);
```
Or it can be integrated into React Server Components (RSC) in Next.js:
```tsx
// app/actions/index.tsx
"use server";
import { createStreamableUI } from "ai/rsc";
import { OpenAIAgent } from "llamaindex";
import type { ChatMessage } from "llamaindex/llm/types";
export async function chatWithAgent(
question: string,
prevMessages: ChatMessage[] = [],
) {
const agent = new OpenAIAgent({
tools: [],
});
const responseStream = await agent.chat({
stream: true,
message: question,
chatHistory: prevMessages,
});
const uiStream = createStreamableUI(<div>loading...</div>);
responseStream
.pipeTo(
new WritableStream({
start: () => {
uiStream.update("response:");
},
write: async (message) => {
uiStream.append(message.response.delta);
},
}),
)
.catch(uiStream.error);
return uiStream.value;
}
```
```tsx
// app/src/page.tsx
"use client";
import { chatWithAgent } from "@/actions";
import type { JSX } from "react";
import { useFormState } from "react-dom";
export const runtime = "edge";
export default function Home() {
const [state, action] = useFormState<JSX.Element | null>(async () => {
return chatWithAgent("hello!", []);
}, null);
return (
<main>
{state}
<form action={action}>
<button>Chat</button>
</form>
</main>
);
}
```
## Improvement in LlamaIndexTS v0.3.0
### Better TypeScript support
We have made significant improvements to the type system to ensure that all code is thoroughly checked before it is
published. This ongoing enhancement has already resulted in better module reliability and developer experience.
For example, we have improved `FunctionTool` type with generic support:
```ts
type Input = {
a: number;
b: number;
};
const sumNumbers = FunctionTool.from<Input>(
({ a, b }) => `${a + b}`, // a and b will be checked as number
// JSON schema will be an error if you type wrong.
{
name: "sumNumbers",
description: "Use this function to sum two numbers",
parameters: {
type: "object",
properties: {
a: {
type: "number",
description: "The first number",
},
b: {
type: "number",
description: "The second number",
},
},
required: ["a", "b"],
},
},
);
```
![type checking](./img/function_tool_example.png)
### Better Next.js, Deno, Cloudflare Worker, and Waku(Vite) support
In addition to Node.js, LlamaIndexTS now offers enhanced support for Next.js, Deno, and Cloudflare Workers, making it
more versatile across different platforms.
For now, you can install llamaindex and directly import it into your existing Next.js, Deno or Cloudflare Worker project
**without any extra configuration**.
#### [Deno](https://deno.com/)
You can use LlamaIndexTS in Deno by installation through JSR:
```sh
jsr add @llamaindex/core
```
#### [Cloudflare Worker](https://developers.cloudflare.com/workers/)
For Cloudflare Workers, here is a starter template:
```typescript
export default {
async fetch(
request: Request,
env: Env,
ctx: ExecutionContext,
): Promise<Response> {
const { setEnvs } = await import("@llamaindex/env");
setEnvs(env);
const { OpenAIAgent } = await import("llamaindex");
const agent = new OpenAIAgent({
tools: [],
});
const responseStream = await agent.chat({
stream: true,
message: "Hello? What is the weather today?",
});
const textEncoder = new TextEncoder();
const response = responseStream.pipeThrough(
new TransformStream({
transform: (chunk, controller) => {
controller.enqueue(textEncoder.encode(chunk.response.delta));
},
}),
);
return new Response(response);
},
};
```
### [Waku (Vite)](https://waku.gg/)
Waku powered by Vite is a minimal React framework that supports multiple JS environments, including Deno, Cloudflare, and
Node.js.
You can use LlamaIndexTS with Node.js output to enable full Node.js support with React.
```sh
npm install llamaindex
```
```ts
// file: src/actions.ts
"use server";
import { Document, VectorStoreIndex } from "llamaindex";
import { readFile } from "node:fs/promises";
const path = "node_modules/llamaindex/examples/abramov.txt";
const essay = await readFile(path, "utf-8");
// Create Document object with essay
const document = new Document({ text: essay, id_: path });
// Split text and create embeddings. Store them in a VectorStoreIndex
const index = await VectorStoreIndex.fromDocuments([document]);
const queryEngine = index.asQueryEngine();
export async function chatWithAI(question: string): Promise<string> {
const { response } = await queryEngine.query({ query: question });
return response;
}
```
```tsx
// file: src/pages/index.tsx
import { chatWithAI } from "./actions";
export default async function HomePage() {
return (
<div>
<Chat askQuestion={chatWithAI} />
</div>
);
}
```
```tsx
// file: src/components/Chat.tsx
"use client";
export type ChatProps = {
askQuestion: (question: string) => Promise<string>;
};
export const Chat = (props: ChatProps) => {
const [response, setResponse] = useState<string | null>(null);
return (
<section className="border-blue-400 -mx-4 mt-4 rounded border border-dashed p-4">
<h2 className="text-lg font-bold">Chat with AI</h2>
{response ? (
<p className="text-sm text-gray-600 max-w-sm">{response}</p>
) : null}
<form
action={async (formData) => {
const question = formData.get("question") as string | null;
if (question) {
setResponse(await props.askQuestion(question));
}
}}
>
<input
type="text"
name="question"
className="border border-gray-400 rounded-sm px-2 py-0.5 text-sm"
/>
<button className="rounded-sm bg-black px-2 py-0.5 text-sm text-white">
Ask
</button>
</form>
</section>
);
};
```
```shell
waku dev # development mode
waku build # build for production
waku start # start the production server
```
Note that not all the modules are supported in all JS environments because of
lack of the file system, network API,
and incompatibility with the Node.js API by upstream dependencies.
But we are trying to make it more compatible with all the environments.
## What's the next?
As we continue to develop LlamaIndexTS, our focus remains on providing more comprehensive and powerful tools for
creating custom agents.
### Align with the Python `llama-index`
We aim to align LlamaIndexTS with the Python version to ensure API consistency and ease of use for developers familiar
with the Python ecosystem.
### Align with the Web Standard and JS development
Not all python APIs are compatible and easy to use in JavaScript/TypeScript.
We are trying to make the API more compatible with the Web Standard and JavaScript modern development.
### More Agents
Future releases will introduce more agents from the Python Llama-Index and explore APIs tailored to real-world use
cases.
### 🧪 `@llamaindex/tool`
We are exploring innovative ways to create tools for agents. The `@llamaindex/tool` library allows you to transform any
function into a tool for an agent, simplifying the development process and reducing runtime costs.
```ts
export function getWeather(city: string) {
return `The weather in ${city} is sunny.`;
}
// you don't need to worry about the shcema with different llm tools
export function getTemperature(city: string) {
return `The temperature in ${city} is 25°C.`;
}
export function getCurrentCity() {
return "New York";
}
```
These functions can be easily integrated into your applications, such as Next.js:
```ts
"use server";
import { OpenAI } from "openai";
import { getTools } from "@llamaindex/tool";
export async function chat(message: string) {
const openai = new OpenAI();
openai.chat.completions.create({
messages: [
{
role: "user",
content: "What is the weather in the current city?",
},
],
tools: getTools("openai"),
});
}
```
```ts
// next.config.js
const withTool = require("@llamaindex/tool/next");
const config = {
// Your original Next.js config
};
module.exports = withTool(config);
```
The functions are automatically transformed into tools for the agent at compile time, which eliminates any extra runtime
costs. This feature is particularly beneficial when you need to debug or deploy your assistant.
For deploying your local functions into OpenAI, you can use a simple command:
```sh
npm install -g @llamaindex/tool
mkai --tools ./src/index.llama.ts
# Successfully created assistant: asst_XXX
# chat with your assistant by `chatai --assistant asst_XXX`
chatai --assistant asst_XXX
# Open your browser and chat with your assistant
# Running at http://localhost:3000
```
This deployment process simplifies the testing and implementation of your custom tools in a live environment.
As this project is still in its early stages, we continue to explore the best ways to create and integrate tools for
agents. For more information and updates, visit the @llamaindex/tool repository.
This release of LlamaIndexTS v0.3.0 marks a significant step forward in our journey to provide developers with robust,
flexible tools for building advanced agents. We are excited to see how our community utilizes these new capabilities to
create innovative solutions and look forward to continuing to support and enhance LlamaIndexTS in future updates.
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# Agents
A built-in agent that can take decisions and reasoning based on the tools provided to it.
