@comparaonline/event-tracker/types/transactionEvent.d.ts

This library it's an interface between any frontend application and some event tracking platforms, currently Snowplow and Tag Manager.

import type { MandatoryProps } from './utils';
export type TransactionData = MandatoryProps & {
    currency: string;
    itemCount: number;
    orderId: string;
    paymentMethod: string;
    price: number;
    type: 'enrollment' | 'purchase';
    couponCode?: string;
    tax?: number;
};