@shopify/polaris/esnext/utilities/use-is-after-initial-mount.js

Shopify’s product component library

import { useState, useEffect } from 'react';
export function useIsAfterInitialMount() {
    const [isAfterInitialMount, setIsAfterInitialMount] = useState(false);
    useEffect(() => {
        setIsAfterInitialMount(true);
    }, []);
    return isAfterInitialMount;
}