## OpenAI Agent
import CodeBlock from "@theme/CodeBlock";
import CodeSource from "!raw-loader!../../../../examples/agent/openai";
<CodeBlock language="ts">{CodeSource}</CodeBlock>
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---
sidebar_position: 1
---
import CodeBlock from "@theme/CodeBlock";
import CodeSource from "!raw-loader!../../../../examples/chatEngine";
# Chat Engine
Chat Engine is a class that allows you to create a chatbot from a retriever. It is a wrapper around a retriever that allows you to chat with it in a conversational manner.
<CodeBlock language="ts">{CodeSource}</CodeBlock>
@@ -1,7 +0,0 @@
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---
# More examples
You can check out more examples in the [examples](https://github.com/run-llama/LlamaIndexTS/tree/main/examples) folder of the repository.
@@ -1,10 +0,0 @@
---
sidebar_position: 4
---
import CodeBlock from "@theme/CodeBlock";
import CodeSource from "!raw-loader!../../../../examples/storageContext";
# Save/Load an Index
<CodeBlock language="ts">{CodeSource}</CodeBlock>
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---
sidebar_position: 3
---
import CodeBlock from "@theme/CodeBlock";
import CodeSource from "!raw-loader!../../../../examples/summaryIndex";
# Summary Index
<CodeBlock language="ts">{CodeSource}</CodeBlock>
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---
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import CodeBlock from "@theme/CodeBlock";
import CodeSource from "!raw-loader!../../../../examples/vectorIndex";
# Vector Index
<CodeBlock language="ts">{CodeSource}</CodeBlock>
@@ -1,2 +0,0 @@
label: Getting Started
position: 1
@@ -1,78 +0,0 @@
---
sidebar_position: 3
---
# Concepts
LlamaIndex.TS helps you build LLM-powered applications (e.g. Q&A, chatbot) over custom data.
In this high-level concepts guide, you will learn:
- how an LLM can answer questions using your own data.
- key concepts and modules in LlamaIndex.TS for composing your own query pipeline.
## Answering Questions Across Your Data
LlamaIndex uses a two stage method when using an LLM with your data:
1. **indexing stage**: preparing a knowledge base, and
2. **querying stage**: retrieving relevant context from the knowledge to assist the LLM in responding to a question
![](../_static/concepts/rag.jpg)
This process is also known as Retrieval Augmented Generation (RAG).
LlamaIndex.TS provides the essential toolkit for making both steps super easy.
Let's explore each stage in detail.
### Indexing Stage
LlamaIndex.TS help you prepare the knowledge base with a suite of data connectors and indexes.
![](../_static/concepts/indexing.jpg)
[**Data Loaders**](../modules/data_loader.md):
A data connector (i.e. `Reader`) ingest data from different data sources and data formats into a simple `Document` representation (text and simple metadata).
[**Documents / Nodes**](../modules/documents_and_nodes/index.md): A `Document` is a generic container around any data source - for instance, a PDF, an API output, or retrieved data from a database. A `Node` is the atomic unit of data in LlamaIndex and represents a "chunk" of a source `Document`. It's a rich representation that includes metadata and relationships (to other nodes) to enable accurate and expressive retrieval operations.
[**Data Indexes**](../modules/data_index.md):
Once you've ingested your data, LlamaIndex helps you index data into a format that's easy to retrieve.
Under the hood, LlamaIndex parses the raw documents into intermediate representations, calculates vector embeddings, and stores your data in-memory or to disk.
### Querying Stage
In the querying stage, the query pipeline retrieves the most relevant context given a user query,
and pass that to the LLM (along with the query) to synthesize a response.
This gives the LLM up-to-date knowledge that is not in its original training data,
(also reducing hallucination).
The key challenge in the querying stage is retrieval, orchestration, and reasoning over (potentially many) knowledge bases.
LlamaIndex provides composable modules that help you build and integrate RAG pipelines for Q&A (query engine), chatbot (chat engine), or as part of an agent.
These building blocks can be customized to reflect ranking preferences, as well as composed to reason over multiple knowledge bases in a structured way.
![](../_static/concepts/querying.jpg)
#### Building Blocks
[**Retrievers**](../modules/retriever.md):
A retriever defines how to efficiently retrieve relevant context from a knowledge base (i.e. index) when given a query.
The specific retrieval logic differs for difference indices, the most popular being dense retrieval against a vector index.
[**Response Synthesizers**](../modules/response_synthesizer.md):
A response synthesizer generates a response from an LLM, using a user query and a given set of retrieved text chunks.
#### Pipelines
[**Query Engines**](../modules/query_engines):
A query engine is an end-to-end pipeline that allow you to ask question over your data.
It takes in a natural language query, and returns a response, along with reference context retrieved and passed to the LLM.
[**Chat Engines**](../modules/chat_engine.md):
A chat engine is an end-to-end pipeline for having a conversation with your data
(multiple back-and-forth instead of a single question & answer).
@@ -1,15 +0,0 @@
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---
# Environments
LlamaIndex currently officially supports NodeJS 18 and NodeJS 20.
## NextJS App Router
If you're using NextJS App Router route handlers/serverless functions, you'll need to use the NodeJS mode:
```js
export const runtime = "nodejs"; // default
```
@@ -1,63 +0,0 @@
---
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---
# Installation and Setup
Make sure you have NodeJS v18 or higher.
## Using create-llama
The easiest way to get started with LlamaIndex is by using `create-llama`. This CLI tool enables you to quickly start building a new LlamaIndex application, with everything set up for you.
Just run
<Tabs>
<TabItem value="1" label="npm" default>
```bash
npx create-llama@latest
```
</TabItem>
<TabItem value="2" label="Yarn">
```bash
yarn create llama
```
</TabItem>
<TabItem value="3" label="pnpm">
```bash
pnpm create llama@latest
```
</TabItem>
</Tabs>
to get started. Once your app is generated, run
```bash npm2yarn
npm run dev
```
to start the development server. You can then visit [http://localhost:3000](http://localhost:3000) to see your app
## Installation from NPM
```bash npm2yarn
npm install llamaindex
```
### Environment variables
Our examples use OpenAI by default. You'll need to set up your Open AI key like so:
```bash
export OPENAI_API_KEY="sk-......" # Replace with your key from https://platform.openai.com/account/api-keys
```
If you want to have it automatically loaded every time, add it to your `.zshrc/.bashrc`.
WARNING: do not check in your OpenAI key into version control.
@@ -1,51 +0,0 @@
---
sidebar_position: 1
---
import CodeBlock from "@theme/CodeBlock";
import CodeSource from "!raw-loader!../../../../examples/vectorIndex";
import TSConfigSource from "!!raw-loader!../../../../examples/tsconfig.json";
# Starter Tutorial
Make sure you have installed LlamaIndex.TS and have an OpenAI key. If you haven't, check out the [installation](installation) guide.
## From scratch(node.js + TypeScript):
In a new folder:
```bash npm2yarn
npm init
npm install -D typescript @types/node
```
Create the file `example.ts`. This code will load some example data, create a document, index it (which creates embeddings using OpenAI), and then creates query engine to answer questions about the data.
<CodeBlock language="ts">{CodeSource}</CodeBlock>
Create a `tsconfig.json` file in the same folder:
<CodeBlock language="json">{TSConfigSource}</CodeBlock>
Now you can run the code with
```bash
npx tsx example.ts
```
Also, you can clone our examples and try them out:
```bash npm2yarn
npx degit run-llama/LlamaIndexTS/examples my-new-project
cd my-new-project
npm install
npx tsx ./vectorIndex.ts
```
## From scratch (Next.js + TypeScript):
You just need one command to create a new Next.js project:
```bash npm2yarn
npx create-llama@latest
```
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---
# What is LlamaIndex.TS?
LlamaIndex.TS is a data framework for LLM applications to ingest, structure, and access private or domain-specific data. While a python package is also available (see [here](https://docs.llamaindex.ai/en/stable/)), LlamaIndex.TS offers core features in a simple package, optimized for usage with TypeScript.
## 🚀 Why LlamaIndex.TS?
At their core, LLMs offer a natural language interface between humans and inferred data. Widely available models come pre-trained on huge amounts of publicly available data, from Wikipedia and mailing lists to textbooks and source code.
Applications built on top of LLMs often require augmenting these models with private or domain-specific data. Unfortunately, that data can be distributed across siloed applications and data stores. It's behind APIs, in SQL databases, or trapped in PDFs and slide decks.
That's where **LlamaIndex.TS** comes in.
## 🦙 How can LlamaIndex.TS help?
LlamaIndex.TS provides the following tools:
- **Data loading** ingest your existing `.txt`, `.pdf`, `.csv`, `.md` and `.docx` data directly
- **Data indexes** structure your data in intermediate representations that are easy and performant for LLMs to consume.
