import type { BillingPortalUrlResponse, CancelPlanArgs, CheckoutSessionResponse, GetPricingArgs, PricesResponse, PricingResponse, ProBillingPortalArgs, ProPlanDetails, StartProTrialArgs, StartWorkspaceTrialArgs, SubscriptionInfo, UpgradeToProArgs, UpgradeWorkspaceArgs, WorkspaceBillingPortalArgs } from '../types/billing/index.js';
import { BaseClient } from './base-client.js';
/**
 * Internal sub-client handling all billing-domain endpoints.
 *
 * Instantiated by `TodoistApi`; every public billing method on `TodoistApi`
 * delegates here. See `todoist-api.ts` for the user-facing JSDoc.
 */
export declare class BillingClient extends BaseClient {
    getSubscriptionInfo(): Promise<SubscriptionInfo>;
    cancelPlan(args?: CancelPlanArgs, requestId?: string): Promise<BillingPortalUrlResponse>;
    reactivatePlan(requestId?: string): Promise<SubscriptionInfo>;
    upgradeToPro(args: UpgradeToProArgs, requestId?: string): Promise<CheckoutSessionResponse>;
    startProTrial(args: StartProTrialArgs, requestId?: string): Promise<CheckoutSessionResponse>;
    createProBillingPortalSession(args: ProBillingPortalArgs, requestId?: string): Promise<BillingPortalUrlResponse>;
    getProPlanDetails(): Promise<ProPlanDetails>;
    upgradeWorkspace(args: UpgradeWorkspaceArgs, requestId?: string): Promise<CheckoutSessionResponse>;
    startWorkspaceTrial(args: StartWorkspaceTrialArgs, requestId?: string): Promise<CheckoutSessionResponse>;
    createWorkspaceBillingPortalSession(args: WorkspaceBillingPortalArgs, requestId?: string): Promise<BillingPortalUrlResponse>;
    getPrices(): Promise<PricesResponse>;
    getPricing(args?: GetPricingArgs): Promise<PricingResponse>;
}