export interface InvoiceItem {
    /**
     * ID of the Invoice Item object.
     */
    id: string;
    /**
     * The amount of the total charge or credit for this item. Decimal, including the correct number of decimal places for the currency exponent, as defined in ISO 2417:2015. If the amount is a whole number, use an integer and not a decimal.
     *
     * This is `quantity` times `unit_amount`. A credit is indicated by a negative number.
     */
    amount: number;
    /**
     * Three-letter ISO 4217 code for the currency used in the `amount` field. Uppercase.
     */
    currency: string;
    /**
     * ID of the customer. String starting with **cus_**.
     *
     * For more information, see [Customer Object](ref:customer-object).
     */
    customer: `cus_${string}`;
    /**
     * The time of the charge or credit, in [*Unix time*](ref:glossary).
     */
    date: number;
    /**
     * Description of the invoice item.
     */
    description: string;
    /**
     * Determines whether this invoice item is subject to the discount defined in the coupon that is assigned to the customer or subscription.
     *
     * For negative amounts and prorations, the default is **false**, and for all other invoice items, the default is **true**.
     */
    discountable: boolean;
    /**
     * ID of the invoice that this invoice item is assigned to. Relevant when `subscription` is not set.
     */
    invoice: string;
    /**
     * A JSON object defined by the client.
     */
    metadata: object;
    /**
     * Defines the start and end of the time period that this invoice item refers to. Relevant when the invoice item refers to more than one day. Contains the following fields:
     * * `start` - The start of the time period.
     * * `end` - The end of the time period.
     */
    period: {
        start: unknown;
        end: unknown;
    };
    /**
     * Describes the pricing structure for the invoice item.
     *
     * For more information, see [Plan Object](#plan-object).
     */
    plan: object;
    /**
     * Indicates whether the invoice item is prorated. Response only.
     */
    proration: boolean;
    /**
     * Indicates the number of units charged as a single invoice item. Integer.
     */
    quantity: number;
    /**
     * ID of the subscription to assign this invoice item to. By default, the invoice item is assigned to the customer's subscription whose current billing cycle ends first. Relevant when `invoice` is not set.
     *
     * For more information, see [Subscription Object](ref:subscription-object).
     */
    subscription: string;
    /**
     * Per-unit price of the product or service, adjusted as defined in the plan. Decimal.
     */
    unit_amount: number;
}
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