export default class BillingService { initClient(arg: any) { return; } fetchPlan = async () => { return Promise.resolve() } fetchInvoices = async (period: { startTimestamp: number, endTimestamp: number, limit: number, page: number, }) => { return Promise.resolve() } upgradePlan = async (instance: any) => { return Promise.resolve() } updatePlan = async (instance: any) => { return Promise.resolve() } cancelPlan = async () => { return Promise.resolve() } enablePlan = async () => { return Promise.resolve() } getOnboard = async () => { return Promise.resolve() } }