If you want to use Bundlr Network head over to this repo
A low level library for creating, editing, reading and verifying bundles.
See ANS-104 for more details.
Using npm:
npm install arbundles
Using yarn:
yarn add arbundles
import { bundleAndSignData, createData } from "arbundles";
const dataItems = [createData("some data"), createData("some other data")];
const signer = new ArweaveSigner(jwk);
const bundle = await bundleAndSignData(dataItems, jwk);