import { TypedData, Reference, Action, Response, Ident } from '../types.js';
import type { ShapeDef, FieldDefinition } from '../schema/types.js';
export declare const isObject: (value: unknown) => value is Record<string, unknown>;
export declare const isDate: (value: unknown) => value is Date;
export declare const isEmptyObject: (value: unknown) => value is object;
export declare const isTypedData: (value: unknown) => value is TypedData;
export declare const isReference: (value: unknown) => value is Reference;
export declare const isShape: (value: unknown) => value is ShapeDef;
export declare const isFieldDefinition: (value: unknown) => value is FieldDefinition;
export declare const isNullOrUndefined: (value: unknown) => value is null | undefined;
export declare const isNotNullOrUndefined: <T>(value: T) => value is NonNullable<T>;
export declare const isAction: (action: unknown) => action is Action;
export declare const isOkStatus: (status?: string) => boolean;
export declare const isOkResponse: (response?: Response) => response is Response;
export declare const isErrorResponse: (response?: Response) => boolean;
export declare const isTruthy: (value: unknown) => boolean;
export declare const isFalsy: (value: unknown) => boolean;
export declare const not: (value: unknown) => boolean;
export declare const isDuplicate: <T = unknown>(error: T, index: number, errors: T[]) => boolean;
export declare const isCustomIdent: (ident?: Ident) => boolean;
export declare const isInternalIdent: (ident?: Ident) => boolean;
export declare const isRootIdent: (ident?: Ident) => boolean | undefined;
export declare const isSchedulerIdent: (ident?: Ident) => boolean;
export declare const isAnonIdent: (ident?: Ident) => boolean;