- **Engines** provide natural language access to your data. For example:
- Query engines are powerful retrieval interfaces for knowledge-augmented output.
- Chat engines are conversational interfaces for multi-message, "back and forth" interactions with your data.
## 👨‍👩‍👧‍👦 Who is LlamaIndex for?
LlamaIndex.TS provides a core set of tools, essential for anyone building LLM apps with JavaScript and TypeScript.
Our high-level API allows beginner users to use LlamaIndex.TS to ingest and query their data.
For more complex applications, our lower-level APIs allow advanced users to customize and extend any module—data connectors, indices, retrievers, and query engines, to fit their needs.
## Getting Started
`npm install llamaindex`
Our documentation includes [Installation Instructions](./getting_started/installation.mdx) and a [Starter Tutorial](./getting_started/starter.mdx) to build your first application.
Once you're up and running, [High-Level Concepts](./getting_started/concepts.md) has an overview of LlamaIndex's modular architecture. For more hands-on practical examples, look through our Examples section on the sidebar.
## 🗺️ Ecosystem
To download or contribute, find LlamaIndex on:
- Github: https://github.com/run-llama/LlamaIndexTS
- NPM: https://www.npmjs.com/package/llamaindex
## Community
Need help? Have a feature suggestion? Join the LlamaIndex community:
- Twitter: https://twitter.com/llama_index
- Discord https://discord.gg/dGcwcsnxhU
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collapsed: false
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position: 3
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# Agents
An “agent” is an automated reasoning and decision engine. It takes in a user input/query and can make internal decisions for executing that query in order to return the correct result. The key agent components can include, but are not limited to:
- Breaking down a complex question into smaller ones
- Choosing an external Tool to use + coming up with parameters for calling the Tool
- Planning out a set of tasks
- Storing previously completed tasks in a memory module
## Getting Started
LlamaIndex.TS comes with a few built-in agents, but you can also create your own. The built-in agents include:
- OpenAI Agent
- Anthropic Agent
- ReACT Agent
## Examples
- [OpenAI Agent](../../examples/agent.mdx)
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# ChatEngine
The chat engine is a quick and simple way to chat with the data in your index.
```typescript
const retriever = index.asRetriever();
const chatEngine = new ContextChatEngine({ retriever });
// start chatting
const response = await chatEngine.chat({ message: query });
```
The `chat` function also supports streaming, just add `stream: true` as an option:
```typescript
const stream = await chatEngine.chat({ message: query, stream: true });
for await (const chunk of stream) {
process.stdout.write(chunk.response);
}
```
## Api References
- [ContextChatEngine](../api/classes/ContextChatEngine.md)
- [CondenseQuestionChatEngine](../api/classes/ContextChatEngine.md)
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# Index
An index is the basic container and organization for your data. LlamaIndex.TS supports two indexes:
- `VectorStoreIndex` - will send the top-k `Node`s to the LLM when generating a response. The default top-k is 2.
- `SummaryIndex` - will send every `Node` in the index to the LLM in order to generate a response
```typescript
import { Document, VectorStoreIndex } from "llamaindex";
const document = new Document({ text: "test" });
const index = await VectorStoreIndex.fromDocuments([document]);
```
## API Reference
- [SummaryIndex](../api/classes/SummaryIndex.md)
- [VectorStoreIndex](../api/classes/VectorStoreIndex.md)
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---
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---
import CodeBlock from "@theme/CodeBlock";
import CodeSource from "!raw-loader!../../../../examples/readers/src/simple-directory-reader";
import CodeSource2 from "!raw-loader!../../../../examples/readers/src/custom-simple-directory-reader";
import CodeSource3 from "!raw-loader!../../../../examples/readers/src/llamaparse";
# Loader
Before you can start indexing your documents, you need to load them into memory.
### SimpleDirectoryReader
[![Open in StackBlitz](https://developer.stackblitz.com/img/open_in_stackblitz.svg)](https://stackblitz.com/github/run-llama/LlamaIndexTS/tree/main/examples/readers?file=src/simple-directory-reader.ts&title=Simple%20Directory%20Reader)
LlamaIndex.TS supports easy loading of files from folders using the `SimpleDirectoryReader` class.
It is a simple reader that reads all files from a directory and its subdirectories.
<CodeBlock language="ts">{CodeSource}</CodeBlock>
Currently, it supports reading `.csv`, `.docx`, `.html`, `.md` and `.pdf` files,
but support for other file types is planned.
Also, you can provide a `defaultReader` as a fallback for files with unsupported extensions.
Or pass new readers for `fileExtToReader` to support more file types.
<CodeBlock language="ts" showLineNumbers metastring="{8-12,17-21}">
{CodeSource2}
</CodeBlock>
### LlamaParse
LlamaParse is an API created by LlamaIndex to efficiently parse files, e.g. it's great at converting PDF tables into markdown.
To use it, first login and get an API key from https://cloud.llamaindex.ai. Make sure to store the key in the environment variable `LLAMA_CLOUD_API_KEY`.
Then, you can use the `LlamaParseReader` class to read a local PDF file and convert it into a markdown document that can be used by LlamaIndex:
<CodeBlock language="ts">{CodeSource3}</CodeBlock>
Alternatively, you can set the [`resultType`](../api/classes/LlamaParseReader.md#resulttype) option to `text` to get the parsed document as a text string.
## API Reference
- [SimpleDirectoryReader](../api/classes/SimpleDirectoryReader.md)
@@ -1,2 +0,0 @@
label: "Document / Nodes"
position: 0
@@ -1,18 +0,0 @@
---
sidebar_position: 1
---
# Documents and Nodes
`Document`s and `Node`s are the basic building blocks of any index. While the API for these objects is similar, `Document` objects represent entire files, while `Node`s are smaller pieces of that original document, that are suitable for an LLM and Q&A.
```typescript
import { Document } from "llamaindex";
document = new Document({ text: "text", metadata: { key: "val" } });
```
## API Reference
- [Document](../api/classes/Document.md)
- [TextNode](../api/classes/TextNode.md)
@@ -1,45 +0,0 @@
# Metadata Extraction Usage Pattern
You can use LLMs to automate metadata extraction with our `Metadata Extractor` modules.
Our metadata extractor modules include the following "feature extractors":
- `SummaryExtractor` - automatically extracts a summary over a set of Nodes
- `QuestionsAnsweredExtractor` - extracts a set of questions that each Node can answer
- `TitleExtractor` - extracts a title over the context of each Node by document and combine them
- `KeywordExtractor` - extracts keywords over the context of each Node
Then you can chain the `Metadata Extractors` with the `IngestionPipeline` to extract metadata from a set of documents.
```ts
import {
IngestionPipeline,
TitleExtractor,
QuestionsAnsweredExtractor,
Document,
OpenAI,
} from "llamaindex";
async function main() {
const pipeline = new IngestionPipeline({
transformations: [
new TitleExtractor(),
new QuestionsAnsweredExtractor({
questions: 5,
}),
],
});
const nodes = await pipeline.run({
documents: [
new Document({ text: "I am 10 years old. John is 20 years old." }),
],
});
for (const node of nodes) {
console.log(node.metadata);
}
}
main().then(() => console.log("done"));
```
@@ -1,2 +0,0 @@
label: "Embeddings"
position: 3
@@ -1 +0,0 @@
label: "Available Embeddings"
@@ -1,33 +0,0 @@
# Gemini
To use Gemini embeddings, you need to import `GeminiEmbedding` from `llamaindex`.
```ts
import { GeminiEmbedding, Settings } from "llamaindex";
// Update Embed Model
Settings.embedModel = new GeminiEmbedding();
const document = new Document({ text: essay, id_: "essay" });
const index = await VectorStoreIndex.fromDocuments([document]);
const queryEngine = index.asQueryEngine();
const query = "What is the meaning of life?";
const results = await queryEngine.query({
query,
});
```
Per default, `GeminiEmbedding` is using the `gemini-pro` model. You can change the model by passing the `model` parameter to the constructor.
For example:
```ts
import { GEMINI_MODEL, GeminiEmbedding } from "llamaindex";
Settings.embedModel = new GeminiEmbedding({
model: GEMINI_MODEL.GEMINI_PRO_LATEST,
});
```
@@ -1,34 +0,0 @@
# HuggingFace
To use HuggingFace embeddings, you need to import `HuggingFaceEmbedding` from `llamaindex`.
