import { type TSESTree } from "@typescript-eslint/utils";
type TupleWrappedGuardTarget = "never" | "null" | "undefined";
/**
 * Determine whether a type node is the exact boolean literal type requested.
 */
export declare const isBooleanLiteralType: (node: Readonly<TSESTree.TypeNode>, value: boolean) => boolean;
/**
 * Return the only tuple element type when the node is a single-element tuple.
 */
export declare const getSingleTupleElementType: (node: Readonly<TSESTree.TypeNode>) => TSESTree.TypeNode | undefined;
/**
 * Determine whether a conditional type has exact `true` then `false` branches.
 */
export declare const hasTrueFalseBranches: (node: Readonly<TSESTree.TSConditionalType>) => boolean;
/**
 * Determine whether a conditional type has exact `false` then `true` branches.
 */
export declare const hasFalseTrueBranches: (node: Readonly<TSESTree.TSConditionalType>) => boolean;
/**
 * Extract `T` from `[T] extends [Target] ? true : false`.
 */
export declare const getTupleWrappedTypeGuardInput: (node: Readonly<TSESTree.TSConditionalType>, target: TupleWrappedGuardTarget) => TSESTree.TypeNode | undefined;
/**
 * Extract `T` from `0 extends 1 & T ? true : false`.
 */
export declare const getIsAnyTypeGuardInput: (node: Readonly<TSESTree.TSConditionalType>) => TSESTree.TypeNode | undefined;
/**
 * Extract `T` from `number extends T["length"] ? false : true`.
 */
export declare const getIsTupleTypeGuardInput: (node: Readonly<TSESTree.TSConditionalType>) => TSESTree.TypeNode | undefined;
export {};
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