import { ApiPromise, WsProvider } from '@polkadot/api'; import { Bytes } from '@polkadot/types'; import { types } from '@joystream/types' async function main() { const provider = new WsProvider('ws://127.0.0.1:9944'); const api = await ApiPromise.create({ provider, types }) const input:string = "myInputString" const output = new Bytes(api.registry, input); /* Some extrinsics require input as "Bytes". Replace with the string you want, and the output can be pasted in. */ console.log("input string", input) console.log("output, as bytes toHex",output.toHex()) api.disconnect() } main()