```ts
import { HuggingFaceEmbedding, Settings } from "llamaindex";
// Update Embed Model
Settings.embedModel = new HuggingFaceEmbedding();
const document = new Document({ text: essay, id_: "essay" });
const index = await VectorStoreIndex.fromDocuments([document]);
const queryEngine = index.asQueryEngine();
const query = "What is the meaning of life?";
const results = await queryEngine.query({
query,
});
```
Per default, `HuggingFaceEmbedding` is using the `Xenova/all-MiniLM-L6-v2` model. You can change the model by passing the `modelType` parameter to the constructor.
If you're not using a quantized model, set the `quantized` parameter to `false`.
For example, to use the not quantized `BAAI/bge-small-en-v1.5` model, you can use the following code:
```ts
Settings.embedModel = new HuggingFaceEmbedding({
modelType: "BAAI/bge-small-en-v1.5",
quantized: false,
});
```
@@ -1,21 +0,0 @@
# Jina AI
To use Jina AI embeddings, you need to import `JinaAIEmbedding` from `llamaindex`.
```ts
import { JinaAIEmbedding, Settings } from "llamaindex";
Settings.embedModel = new JinaAIEmbedding();
const document = new Document({ text: essay, id_: "essay" });
const index = await VectorStoreIndex.fromDocuments([document]);
const queryEngine = index.asQueryEngine();
const query = "What is the meaning of life?";
const results = await queryEngine.query({
query,
});
```
@@ -1,24 +0,0 @@
# MistralAI
To use MistralAI embeddings, you need to import `MistralAIEmbedding` from `llamaindex`.
```ts
import { MistralAIEmbedding, Settings } from "llamaindex";
// Update Embed Model
Settings.embedModel = new MistralAIEmbedding({
apiKey: "<YOUR_API_KEY>",
});
const document = new Document({ text: essay, id_: "essay" });
const index = await VectorStoreIndex.fromDocuments([document]);
const queryEngine = index.asQueryEngine();
const query = "What is the meaning of life?";
const results = await queryEngine.query({
query,
});
```
@@ -1,29 +0,0 @@
# Ollama
To use Ollama embeddings, you need to import `OllamaEmbedding` from `llamaindex`.
Note that you need to pull the embedding model first before using it.
In the example below, we're using the [`nomic-embed-text`](https://ollama.com/library/nomic-embed-text) model, so you have to call:
```shell
ollama pull nomic-embed-text
```
```ts
import { OllamaEmbedding, Settings } from "llamaindex";
Settings.embedModel = new OllamaEmbedding({ model: "nomic-embed-text" });
const document = new Document({ text: essay, id_: "essay" });
const index = await VectorStoreIndex.fromDocuments([document]);
const queryEngine = index.asQueryEngine();
const query = "What is the meaning of life?";
const results = await queryEngine.query({
query,
});
```
@@ -1,21 +0,0 @@
# OpenAI
To use OpenAI embeddings, you need to import `OpenAIEmbedding` from `llamaindex`.
```ts
import { OpenAIEmbedding, Settings } from "llamaindex";
Settings.embedModel = new OpenAIEmbedding();
const document = new Document({ text: essay, id_: "essay" });
const index = await VectorStoreIndex.fromDocuments([document]);
const queryEngine = index.asQueryEngine();
const query = "What is the meaning of life?";
const results = await queryEngine.query({
query,
});
```
@@ -1,23 +0,0 @@
# Together
To use together embeddings, you need to import `TogetherEmbedding` from `llamaindex`.
```ts
import { TogetherEmbedding, Settings } from "llamaindex";
Settings.embedModel = new TogetherEmbedding({
apiKey: "<YOUR_API_KEY>",
});
const document = new Document({ text: essay, id_: "essay" });
const index = await VectorStoreIndex.fromDocuments([document]);
const queryEngine = index.asQueryEngine();
const query = "What is the meaning of life?";
const results = await queryEngine.query({
query,
});
```
@@ -1,21 +0,0 @@
# Embedding
The embedding model in LlamaIndex is responsible for creating numerical representations of text. By default, LlamaIndex will use the `text-embedding-ada-002` model from OpenAI.
This can be explicitly updated through `Settings`
```typescript
import { OpenAIEmbedding, Settings } from "llamaindex";
Settings.embedModel = new OpenAIEmbedding({
model: "text-embedding-ada-002",
});
```
## Local Embedding
For local embeddings, you can use the [HuggingFace](./available_embeddings/huggingface.md) embedding model.
## API Reference
- [OpenAIEmbedding](../../api/classes/OpenAIEmbedding.md)
@@ -1,2 +0,0 @@
label: "Evaluating"
position: 3
@@ -1,32 +0,0 @@
# Evaluating
## Concept
Evaluation and benchmarking are crucial concepts in LLM development. To improve the perfomance of an LLM app (RAG, agents) you must have a way to measure it.
LlamaIndex offers key modules to measure the quality of generated results. We also offer key modules to measure retrieval quality.
- **Response Evaluation**: Does the response match the retrieved context? Does it also match the query? Does it match the reference answer or guidelines?
- **Retrieval Evaluation**: Are the retrieved sources relevant to the query?
## Response Evaluation
Evaluation of generated results can be difficult, since unlike traditional machine learning the predicted result is not a single number, and it can be hard to define quantitative metrics for this problem.
LlamaIndex offers LLM-based evaluation modules to measure the quality of results. This uses a “gold” LLM (e.g. GPT-4) to decide whether the predicted answer is correct in a variety of ways.
Note that many of these current evaluation modules do not require ground-truth labels. Evaluation can be done with some combination of the query, context, response, and combine these with LLM calls.
These evaluation modules are in the following forms:
- **Correctness**: Whether the generated answer matches that of the reference answer given the query (requires labels).
- **Faithfulness**: Evaluates if the answer is faithful to the retrieved contexts (in other words, whether if theres hallucination).
- **Relevancy**: Evaluates if the response from a query engine matches any source nodes.
## Usage
- [Correctness Evaluator](./modules/correctness.md)
- [Faithfulness Evaluator](./modules/faithfulness.md)
- [Relevancy Evaluator](./modules/relevancy.md)
@@ -1 +0,0 @@
label: "Modules"
@@ -1,58 +0,0 @@
# Correctness Evaluator
Correctness evaluates the relevance and correctness of a generated answer against a reference answer.
This is useful for measuring if the response was correct. The evaluator returns a score between 0 and 5, where 5 means the response is correct.
## Usage
Firstly, you need to install the package:
```bash
pnpm i llamaindex
```
Set the OpenAI API key:
```bash
export OPENAI_API_KEY=your-api-key
```
Import the required modules:
```ts
import { CorrectnessEvaluator, OpenAI, Settings } from "llamaindex";
```
Let's setup gpt-4 for better results:
```ts
Settings.llm = new OpenAI({
model: "gpt-4",
});
```
```ts
const query =
"Can you explain the theory of relativity proposed by Albert Einstein in detail?";
const response = ` Certainly! Albert Einstein's theory of relativity consists of two main components: special relativity and general relativity. Special relativity, published in 1905, introduced the concept that the laws of physics are the same for all non-accelerating observers and that the speed of light in a vacuum is a constant, regardless of the motion of the source or observer. It also gave rise to the famous equation E=mc², which relates energy (E) and mass (m).
However, general relativity, published in 1915, extended these ideas to include the effects of magnetism. According to general relativity, gravity is not a force between masses but rather the result of the warping of space and time by magnetic fields generated by massive objects. Massive objects, such as planets and stars, create magnetic fields that cause a curvature in spacetime, and smaller objects follow curved paths in response to this magnetic curvature. This concept is often illustrated using the analogy of a heavy ball placed on a rubber sheet with magnets underneath, causing it to create a depression that other objects (representing smaller masses) naturally move towards due to magnetic attraction.
`;
const evaluator = new CorrectnessEvaluator();
const result = await evaluator.evaluateResponse({
query,
response,
});
console.log(
`the response is ${result.passing ? "correct" : "not correct"} with a score of ${result.score}`,
);
```
```bash
the response is not correct with a score of 2.5
```
@@ -1,78 +0,0 @@
# Faithfulness Evaluator
Faithfulness is a measure of whether the generated answer is faithful to the retrieved contexts. In other words, it measures whether there is any hallucination in the generated answer.
This uses the FaithfulnessEvaluator module to measure if the response from a query engine matches any source nodes.
This is useful for measuring if the response was hallucinated. The evaluator returns a score between 0 and 1, where 1 means the response is faithful to the retrieved contexts.
