/**
* Root error class for every misina-thrown failure (`HTTPError`,
* `NetworkError`, `TimeoutError`, `ResponseTooLargeError`, `CircuitOpenError`,
* `DigestMismatchError`, `SchemaValidationError`, `GraphqlAggregateError`,
* `PollExhaustedError`). Use `instanceof MisinaError` to discriminate
* misina failures from arbitrary thrown values, and the more specific
* subclasses to discriminate by failure mode.
*
* @example
* ```ts
* import { MisinaError, isHTTPError, isTimeoutError } from "misina"
*
* try {
*   await api.get("/users/42")
* } catch (err) {
*   if (isHTTPError(err)) console.warn("HTTP", err.status)
*   else if (isTimeoutError(err)) console.warn("slow upstream")
*   else if (err instanceof MisinaError) console.warn("misina:", err.message)
*   else throw err
* }
* ```
*/
export declare class MisinaError extends Error {
	override readonly name: string;
	constructor(message: string, options?: {
		cause?: unknown;
	});
	/**
	* Structured serialization — pino / winston / bunyan / @std/log all call
	* this. Returns a plain object safe for `JSON.stringify`. Includes the
	* `cause` chain when present.
	*/
	toJSON(): Record<string, unknown>;
}