import type { Target } from '@traversable/registry';
import { Type } from './functor.js';
export type Tagged = {
    shape: Record<string, unknown>;
    tag: string | number | bigint | boolean | null | undefined;
};
export type Discriminated = [
    discriminant: string | number,
    tagged: Tagged[]
];
export type PathSpec = {
    path: (string | number)[];
    ident: string;
};
export declare const Invariant: {
    IllegalState(functionName: string, expected: string, got: unknown): never;
};
export declare const defaultPrevSpec: {
    ident: string;
    path: string[];
};
export declare const defaultNextSpec: {
    ident: string;
    path: string[];
};
export declare function isSpecialCase(x: unknown): x is Type.Literal;
export declare function isNumeric(x: unknown): x is Type.Integer | Type.Number;
export declare function isScalar(x: unknown): x is Type.Boolean | Type.String;
export declare function isTypelevelNullary(x: unknown): x is Type.Never | Type.Unknown;
export type Primitive = Target<typeof isPrimitive>;
export type DeepClonePrimitive = Target<typeof deepCloneIsPrimitive>;
export declare function isPrimitive(x: unknown): x is Type.Boolean | Type.Integer | Type.Number | Type.String | Type.Literal;
export declare function deepCloneIsPrimitive(x: unknown): x is Type.Null | Type.Boolean | Type.Integer | Type.Number | Type.String | Type.Literal;
export declare function schemaOrdering([x]: readonly [unknown, number], [y]: readonly [unknown, number]): 0 | 1 | -1;
export declare function deepCloneSchemaOrdering<T>(x: T, y: T): 0 | 1 | -1;
export declare function deepCloneInlinePrimitiveCheck(x: DeepClonePrimitive, LEFT_SPEC: PathSpec, RIGHT_SPEC?: PathSpec, useGlobalThis?: boolean): string;
export declare function inlinePrimitiveCheck(x: Primitive, LEFT_SPEC: PathSpec, RIGHT_SPEC?: PathSpec, useGlobalThis?: boolean): string;
export declare function areAllObjects(xs: readonly unknown[]): xs is readonly Type.Object<unknown>[];
export declare function getTags(xs: readonly unknown[]): Discriminated | null;
export declare function flattenUnion(options: readonly unknown[], out?: unknown[]): unknown[];
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