/*!
 * Copyright (C) Microsoft Corporation. All rights reserved.
 */
export declare function stringifyError(error: unknown): string;
export declare function isCancellationError(error: unknown): error is Error;
/**
 * Thrown by `addDataSourceAsync` when every operation in a connector's swagger is
 * marked `x-ms-visibility: internal`, leaving nothing to generate. The CLI
 * surfaces this to the user as a usage error.
 *
 * Mirrors `NoPublicActionsError` in `@microsoft/managed-apps-actions` — both stacks
 * must fail the same way for an all-internal connector, message included.
 *
 * `internalActions` is kept as structured data for telemetry and callers; it is
 * deliberately not spelled out in the message, which stays to the point.
 */
export declare class NoPublicActionsError extends Error {
    readonly connectorDisplayName: string;
    readonly internalActions: number;
    constructor(connectorDisplayName: string, internalActions: number);
}
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