Can't return `htmlResponse` for JS SDK

[ansbr]

Hello! Thanks for framework, it's great. But I have a problem with JS SDK,
In AssembleScript we have

import { util } from 'near-sdk-as'
...
function htmlResponse(text: string): Web4Response {
   return { contentType: 'text/html; charset=UTF-8', body: util.stringToBytes(text), status: 200 } as Web4Response;
}

But in JS SDK we haven't util, so I tried something like this:

function htmlResponse(text: string): Web4Response {
    return { contentType: 'text/html; charset=UTF-8', body: new TextEncoder().encode(text), status: 200 } as Web4Response;
}

But it not working...
Could you create example for JS SDK? It will be very helpful for all js developers).

[vgrichina]

@anbork do you have example code somewhere so that I can check quickly? I don't have any JS smart contract project set up right now.