import { TSESTree, AST_NODE_TYPES } from '@typescript-eslint/utils';
import { AnyFunction, AnyFunctionBody, Scope, GeneratorFunction, NamedFunction, WithTypeParameters } from './config';
export declare class Guard {
    isTsx: Scope['isTsx'];
    options: Scope['options'];
    sourceCode: Scope['sourceCode'];
    constructor(scope: Scope);
    isAnyFunction(value: TSESTree.Node): value is AnyFunction;
    isReturnStatement(value: unknown): value is TSESTree.ReturnStatement;
    isBlockStatementWithSingleReturn(body: AnyFunctionBody): body is TSESTree.BlockStatement & {
        body: [TSESTree.ReturnStatement & {
            argument: TSESTree.Expression;
        }];
    };
    hasImplicitReturn(body: AnyFunctionBody): body is Exclude<AnyFunctionBody, AST_NODE_TYPES.BlockStatement>;
    returnsImmediately(fn: AnyFunction): boolean;
    isExportedAsNamedExport(node: AnyFunction): boolean;
    getPreviousNode(fn: AnyFunction): TSESTree.Node | null;
    isOverloadedFunction(fn: AnyFunction): boolean;
    hasTypeParameters<T extends AnyFunction>(fn: T): fn is WithTypeParameters<T>;
    isAsyncFunction(node: AnyFunction): boolean;
    isGeneratorFunction(fn: AnyFunction): fn is GeneratorFunction;
    isAssertionFunction<T extends AnyFunction>(fn: T): fn is T & {
        returnType: TSESTree.TSTypeAnnotation;
    };
    containsToken(type: string, value: string, node: TSESTree.Node): boolean;
    containsSuper(node: TSESTree.Node): boolean;
    containsThis(node: TSESTree.Node): boolean;
    containsThisDirectly(node: TSESTree.Node): boolean;
    containsArguments(node: TSESTree.Node): boolean;
    hasThisParameter(fn: AnyFunction): boolean;
    containsTokenSequence(sequence: [string, string][], node: TSESTree.Node): boolean;
    containsNewDotTarget(node: TSESTree.Node): boolean;
    isPrototypeAssignment(node: AnyFunction): boolean;
    isWithinClassBody(node: TSESTree.Node): boolean;
    isNamedFunction(fn: AnyFunction): fn is NamedFunction;
    isNamedFunctionExpression(fn: AnyFunction): fn is NamedFunction & TSESTree.FunctionExpression;
    isNamedFunctionDeclaration(fn: AnyFunction): fn is NamedFunction & TSESTree.FunctionDeclaration;
    hasNameAndIsExportedAsDefaultExport(fn: AnyFunction): fn is NamedFunction;
    isIgnored(fn: AnyFunction): boolean;
    isObjectProperty(fn: AnyFunction): boolean;
    isSafeTransformation(fn: TSESTree.Node): fn is AnyFunction;
}