createSolanaRpcSubscriptions in a browser extension throws error

[liepauls]

Overview

createSolanaRpcSubscriptions in a browser extension throws error Cannot read properties of undefined (reading 'addEventListener')

Steps to reproduce

1. Create a browser extension
2. Run something along the lines of:

const rpc = createSolanaRpc('https://api.devnet.solana.com')
const rpcSubscriptions = createSolanaRpcSubscriptions('wss://api.devnet.solana.com')

const sendAndConfirmTransaction = sendAndConfirmTransactionFactory({
  rpc,
  rpcSubscriptions,
})

const signedTx = ...

sendAndConfirmTransaction(signedTx, { commitment: 'confirmed' })

Please, let me know if a more detailed info on how to reproduce the error is needed 🤞

Description of bug

When sendAndConfirmTransaction is called, Cannot read properties of undefined (reading 'addEventListener') is thrown.

The error probably comes from here.

[steveluscher]

Nice find. Which browser is this?

I presume that in contentScripts that globalThis.window is undefined but globalThis is an EventTarget. It looks like in browser-ish environments, globalThis is always an EventTarget, so it should be safe to change this to globalThis.addEventListener everywhere.

[liepauls]

Hi @steveluscher, thanks for addressing the issue 🙇

Occured in Brave, tried your fix and it looks like the problem is gone.