Lavalink API Client

A type-safe API client for Lavalink, it uses the lavalink-protocol package.

• Compatible with Lavalink v4 Beta 3

Feel free to join our Discord Server.

To start using lavalink-api-client you must create an API client.

import { LavalinkAPIClient } from "lavalink-api-client";

const client = new LavalinkAPIClient({
    host: "127.0.0.1",
    port: 2333,
    auth: "youshallnotpass",
});

You can either make the requests manually or use our custom type-safe methods for each endpoint.

This is great if you want to make a request to an endpoint that isn't supported by the client or if you just want to break the rules :3

import type { RESTGetAPINodeInfo } from "lavalink-protocol";

const response = await client.execute({
    path: "/v4/info",
    method: "GET",
});

const data: RESTGetAPINodeInfo = await response.json();
// Hope and pray that the data is correct.

These ensure that the data from the JSON body, query parameters, and response body are in compliance with the lavalink protocol.

Syntax is execute<Endpoint>(client, request info, extra request options)

import { executeInfo } from "lavalink-api-client";

const response = await executeInfo(client, {}, {});
//    ^? RESTGetAPINodeInfo

Error handling is a #1 priority for us, so we've made it extremely easy to handle errors.

import { isLavalinkHTTPError, isLavalinkAPIError } from "lavalink-api-client";

try {
    // execute a request.
} catch (ex) {
    if (isLavalinkAPIError(ex)) {
        // handle API error.
        console.log(ex.data.status);
    }

    if (isLavalinkHTTPError(ex)) {
        // handle HTTP error.
    }
}

The different reasons an HTTP error may occur are:

1. The response body couldn't be decoded.
2. The request failed to send.
3. Lavalink returned an error.
4. Something unknown happened.
5. A validation error occurred.
6. The request was aborted.

Differences between an HTTP and API Error:

• LavalinkHTTPError's are thrown when something went wrong somewhere in the request - most originate from the client.
• LavalinkAPIError's are thrown when Lavalink returns a non 2.x.x status code - although these extend HTTP errors, they only originate from Lavalink.

tl;dr HTTP errors indicate a general error, API errors indicate Lavalink returned an error.

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