ラインアイテムを更新するベータ

const session = await stripe.checkout.sessions.create({
  line_items: [
    {
      price_data: {
        currency: 'usd',
        product_data: {
          name: 'T-shirt',
        },
        unit_amount: 2000,
      },
      quantity: 1,
      adjustable_quantity: {
        enabled: true,
        maximum: 100,
        minimum: 0,
      },
    },
  ],
  mode: 'payment',
  ui_mode: 'custom',
  return_url: '{{RETURN_URL}}'
});

import React from 'react';
import {useCustomCheckout} from '@stripe/react-stripe-js';

const IncrementLineItemButton = (props) => {
  const {updateLineItemQuantity} = useCustomCheckout();

  const handleClick = () => {
    updateLineItemQuantity({
      lineItem: props.lineItem,
      quantity: props.quantity + 1,
    });
  };
  return <button onClick={handleClick}>+</button>;
};

export default IncrementLineItemButton;