import { McpError } from '@mcp-abap-adt/llm-agent';
/**
 * Map a thrown/returned transport error to an McpError with an availability
 * code. Shared by McpClientAdapter (catch + returned-error path) and
 * MCPClientWrapper (throw on retry exhaustion) so both classify identically.
 *
 * The default for an UNRECOGNIZED message is the non-availability `MCP_ERROR`,
 * so a plain tool error never escalates to fail-loud / NOT_READY. Connection /
 * network / timeout / HTTP-5xx-or-403 signatures DO escalate — including the
 * Node `fetch failed` shape whose real cause (ECONNREFUSED / ENOTFOUND / …)
 * lives on `err.cause`.
 */
export declare function toMcpError(err: unknown): McpError;
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