export type Retry = 'never' | 'now' | 'later';
export type StipendErrorCode = 'payment_required' | 'account_paused' | 'insufficient_funds' | 'entitlement_expired' | 'provider_error' | 'internal_error' | 'validation';
export interface StipendErrorOptions {
    message: string;
    retry?: Retry;
    cause?: unknown;
    data?: Readonly<Record<string, unknown>>;
}
export declare abstract class StipendError extends Error {
    abstract readonly code: StipendErrorCode;
    readonly retry: Retry;
    readonly data: Readonly<Record<string, unknown>>;
    constructor(opts: StipendErrorOptions);
    toJSON(): Record<string, unknown>;
}
export declare class PaymentRequiredError extends StipendError {
    readonly code: "payment_required";
}
export declare class AccountPausedError extends StipendError {
    readonly code: "account_paused";
}
export declare class InsufficientFundsError extends StipendError {
    readonly code: "insufficient_funds";
}
export declare class EntitlementExpiredError extends StipendError {
    readonly code: "entitlement_expired";
}
export declare class ProviderError extends StipendError {
    readonly code: "provider_error";
}
export declare class InternalError extends StipendError {
    readonly code: "internal_error";
}
export declare class ValidationError extends StipendError {
    readonly code: "validation";
}
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