miguel-herrera-product-card-react/src/hooks/useProduct.ts

Este es un paquete de pruebas de despliegue en npm

import { useEffect, useRef, useState } from 'react';
import { Product, onChangeArgs, InitialValues } from '../interfaces/product.interfaces';

interface UseProductArgs {
    product: Product;
    onChange?: ( args: onChangeArgs) => void;
    value?: number;
    initialValues?: InitialValues;
}

export const useProduct = ({onChange, product, value = 0, initialValues}: UseProductArgs ) => {
    const [counter, setCounter] = useState<number>( initialValues?.count || value);

    const isMounted = useRef(false)
    const increaseBy = (value:number) => {
        let newValue = Math.max(counter + value, 0 );
        if ( initialValues?.maxCount && newValue > 0) {
            newValue = Math.min(counter + value, initialValues?.maxCount );
        }
        setCounter( newValue );
        onChange && onChange({count: newValue, product});
    }

    const reset = () => {
        setCounter(initialValues?.count || value)
    }
    useEffect(() => {
        if ( !isMounted.current ) return;
        setCounter(value);
    }, [value])
    
    useEffect(() => {
        isMounted.current = true
    }, [])
    

    return {
        counter,
        isMaxCountReached: !!initialValues?.maxCount && initialValues?.maxCount === counter,
        
        increaseBy,
        reset
  }
}