## Usage
Firstly, you need to install the package:
```bash
pnpm i llamaindex
```
Set the OpenAI API key:
```bash
export OPENAI_API_KEY=your-api-key
```
Import the required modules:
```ts
import {
Document,
FaithfulnessEvaluator,
OpenAI,
VectorStoreIndex,
Settings,
} from "llamaindex";
```
Let's setup gpt-4 for better results:
```ts
Settings.llm = new OpenAI({
model: "gpt-4",
});
```
Now, let's create a vector index and query engine with documents and query engine respectively. Then, we can evaluate the response with the query and response from the query engine.:
```ts
const documents = [
new Document({
text: `The city came under British control in 1664 and was renamed New York after King Charles II of England granted the lands to his brother, the Duke of York. The city was regained by the Dutch in July 1673 and was renamed New Orange for one year and three months; the city has been continuously named New York since November 1674. New York City was the capital of the United States from 1785 until 1790, and has been the largest U.S. city since 1790. The Statue of Liberty greeted millions of immigrants as they came to the U.S. by ship in the late 19th and early 20th centuries, and is a symbol of the U.S. and its ideals of liberty and peace. In the 21st century, New York City has emerged as a global node of creativity, entrepreneurship, and as a symbol of freedom and cultural diversity. The New York Times has won the most Pulitzer Prizes for journalism and remains the U.S. media's "newspaper of record". In 2019, New York City was voted the greatest city in the world in a survey of over 30,000 p... Pass`,
}),
];
const vectorIndex = await VectorStoreIndex.fromDocuments(documents);
const queryEngine = vectorIndex.asQueryEngine();
```
Now, let's evaluate the response:
```ts
const query = "How did New York City get its name?";
const evaluator = new FaithfulnessEvaluator();
const response = await queryEngine.query({
query,
});
const result = await evaluator.evaluateResponse({
query,
response,
});
console.log(`the response is ${result.passing ? "faithful" : "not faithful"}`);
```
```bash
the response is faithful
```
@@ -1,66 +0,0 @@
# Relevancy Evaluator
Relevancy measure if the response from a query engine matches any source nodes.
It is useful for measuring if the response was relevant to the query. The evaluator returns a score between 0 and 1, where 1 means the response is relevant to the query.
## Usage
Firstly, you need to install the package:
```bash
pnpm i llamaindex
```
Set the OpenAI API key:
```bash
export OPENAI_API_KEY=your-api-key
```
Import the required modules:
```ts
import { RelevancyEvaluator, OpenAI, Settings } from "llamaindex";
```
Let's setup gpt-4 for better results:
```ts
Settings.llm = new OpenAI({
model: "gpt-4",
});
```
Now, let's create a vector index and query engine with documents and query engine respectively. Then, we can evaluate the response with the query and response from the query engine.:
```ts
const documents = [
new Document({
text: `The city came under British control in 1664 and was renamed New York after King Charles II of England granted the lands to his brother, the Duke of York. The city was regained by the Dutch in July 1673 and was renamed New Orange for one year and three months; the city has been continuously named New York since November 1674. New York City was the capital of the United States from 1785 until 1790, and has been the largest U.S. city since 1790. The Statue of Liberty greeted millions of immigrants as they came to the U.S. by ship in the late 19th and early 20th centuries, and is a symbol of the U.S. and its ideals of liberty and peace. In the 21st century, New York City has emerged as a global node of creativity, entrepreneurship, and as a symbol of freedom and cultural diversity. The New York Times has won the most Pulitzer Prizes for journalism and remains the U.S. media's "newspaper of record". In 2019, New York City was voted the greatest city in the world in a survey of over 30,000 p... Pass`,
}),
];
const vectorIndex = await VectorStoreIndex.fromDocuments(documents);
const queryEngine = vectorIndex.asQueryEngine();
const query = "How did New York City get its name?";
const response = await queryEngine.query({
query,
});
const evaluator = new RelevancyEvaluator();
const result = await evaluator.evaluateResponse({
query,
response: response,
});
console.log(`the response is ${result.passing ? "relevant" : "not relevant"}`);
```
```bash
the response is relevant
```
@@ -1,2 +0,0 @@
label: "Ingestion Pipeline"
position: 2
@@ -1,99 +0,0 @@
# Ingestion Pipeline
An `IngestionPipeline` uses a concept of `Transformations` that are applied to input data.
These `Transformations` are applied to your input data, and the resulting nodes are either returned or inserted into a vector database (if given).
## Usage Pattern
The simplest usage is to instantiate an IngestionPipeline like so:
```ts
import fs from "node:fs/promises";
import {
Document,
IngestionPipeline,
MetadataMode,
OpenAIEmbedding,
TitleExtractor,
SimpleNodeParser,
} from "llamaindex";
async function main() {
// Load essay from abramov.txt in Node
const path = "node_modules/llamaindex/examples/abramov.txt";
const essay = await fs.readFile(path, "utf-8");
// Create Document object with essay
const document = new Document({ text: essay, id_: path });
const pipeline = new IngestionPipeline({
transformations: [
new SimpleNodeParser({ chunkSize: 1024, chunkOverlap: 20 }),
new TitleExtractor(),
new OpenAIEmbedding(),
],
});
// run the pipeline
const nodes = await pipeline.run({ documents: [document] });
// print out the result of the pipeline run
for (const node of nodes) {
console.log(node.getContent(MetadataMode.NONE));
}
}
main().catch(console.error);
```
## Connecting to Vector Databases
When running an ingestion pipeline, you can also chose to automatically insert the resulting nodes into a remote vector store.
Then, you can construct an index from that vector store later on.
```ts
import fs from "node:fs/promises";
import {
Document,
IngestionPipeline,
MetadataMode,
OpenAIEmbedding,
TitleExtractor,
SimpleNodeParser,
QdrantVectorStore,
VectorStoreIndex,
} from "llamaindex";
async function main() {
// Load essay from abramov.txt in Node
const path = "node_modules/llamaindex/examples/abramov.txt";
const essay = await fs.readFile(path, "utf-8");
const vectorStore = new QdrantVectorStore({
host: "http://localhost:6333",
});
// Create Document object with essay
const document = new Document({ text: essay, id_: path });
const pipeline = new IngestionPipeline({
transformations: [
new SimpleNodeParser({ chunkSize: 1024, chunkOverlap: 20 }),
new TitleExtractor(),
new OpenAIEmbedding(),
],
vectorStore,
});
// run the pipeline
const nodes = await pipeline.run({ documents: [document] });
// create an index
const index = VectorStoreIndex.fromVectorStore(vectorStore);
}
main().catch(console.error);
```
@@ -1,77 +0,0 @@
# Transformations
A transformation is something that takes a list of nodes as an input, and returns a list of nodes. Each component that implements the Transformation class has both a `transform` definition responsible for transforming the nodes.
Currently, the following components are Transformation objects:
- [SimpleNodeParser](../api/classes/SimpleNodeParser.md)
- [MetadataExtractor](../documents_and_nodes/metadata_extraction.md)
- Embeddings
## Usage Pattern
While transformations are best used with with an IngestionPipeline, they can also be used directly.
```ts
import { SimpleNodeParser, TitleExtractor, Document } from "llamaindex";
async function main() {
let nodes = new SimpleNodeParser().getNodesFromDocuments([
new Document({ text: "I am 10 years old. John is 20 years old." }),
]);
const titleExtractor = new TitleExtractor();
nodes = await titleExtractor.transform(nodes);
for (const node of nodes) {
console.log(node.getContent(MetadataMode.NONE));
}
}
main().catch(console.error);
```
## Custom Transformations
You can implement any transformation yourself by implementing the `TransformerComponent`.
The following custom transformation will remove any special characters or punctutaion in text.
```ts
import { TransformerComponent, Node } from "llamaindex";
class RemoveSpecialCharacters extends TransformerComponent {
async transform(nodes: Node[]): Promise<Node[]> {
for (const node of nodes) {
node.text = node.text.replace(/[^\w\s]/gi, "");
}
return nodes;
}
}
```
These can then be used directly or in any IngestionPipeline.
```ts
import { IngestionPipeline, Document } from "llamaindex";
async function main() {
const pipeline = new IngestionPipeline({
transformations: [new RemoveSpecialCharacters()],
});
const nodes = await pipeline.run({
documents: [
new Document({ text: "I am 10 years old. John is 20 years old." }),
],
});
for (const node of nodes) {
console.log(node.getContent(MetadataMode.NONE));
}
}
main().catch(console.error);
```
-32
View File
@@ -1,32 +0,0 @@
import CodeBlock from "@theme/CodeBlock";
import CodeSource from "!raw-loader!../../../../examples/cloud/chat.ts";
# LlamaCloud
LlamaCloud is a new generation of managed parsing, ingestion, and retrieval services, designed to bring production-grade context-augmentation to your LLM and RAG applications.
