export interface SubscriptionItem {
    /**
     * ID of the Subscription Item object. String starting with **subi\_**.
     */
    id: string;
    /**
     * The time the subscription item was created, in [*Unix time*](ref:glossary). Response only.
     */
    created: number;
    /**
     * A JSON object defined by the client.
     */
    metadata: object;
    /**
     * The pricing plan that defines the product and pricing structure associated with this subscription item.
     *
     * See [Plan Object](ref:plan-object).
     */
    plan: object;
    /**
     * Determines whether the charge is prorated, in the following situations:
     * * When a subscription item is switched from one subscription to another in a billing cycle.
     * * When a new customer starts in the middle of a billing cycle.
     * * When the customer cancels the subscription.
     */
    prorate: boolean;
    /**
     * Indicates the date in [*Unix time*](ref:glossary) in the middle of the billing period that is the start or end of the prorated item. The other end is determined by the `period_start` or `period_end` of the invoice.
     *
     * If the subscription and its subscription item have different proration dates, the proration takes place on the earlier of the two dates.
     */
    proration_date: number;
    /**
     * The number of units of the service defined in the plan. Integer. This number can be updated during the billing cycle using [Update Subscription](ref:update-subscription) or [Update Subscription Item](ref:update-subscription-item).
     */
    quantity: number;
    /**
     * ID of the subscription that this item belongs to. String starting with **sub_**.
     *
     * See [Subscription Object](ref:subscription-object).
     */
    subscription: `sub_${string}`;
}
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