Deep comparison in PureComponent question

Hello team,

We have a base class for React components that we're beginning to use. It's like PureComponent but does deep comparison of JSON-like values (just objects, arrays, and primitives). The purpose is to avoid re-renders when inputs haven't changed, even when objects/arrays were reconstructed.

import React from 'react';
import { compareObj } from './deepCompare';

export default class PureDeepComponent extends React.Component {
    shouldComponentUpdate(newProps, newState) {
        return !(compareObj(this.props, newProps) && compareObj(this.state, newState));
    }
}

I was surprised that something like this wasn't included in React, and I'm wondering what the team's thoughts are -- was there a good reason for not doing something like this?

No file, test, or entry point is identified. Start by reviewing the PureComponent and shouldComponentUpdate behavior described in the issue, then determine whether the desired outcome is a React API feature or documentation; the issue is not complete until that scope and acceptance criteria are agreed.