`Can't resolve 'http2'`for React & `Can't resolve 'dns'` for Next,js

I want to use the Notion API. Can these be used in React? I wrote it like this.

import { Client } from '@notionhq/client';

function App() {
  const notion = new Client({ auth: process.env.REACT_APP_INTEGRATION_TOKEN });
  return (
    <div className="App">
    // ...more

In Next.js, Module not found: Can't resolve 'dns'. In CRA, Module not found: Can't resolve 'http2'. is displayed.

package.json

{
  "name": "lesson-notion-api",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "@notionhq/client": "^0.1.3",
    "@testing-library/jest-dom": "^5.11.4",
    "@testing-library/react": "^11.1.0",
    "@testing-library/user-event": "^12.1.10",
    "react": "^17.0.2",
    "react-dom": "^17.0.2",
    "react-scripts": "4.0.3",
    "web-vitals": "^1.0.1"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
  },
  "eslintConfig": {
    "extends": [
      "react-app",
      "react-app/jest"
    ]
  },
  "browserslist": {
    "production": [
      ">0.2%",
      "not dead",
      "not op_mini all"
    ],
    "development": [
      "last 1 chrome version",
      "last 1 firefox version",
      "last 1 safari version"
    ]
  }
}

[aoberoi]

Thanks for describing what you’re hoping to accomplish. At this time, this project doesn’t support what you’ve described. But it might be something we add! Let’s discuss it over in #60. I’m going to close this issue so I can funnel several discussions together.

[janzheng]

Using this on the Svelte client, getting same error. No problem running in server-side using Sapper.

Edit: not sure why discussions are all deleted, but turns out notion client can’t be used in a browser / client-side. Would be really helpful if that was added to the official documentation @aoberoi