/**
 * Middleware stack — manages an ordered collection of named middleware.
 *
 * Middleware is sorted by priority (descending — higher priority runs first).
 * Supports adding, removing, and retrieving middleware by name.
 */
import type { MiddlewareDefinition, MiddlewareFn } from '../types/http.types.js';
export declare class MiddlewareStack {
    private readonly _entries;
    /** Add a middleware definition to the stack. */
    add(definition: MiddlewareDefinition): this;
    /** Remove a middleware by name. Returns true if removed. */
    remove(name: string): boolean;
    /** Check if a middleware with the given name exists. */
    has(name: string): boolean;
    /** Get all entries, sorted by priority descending (higher priority first). */
    entries(): readonly MiddlewareDefinition[];
    /**
     * Returns all middleware handlers in priority order,
     * ready to pass into composeMiddleware().
     */
    handlers(): MiddlewareFn[];
    /** Number of middleware in the stack. */
    get size(): number;
}
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