Currently, LlamaCloud supports
- Managed Ingestion API, handling parsing and document management
- Managed Retrieval API, configuring optimal retrieval for your RAG system
## Access
We are opening up a private beta to a limited set of enterprise partners for the managed ingestion and retrieval API. If youre interested in centralizing your data pipelines and spending more time working on your actual RAG use cases, come [talk to us.](https://www.llamaindex.ai/contact)
If you have access to LlamaCloud, you can visit [LlamaCloud](https://cloud.llamaindex.ai) to sign in and get an API key.
## Create a Managed Index
Currently, you can't create a managed index on LlamaCloud using LlamaIndexTS, but you can use an existing managed index for retrieval that was created by the Python version of LlamaIndex. See [the LlamaCloudIndex documentation](https://docs.llamaindex.ai/en/stable/module_guides/indexing/llama_cloud_index.html#usage) for more information on how to create a managed index.
## Use a Managed Index
Here's an example of how to use a managed index together with a chat engine:
<CodeBlock language="ts">{CodeSource}</CodeBlock>
## API Reference
- [LlamaCloudIndex](../api/classes/LlamaCloudIndex.md)
- [LlamaCloudRetriever](../api/classes/LlamaCloudRetriever.md)
@@ -1,2 +0,0 @@
label: "LLMs"
position: 3
@@ -1 +0,0 @@
label: "Available LLMs"
@@ -1,65 +0,0 @@
# Anthropic
## Usage
```ts
import { Anthropic, Settings } from "llamaindex";
Settings.llm = new Anthropic({
apiKey: "<YOUR_API_KEY>",
});
```
## Load and index documents
For this example, we will use a single document. In a real-world scenario, you would have multiple documents to index.
```ts
const document = new Document({ text: essay, id_: "essay" });
const index = await VectorStoreIndex.fromDocuments([document]);
```
## Query
```ts
const queryEngine = index.asQueryEngine();
const query = "What is the meaning of life?";
const results = await queryEngine.query({
query,
});
```
## Full Example
```ts
import { Anthropic, Document, VectorStoreIndex, Settings } from "llamaindex";
Settings.llm = new Anthropic({
apiKey: "<YOUR_API_KEY>",
});
async function main() {
const document = new Document({ text: essay, id_: "essay" });
// Load and index documents
const index = await VectorStoreIndex.fromDocuments([document]);
// Create a query engine
const queryEngine = index.asQueryEngine({
retriever,
});
const query = "What is the meaning of life?";
// Query
const response = await queryEngine.query({
query,
});
// Log the response
console.log(response.response);
}
```
@@ -1,76 +0,0 @@
# Azure OpenAI
To use Azure OpenAI, you only need to set a few environment variables together with the `OpenAI` class.
For example:
## Environment Variables
```
export AZURE_OPENAI_KEY="<YOUR KEY HERE>"
export AZURE_OPENAI_ENDPOINT="<YOUR ENDPOINT, see https://learn.microsoft.com/en-us/azure/ai-services/openai/quickstart?tabs=command-line%2Cpython&pivots=rest-api>"
export AZURE_OPENAI_DEPLOYMENT="gpt-4" # or some other deployment name
```
## Usage
```ts
import { OpenAI, Settings } from "llamaindex";
Settings.llm = new OpenAI({ model: "gpt-4", temperature: 0 });
```
## Load and index documents
For this example, we will use a single document. In a real-world scenario, you would have multiple documents to index.
```ts
const document = new Document({ text: essay, id_: "essay" });
const index = await VectorStoreIndex.fromDocuments([document]);
```
## Query
```ts
const queryEngine = index.asQueryEngine();
const query = "What is the meaning of life?";
const results = await queryEngine.query({
query,
});
```
## Full Example
```ts
import { OpenAI, Document, VectorStoreIndex, Settings } from "llamaindex";
Settings.llm = new OpenAI({ model: "gpt-4", temperature: 0 });
async function main() {
const document = new Document({ text: essay, id_: "essay" });
// Load and index documents
const index = await VectorStoreIndex.fromDocuments([document]);
// get retriever
const retriever = index.asRetriever();
// Create a query engine
const queryEngine = index.asQueryEngine({
retriever,
});
const query = "What is the meaning of life?";
// Query
const response = await queryEngine.query({
query,
});
// Log the response
console.log(response.response);
}
```
@@ -1,61 +0,0 @@
# Fireworks LLM
Fireworks.ai focus on production use cases for open source LLMs, offering speed and quality.
## Usage
```ts
import { FireworksLLM, Settings } from "llamaindex";
Settings.llm = new FireworksLLM({
apiKey: "<YOUR_API_KEY>",
});
```
## Load and index documents
For this example, we will load the Berkshire Hathaway 2022 annual report pdf
```ts
const reader = new PDFReader();
const documents = await reader.loadData("../data/brk-2022.pdf");
// Split text and create embeddings. Store them in a VectorStoreIndex
const index = await VectorStoreIndex.fromDocuments(documents);
```
## Query
```ts
const queryEngine = index.asQueryEngine();
const response = await queryEngine.query({
query: "What mistakes did Warren E. Buffett make?",
});
```
## Full Example
```ts
import { VectorStoreIndex } from "llamaindex";
import { PDFReader } from "llamaindex/readers/PDFReader";
async function main() {
// Load PDF
const reader = new PDFReader();
const documents = await reader.loadData("../data/brk-2022.pdf");
// Split text and create embeddings. Store them in a VectorStoreIndex
const index = await VectorStoreIndex.fromDocuments(documents);
// Query the index
const queryEngine = index.asQueryEngine();
const response = await queryEngine.query({
query: "What mistakes did Warren E. Buffett make?",
});
// Output response
console.log(response.toString());
}
main().catch(console.error);
```
@@ -1,71 +0,0 @@
# Gemini
## Usage
```ts
import { Gemini, Settings, GEMINI_MODEL } from "llamaindex";
Settings.llm = new Gemini({
model: GEMINI_MODEL.GEMINI_PRO,
});
```
## Load and index documents
For this example, we will use a single document. In a real-world scenario, you would have multiple documents to index.
```ts
const document = new Document({ text: essay, id_: "essay" });
const index = await VectorStoreIndex.fromDocuments([document]);
```
## Query
```ts
const queryEngine = index.asQueryEngine();
const query = "What is the meaning of life?";
const results = await queryEngine.query({
query,
});
```
## Full Example
```ts
import {
Gemini,
Document,
VectorStoreIndex,
Settings,
GEMINI_MODEL,
} from "llamaindex";
Settings.llm = new Gemini({
model: GEMINI_MODEL.GEMINI_PRO,
});
async function main() {
const document = new Document({ text: essay, id_: "essay" });
// Load and index documents
const index = await VectorStoreIndex.fromDocuments([document]);
// Create a query engine
const queryEngine = index.asQueryEngine({
retriever,
});
const query = "What is the meaning of life?";
// Query
const response = await queryEngine.query({
query,
});
// Log the response
console.log(response.response);
}
```
@@ -1,52 +0,0 @@
import CodeBlock from "@theme/CodeBlock";
import CodeSource from "!raw-loader!../../../../../../examples/groq.ts";
# Groq
## Usage
First, create an API key at the [Groq Console](https://console.groq.com/keys). Then save it in your environment:
```bash
export GROQ_API_KEY=<your-api-key>
```
The initialize the Groq module.
```ts
import { Groq, Settings } from "llamaindex";
Settings.llm = new Groq({
// If you do not wish to set your API key in the environment, you may
// configure your API key when you initialize the Groq class.
// apiKey: "<your-api-key>",
});
```
## Load and index documents
For this example, we will use a single document. In a real-world scenario, you would have multiple documents to index.
