# Twitter API v2

Strongly typed, full-featured, light, versatile yet powerful Twitter API v1.1 and v2 client for Node.js.

## Highlights

✅ **Ready for v2 and good ol' v1.1 Twitter API**

✅ **Light: No dependencies, 11.7kb minified+gzipped**

✅ **Bundled types for request parameters and responses**

✅ **Streaming support**

✅ **Pagination utils**

✅ **Media upload helpers**

## Why?

Sometimes, you just want to quickly bootstrap an application using the Twitter API.
Even if they're a lot a available librairies on the JavaScript ecosystem, they usually just
provide wrappers around HTTP methods, and some of them are bloated with many dependencies.

`twitter-api-v2` meant to provide full endpoint wrapping, from method name to response data,
using descriptive typings for read/write/DMs rights, request parameters and response payload.

A small feature comparaison with other libs:

| Package        | API version(s) | Response typings | Media helpers | Pagination | Subdependencies |  Size (gzip)  |
| -------------- | -------------- | ---------------- | ------------- | ---------- | --------------- | -------------:|
| twitter-api-v2 | v1.1, v2, labs | ✅               | ✅             | ✅         | 0               | ~11.7 kB      |
| twit           | v1.1           | ❌               | ✅             | ❌         | 51              | ~214.5 kB     |
| twitter        | v1.1           | ❌               | ❌             | ❌         | 50              | ~182.1 kB     |
| twitter-lite   | v1.1, v2       | ❌               | ❌*            | ❌         | 4               | ~5.3 kB       |
| twitter-v2     | v2             | ❌               | ❌             | ❌         | 7               | ~4.5 kB       |

\**No support for `media/upload`, cannot send a `multipart/form-data` encoded-body without tricks*

## Features

Here's the detailed feature list of `twitter-api-v2`:

### Basics:
- Support for v1.1 and **v2 of Twitter API**
- Make signed HTTP requests to Twitter with every Twitter required auth type:
  - classic **OAuth 1.0a** authentification for user-context endpoints
  - **OAuth2 Bearer token** for app-only endpoints
  - **Basic** HTTP Authorization, required for some auth endpoints or Entreprise API
- Helpers for numerous HTTP request methods (`GET`, `POST`, `PUT`, `DELETE` and `PATCH`),
  that handle query string parse & format, automatic body formatting and more
- High-class support for stream endpoints, with easy data consumption and auto-reconnect on stream errors

### Request helpers:
- Automatic paginator for endpoints like user and tweet timelines,
  allowing payload consumption with modern asynchronous iterators until your rate-limit is hit
- Convenient methods for authentication - generate auth links and ask for tokens to your users will be a breeze
- Media upload with API v1.1, including **long video & subtitles support**,  automatic media type detection,
  **chunked upload** and support for **concurrent uploads**
- Dedicated methods that wraps API v1.1 & v2 endpoints, with **typed arguments** and fully **typed responses**
  *(WIP - not all public endpoints are available)*
- Bundled parsing of rate limit headers
- Typed errors, meaningful error messages, error enumerations for both v1.1 and v2

### Type-safe first:
- **Typings for tweet, user, media entities (and more) are bundled in this package!**
- Type-safe wrapping of dedicated methods in 3 right level: *DM*/*Read-write*/*Read-only* (just like Twitter API do!) -
  you can declare a read-only client - you will only see the methods associated with read-only endpoints


And last but not least, fully powered by native `Promise`s.

## How to use

Install it through your favorite package manager:
```bash
yarn add twitter-api-v2
# or
npm i twitter-api-v2
```

Here's is a quick example of usage:

```ts
import TwitterApi from 'twitter-api-v2';

// Instanciate with desired auth type (here's Bearer v2 auth)
const twitterClient = new TwitterApi('<YOUR_APP_USER_TOKEN>');

// Tell typescript it's a readonly app
const roClient = twitterClient.readOnly;

// Play with the built in methods
const user = await roClient.v2.userByUsername('plhery');
await twitterClient.v1.tweet('Hello, this is a test.');
// You can upload media easily!
await twitterClient.v1.uploadMedia('./big-buck-bunny.mp4');

// Or manually call the API
await twitterClient.v2.get('tweets/search/recent', { query: 'nodeJS', max_results: 100 });
const tweets = await twitterClient.get('https://api.twitter.com/2/tweets/search/recent?query=nodeJS&max_results=100');
```

### Basics

You want **to know more about client usage? See [the Basics](./doc/basics.md)**!

### Examples

Wanna see that in action? Jump to [Examples part](./doc/examples.md).

## Authentification

Lost between the different ways to auth inside Twitter API?
Don't know how to implement 3-legged OAuth flow?

See [Authentification part](./doc/auth.md) to know more and have a comprehensive guide a every Twitter authentification process.

## Streaming

APIs dedicated to streaming are available in [Streaming part](./doc/streaming.md).

## Full package API

Each Twitter endpoint > method association is described in details inside [the v1.1 comprehensive documentation](./doc/v1.md)
and [the v2 comprehensive documentation](./doc/v2.md).