a lot of libs can roll with this tiny shim.

* Preact Compat "Lite".md

Usage:

In your webpack config:

resolve: {
  alias: {
    'react': 'preact-compat-lite',
    'react-dom': 'preact-compat-lite'
  }
}

preact-compat-lite.js

import { * as preact } from 'preact';
export * from 'preact';
import { * as hooks } from 'preact';
export * from 'preact/hooks';

const toArray = preact.toChildArray;
const map = (c, f) => c && toArray(toArray(c).map(f));

export const Children = preact.Children = {
  map: map,
  forEach: map,
  toArray: toArray,
  only: c => toArray(c)[0],
  count: c => c && toArray(c).length || 0
};

export default Object.assign(preact, hooks);