import { ErrorLike, OutputWithStatus } from '@platforma-sdk/model';
import { OptionalResult } from './types';
import { ZodError } from 'zod';
export declare class UnresolvedError extends Error {
    name: string;
}
export declare class MultiError extends Error {
    readonly errors: (ErrorLike | string)[];
    name: string;
    readonly fullMessage: string;
    constructor(errors: (ErrorLike | string)[]);
}
export declare function unwrapOutput<V>(output?: OutputWithStatus<V>): V;
export declare function ensureOutputHasStableFlag<T>(output?: OutputWithStatus<T>): {
    ok: false;
    errors: ErrorLike[];
    moreErrors: boolean;
} | {
    ok: true;
    value: T;
    stable: boolean;
};
export declare function wrapOptionalResult<V>(value: V): OptionalResult<V>;
export declare function isDefined<T>(v: T | undefined): v is T;
export declare const identity: <T, V = T>(v: T) => V;
export declare const ensureError: (cause: unknown) => Error;
export declare const isZodError: (err: Error) => err is ZodError;
export declare const formatZodError: (err: ZodError) => string;
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