import type { Rule } from 'eslint';
import type estree from 'estree';
import type { RulesMeta } from '@eslint/core';
/**
 * Checks whether the declaration looks somewhat like `<id> = express()`
 * and returns `<id>` if it matches.
 */
export declare function attemptFindAppInstantiation(varDecl: estree.VariableDeclarator, context: Rule.RuleContext): estree.Identifier | undefined;
/**
 * Checks whether the function injects an instantiated app and is exported like `module.exports = function(app) {}`
 * or `module.exports.property = function(app) {}`, and returns app if it matches.
 */
export declare function attemptFindAppInjection(functionDef: estree.Function, context: Rule.RuleContext, node: estree.Node): estree.Identifier | undefined;
/**
 * Checks whether the expression looks somewhat like `app.use(m1, [m2, m3], ..., mN)`,
 * where one of `mK`-nodes satisfies the given predicate.
 */
export declare function isUsingMiddleware(context: Rule.RuleContext, callExpression: estree.CallExpression, app: estree.Identifier, middlewareNodePredicate: (n: estree.Node) => boolean): boolean;
/**
 * Checks whether a node looks somewhat like `require('m')()` for
 * some middleware `m` from the list of middlewares.
 */
export declare function isMiddlewareInstance(context: Rule.RuleContext, middlewares: string[], n: estree.Node): boolean;
/**
 * Rule factory for detecting sensitive settings that are passed to
 * middlewares eventually used by Express.js applications:
 *
 * app.use(
 *   middleware(settings)
 * )
 *
 * or
 *
 * app.use(
 *   middleware.method(settings)
 * )
 *
 * @param sensitivePropertyFinder - a function looking for a sensitive setting on a middleware call
 * @param message - the reported message when an issue is raised
 * @param meta - the rule metadata
 * @returns a rule module that raises issues when a sensitive property is found
 */
export declare function SensitiveMiddlewarePropertyRule(sensitivePropertyFinder: (context: Rule.RuleContext, middlewareCall: estree.CallExpression) => estree.Property[], message: string, meta?: RulesMeta): Rule.RuleModule;