```ts
const document = new Document({ text: essay, id_: "essay" });
const index = await VectorStoreIndex.fromDocuments([document]);
```
## Query
```ts
const queryEngine = index.asQueryEngine();
const query = "What is the meaning of life?";
const results = await queryEngine.query({
query,
});
```
## Full Example
<CodeBlock language="ts" showLineNumbers>
{CodeSource}
</CodeBlock>
@@ -1,91 +0,0 @@
# LLama2
## Usage
```ts
import { Ollama, Settings, DeuceChatStrategy } from "llamaindex";
Settings.llm = new LlamaDeuce({ chatStrategy: DeuceChatStrategy.META });
```
## Usage with Replication
```ts
import {
Ollama,
ReplicateSession,
Settings,
DeuceChatStrategy,
} from "llamaindex";
const replicateSession = new ReplicateSession({
replicateKey,
});
Settings.llm = new LlamaDeuce({
chatStrategy: DeuceChatStrategy.META,
replicateSession,
});
```
## Load and index documents
For this example, we will use a single document. In a real-world scenario, you would have multiple documents to index.
```ts
const document = new Document({ text: essay, id_: "essay" });
const index = await VectorStoreIndex.fromDocuments([document]);
```
## Query
```ts
const queryEngine = index.asQueryEngine();
const query = "What is the meaning of life?";
const results = await queryEngine.query({
query,
});
```
## Full Example
```ts
import {
LlamaDeuce,
Document,
VectorStoreIndex,
Settings,
DeuceChatStrategy,
} from "llamaindex";
// Use the LlamaDeuce LLM
Settings.llm = new LlamaDeuce({ chatStrategy: DeuceChatStrategy.META });
async function main() {
const document = new Document({ text: essay, id_: "essay" });
// Load and index documents
const index = await VectorStoreIndex.fromDocuments([document]);
// get retriever
const retriever = index.asRetriever();
// Create a query engine
const queryEngine = index.asQueryEngine({
retriever,
});
const query = "What is the meaning of life?";
// Query
const response = await queryEngine.query({
query,
});
// Log the response
console.log(response.response);
}
```
@@ -1,68 +0,0 @@
# Mistral
## Usage
```ts
import { Ollama, Settings } from "llamaindex";
Settings.llm = new MistralAI({
model: "mistral-tiny",
apiKey: "<YOUR_API_KEY>",
});
```
## Load and index documents
For this example, we will use a single document. In a real-world scenario, you would have multiple documents to index.
```ts
const document = new Document({ text: essay, id_: "essay" });
const index = await VectorStoreIndex.fromDocuments([document]);
```
## Query
```ts
const queryEngine = index.asQueryEngine();
const query = "What is the meaning of life?";
const results = await queryEngine.query({
query,
});
```
## Full Example
```ts
import { MistralAI, Document, VectorStoreIndex, Settings } from "llamaindex";
// Use the MistralAI LLM
Settings.llm = new MistralAI({ model: "mistral-tiny" });
async function main() {
const document = new Document({ text: essay, id_: "essay" });
// Load and index documents
const index = await VectorStoreIndex.fromDocuments([document]);
// get retriever
const retriever = index.asRetriever();
// Create a query engine
const queryEngine = index.asQueryEngine({
retriever,
});
const query = "What is the meaning of life?";
// Query
const response = await queryEngine.query({
query,
});
// Log the response
console.log(response.response);
}
```
@@ -1,73 +0,0 @@
# Ollama
## Usage
```ts
import { Ollama, Settings } from "llamaindex";
Settings.llm = ollamaLLM;
Settings.embedModel = ollamaLLM;
```
## Load and index documents
For this example, we will use a single document. In a real-world scenario, you would have multiple documents to index.
```ts
const document = new Document({ text: essay, id_: "essay" });
const index = await VectorStoreIndex.fromDocuments([document]);
```
## Query
```ts
const queryEngine = index.asQueryEngine();
const query = "What is the meaning of life?";
const results = await queryEngine.query({
query,
});
```
## Full Example
```ts
import { Ollama, Document, VectorStoreIndex, Settings } from "llamaindex";
import fs from "fs/promises";
const ollama = new Ollama({ model: "llama2", temperature: 0.75 });
// Use Ollama LLM and Embed Model
Settings.llm = ollama;
Settings.embedModel = ollama;
async function main() {
const essay = await fs.readFile("./paul_graham_essay.txt", "utf-8");
const document = new Document({ text: essay, id_: "essay" });
// Load and index documents
const index = await VectorStoreIndex.fromDocuments([document]);
// get retriever
const retriever = index.asRetriever();
// Create a query engine
const queryEngine = index.asQueryEngine({
retriever,
});
const query = "What is the meaning of life?";
// Query
const response = await queryEngine.query({
query,
});
// Log the response
console.log(response.response);
}
```
@@ -1,69 +0,0 @@
# OpenAI
```ts
import { OpenAI, Settings } from "llamaindex";
Settings.llm = new OpenAI({ model: "gpt-3.5-turbo", temperature: 0, apiKey: <YOUR_API_KEY> });
```
You can setup the apiKey on the environment variables, like:
```bash
export OPENAI_API_KEY="<YOUR_API_KEY>"
```
## Load and index documents
For this example, we will use a single document. In a real-world scenario, you would have multiple documents to index.
```ts
const document = new Document({ text: essay, id_: "essay" });
const index = await VectorStoreIndex.fromDocuments([document]);
```
## Query
```ts
const queryEngine = index.asQueryEngine();
const query = "What is the meaning of life?";
const results = await queryEngine.query({
query,
});
```
## Full Example
```ts
import { OpenAI, Document, VectorStoreIndex, Settings } from "llamaindex";
// Use the OpenAI LLM
Settings.llm = new OpenAI({ model: "gpt-3.5-turbo", temperature: 0 });
async function main() {
const document = new Document({ text: essay, id_: "essay" });
// Load and index documents
const index = await VectorStoreIndex.fromDocuments([document]);
// get retriever
const retriever = index.asRetriever();
// Create a query engine
const queryEngine = index.asQueryEngine({
retriever,
});
const query = "What is the meaning of life?";
// Query
const response = await queryEngine.query({
query,
});
// Log the response
console.log(response.response);
}
```
@@ -1,70 +0,0 @@
# Portkey LLM
## Usage
```ts
import { Portkey, Settings } from "llamaindex";
Settings.llm = new Portkey({
apiKey: "<YOUR_API_KEY>",
});
```
## Load and index documents
For this example, we will use a single document. In a real-world scenario, you would have multiple documents to index.
```ts
const document = new Document({ text: essay, id_: "essay" });
const index = await VectorStoreIndex.fromDocuments([document]);
```
## Query
```ts
const queryEngine = index.asQueryEngine();
const query = "What is the meaning of life?";
const results = await queryEngine.query({
query,
});
```
## Full Example
```ts
import { Portkey, Document, VectorStoreIndex, Settings } from "llamaindex";
// Use the Portkey LLM
Settings.llm = new Portkey({
apiKey: "<YOUR_API_KEY>",
});
async function main() {
// Create a document
const document = new Document({ text: essay, id_: "essay" });
// Load and index documents
const index = await VectorStoreIndex.fromDocuments([document]);
// get retriever
const retriever = index.asRetriever();
// Create a query engine
const queryEngine = index.asQueryEngine({
retriever,
});
const query = "What is the meaning of life?";
// Query
const response = await queryEngine.query({
query,
});
// Log the response
console.log(response.response);
}
```
@@ -1,68 +0,0 @@
# Together LLM
## Usage
```ts
import { TogetherLLM, Settings } from "llamaindex";
Settings.llm = new TogetherLLM({
apiKey: "<YOUR_API_KEY>",
});
```
## Load and index documents
For this example, we will use a single document. In a real-world scenario, you would have multiple documents to index.
```ts
const document = new Document({ text: essay, id_: "essay" });
const index = await VectorStoreIndex.fromDocuments([document]);
```
## Query
```ts
const queryEngine = index.asQueryEngine();
const query = "What is the meaning of life?";
const results = await queryEngine.query({
query,
});
```
## Full Example
```ts
import { TogetherLLM, Document, VectorStoreIndex, Settings } from "llamaindex";
Settings.llm = new TogetherLLM({
apiKey: "<YOUR_API_KEY>",
});
async function main() {
const document = new Document({ text: essay, id_: "essay" });
// Load and index documents
const index = await VectorStoreIndex.fromDocuments([document]);
// get retriever
const retriever = index.asRetriever();
// Create a query engine
const queryEngine = index.asQueryEngine({
retriever,
});
const query = "What is the meaning of life?";
// Query
const response = await queryEngine.query({
query,
});
// Log the response
console.log(response.response);
}
```
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@@ -1,35 +0,0 @@
---
sidebar_position: 3
---
# Large Language Models (LLMs)
The LLM is responsible for reading text and generating natural language responses to queries. By default, LlamaIndex.TS uses `gpt-3.5-turbo`.
