Here's an example of how to use Bundlr / Arweave with Lit.
Prerequisite
1. You will need to have an Arweave wallet already, if not click
here2. You will need to fund the node (it might take up to an hour), more info
hereEncryption
1. Drop your wallet.json keyfile to login
It uses the FileReader API to read the file as text and pass it to the Bundlr constructor to get its wallet address