/**
 * @packageDocumentation
 * Utilities for detecting nodes that live inside `.filter(...)` callbacks.
 */
import { type TSESTree } from "@typescript-eslint/utils";
/**
 * Narrows call expressions to direct `.filter(...)` calls.
 */
export declare const isFilterCallExpression: (expression: Readonly<TSESTree.CallExpression>) => expression is TSESTree.CallExpression & {
    callee: TSESTree.MemberExpression & {
        computed: false;
        optional: false;
        property: TSESTree.Identifier;
    };
    optional: false;
};
/**
 * Extract the first callback argument from a direct `.filter(...)` call.
 *
 * @param expression - Candidate call expression to inspect.
 *
 * @returns Callback expression when the call is a supported `.filter(...)`
 *   invocation and the first argument is an arrow/function expression;
 *   otherwise `null`.
 */
export declare const getFilterCallbackFunctionArgument: (expression: Readonly<TSESTree.CallExpression>) => null | Readonly<TSESTree.ArrowFunctionExpression | TSESTree.FunctionExpression>;
/**
 * Structured match for `.filter(...)` calls with a single identifier parameter
 * arrow callback that uses an expression body.
 */
export type SingleParameterExpressionArrowFilterCallbackMatch = Readonly<{
    callback: TSESTree.ArrowFunctionExpression & {
        body: TSESTree.Expression;
        params: [TSESTree.Identifier];
    };
    parameter: TSESTree.Identifier;
}>;
/**
 * Extract a strict callback shape from direct `.filter(...)` calls.
 *
 * @param expression - Candidate call expression to inspect.
 *
 * @returns Structured callback match when supported; otherwise `null`.
 */
export declare const getSingleParameterExpressionArrowFilterCallback: (expression: Readonly<TSESTree.CallExpression>) => null | SingleParameterExpressionArrowFilterCallbackMatch;
/**
 * Checks whether a node appears inside a callback passed as the first argument
 * to a direct `.filter(...)` call.
 *
 * @param node - Node to inspect.
 *
 * @returns `true` when the node is inside a `.filter(...)` callback; otherwise
 *   `false`.
 */
export declare const isWithinFilterCallback: (node: Readonly<TSESTree.Node>) => boolean;
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