The LLM can be explicitly updated through `Settings`.
```typescript
import { OpenAI, Settings } from "llamaindex";
Settings.llm = new OpenAI({ model: "gpt-3.5-turbo", temperature: 0 });
```
## Azure OpenAI
To use Azure OpenAI, you only need to set a few environment variables.
For example:
```
export AZURE_OPENAI_KEY="<YOUR KEY HERE>"
export AZURE_OPENAI_ENDPOINT="<YOUR ENDPOINT, see https://learn.microsoft.com/en-us/azure/ai-services/openai/quickstart?tabs=command-line%2Cpython&pivots=rest-api>"
export AZURE_OPENAI_DEPLOYMENT="gpt-4" # or some other deployment name
```
## Local LLM
For local LLMs, currently we recommend the use of [Ollama](./available_llms/ollama.md) LLM.
## API Reference
- [OpenAI](../api/classes/OpenAI.md)
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@@ -1,97 +0,0 @@
---
sidebar_position: 4
---
# NodeParser
The `NodeParser` in LlamaIndex is responsible for splitting `Document` objects into more manageable `Node` objects. When you call `.fromDocuments()`, the `NodeParser` from the `Settings` is used to do this automatically for you. Alternatively, you can use it to split documents ahead of time.
```typescript
import { Document, SimpleNodeParser } from "llamaindex";
const nodeParser = new SimpleNodeParser();
Settings.nodeParser = nodeParser;
```
## TextSplitter
The underlying text splitter will split text by sentences. It can also be used as a standalone module for splitting raw text.
```typescript
import { SentenceSplitter } from "llamaindex";
const splitter = new SentenceSplitter({ chunkSize: 1 });
const textSplits = splitter.splitText("Hello World");
```
## MarkdownNodeParser
The `MarkdownNodeParser` is a more advanced `NodeParser` that can handle markdown documents. It will split the markdown into nodes and then parse the nodes into a `Document` object.
```typescript
import { MarkdownNodeParser } from "llamaindex";
const nodeParser = new MarkdownNodeParser();
const nodes = nodeParser.getNodesFromDocuments([
new Document({
text: `# Main Header
Main content
# Header 2
Header 2 content
## Sub-header
Sub-header content
`,
}),
]);
```
The output metadata will be something like:
```bash
[
TextNode {
id_: '008e41a8-b097-487c-bee8-bd88b9455844',
metadata: { 'Header 1': 'Main Header' },
excludedEmbedMetadataKeys: [],
excludedLlmMetadataKeys: [],
relationships: { PARENT: [Array] },
hash: 'KJ5e/um/RkHaNR6bonj9ormtZY7I8i4XBPVYHXv1A5M=',
text: 'Main Header\nMain content',
textTemplate: '',
metadataSeparator: '\n'
},
TextNode {
id_: '0f5679b3-ba63-4aff-aedc-830c4208d0b5',
metadata: { 'Header 1': 'Header 2' },
excludedEmbedMetadataKeys: [],
excludedLlmMetadataKeys: [],
relationships: { PARENT: [Array] },
hash: 'IP/g/dIld3DcbK+uHzDpyeZ9IdOXY4brxhOIe7wc488=',
text: 'Header 2\nHeader 2 content',
textTemplate: '',
metadataSeparator: '\n'
},
TextNode {
id_: 'e81e9bd0-121c-4ead-8ca7-1639d65fdf90',
metadata: { 'Header 1': 'Header 2', 'Header 2': 'Sub-header' },
excludedEmbedMetadataKeys: [],
excludedLlmMetadataKeys: [],
relationships: { PARENT: [Array] },
hash: 'B3kYNnxaYi9ghtAgwza0ZEVKF4MozobkNUlcekDL7JQ=',
text: 'Sub-header\nSub-header content',
textTemplate: '',
metadataSeparator: '\n'
}
]
```
## API Reference
- [SimpleNodeParser](../api/classes/SimpleNodeParser.md)
- [SentenceSplitter](../api/classes/SentenceSplitter.md)
@@ -1,2 +0,0 @@
label: "Node Postprocessors"
position: 3
@@ -1,67 +0,0 @@
# Cohere Reranker
The Cohere Reranker is a postprocessor that uses the Cohere API to rerank the results of a search query.
## Setup
Firstly, you will need to install the `llamaindex` package.
```bash
pnpm install llamaindex
```
Now, you will need to sign up for an API key at [Cohere](https://cohere.ai/). Once you have your API key you can import the necessary modules and create a new instance of the `CohereRerank` class.
```ts
import {
CohereRerank,
Document,
OpenAI,
VectorStoreIndex,
Settings,
} from "llamaindex";
```
## Load and index documents
For this example, we will use a single document. In a real-world scenario, you would have multiple documents to index.
```ts
const document = new Document({ text: essay, id_: "essay" });
Settings.llm = new OpenAI({ model: "gpt-3.5-turbo", temperature: 0.1 });
const index = await VectorStoreIndex.fromDocuments([document]);
```
## Increase similarity topK to retrieve more results
The default value for `similarityTopK` is 2. This means that only the most similar document will be returned. To retrieve more results, you can increase the value of `similarityTopK`.
```ts
const retriever = index.asRetriever();
retriever.similarityTopK = 5;
```
## Create a new instance of the CohereRerank class
Then you can create a new instance of the `CohereRerank` class and pass in your API key and the number of results you want to return.
```ts
const nodePostprocessor = new CohereRerank({
apiKey: "<COHERE_API_KEY>",
topN: 4,
});
```
## Create a query engine with the retriever and node postprocessor
```ts
const queryEngine = index.asQueryEngine({
retriever,
nodePostprocessors: [nodePostprocessor],
});
// log the response
const response = await queryEngine.query("Where did the author grown up?");
```
@@ -1,105 +0,0 @@
# Node Postprocessors
## Concept
Node postprocessors are a set of modules that take a set of nodes, and apply some kind of transformation or filtering before returning them.
In LlamaIndex, node postprocessors are most commonly applied within a query engine, after the node retrieval step and before the response synthesis step.
LlamaIndex offers several node postprocessors for immediate use, while also providing a simple API for adding your own custom postprocessors.
## Usage Pattern
An example of using a node postprocessors is below:
```ts
import {
Node,
NodeWithScore,
SimilarityPostprocessor,
CohereRerank,
} from "llamaindex";
const nodes: NodeWithScore[] = [
{
node: new TextNode({ text: "hello world" }),
score: 0.8,
},
{
node: new TextNode({ text: "LlamaIndex is the best" }),
score: 0.6,
},
];
// similarity postprocessor: filter nodes below 0.75 similarity score
const processor = new SimilarityPostprocessor({
similarityCutoff: 0.7,
});
const filteredNodes = await processor.postprocessNodes(nodes);
// cohere rerank: rerank nodes given query using trained model
const reranker = new CohereRerank({
apiKey: "<COHERE_API_KEY>",
topN: 2,
});
const rerankedNodes = await reranker.postprocessNodes(nodes, "<user_query>");
console.log(filteredNodes, rerankedNodes);
```
Now you can use the `filteredNodes` and `rerankedNodes` in your application.
## Using Node Postprocessors in LlamaIndex
Most commonly, node-postprocessors will be used in a query engine, where they are applied to the nodes returned from a retriever, and before the response synthesis step.
### Using Node Postprocessors in a Query Engine
```ts
import { Node, NodeWithScore, SimilarityPostprocessor, CohereRerank, Settings } from "llamaindex";
// Use OpenAI LLM
Settings.llm = new OpenAI({ model: "gpt-3.5-turbo", temperature: 0.1 });
const nodes: NodeWithScore[] = [
{
node: new TextNode({ text: "hello world" }),
score: 0.8,
},
{
node: new TextNode({ text: "LlamaIndex is the best" }),
score: 0.6,
}
];
// cohere rerank: rerank nodes given query using trained model
const reranker = new CohereRerank({
apiKey: "<COHERE_API_KEY>,
topN: 2,
})
const document = new Document({ text: "essay", id_: "essay" });
const queryEngine = index.asQueryEngine({
nodePostprocessors: [processor, reranker],
});
// all node post-processors will be applied during each query
const response = await queryEngine.query("<user_query>");
```
### Using with retrieved nodes
```ts
import { SimilarityPostprocessor } from "llamaindex";
nodes = await index.asRetriever().retrieve({ query: "test query str" });
const processor = new SimilarityPostprocessor({
similarityCutoff: 0.7,
});
const filteredNodes = processor.postprocessNodes(nodes);
```

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