@rescale/nemo/dist/index.d.ts

A middleware composition library for Next.js applications that allows you to organize and chain middleware functions based on URL patterns.

import { M as MiddlewareConfig, G as GlobalMiddlewareConfig, N as NemoConfig, a as NextMiddlewareResult } from './types--9jM0uBl.js';
export { C as ChainType, E as ErrorHandler, e as MiddlewareChain, f as MiddlewareConfigValue, d as MiddlewareContext, g as MiddlewareMetadata, b as NemoEvent, c as NextMiddleware, h as NextMiddlewareWithMeta, S as Storage } from './types--9jM0uBl.js';
import { NextRequest, NextFetchEvent } from 'next/server';
export { NemoMiddlewareError } from './errors.js';
export { areResponsesEqual } from './utils.js';
import 'next/dist/server/after/builtin-request-context';
import './storage/adapter.js';

type NextMiddlewareFunction = (request: NextRequest, event: NextFetchEvent) => Promise<NextMiddlewareResult>;
declare class NEMO {
    private readonly config;
    private readonly middlewares;
    private readonly globalMiddleware?;
    private readonly logger;
    private readonly storage;
    private readonly storageFactory;
    /**
     * NEMO Middleware/Proxy
     * Compatible with both Next.js <16 (middleware.ts) and Next.js 16+ (proxy.ts)
     * @param middlewares - Middleware configuration
     * @param globalMiddleware - Global middleware configuration
     * @param config - NEMO configuration
     */
    constructor(middlewares: MiddlewareConfig, globalMiddleware?: GlobalMiddlewareConfig, config?: NemoConfig);
    /**
     * Computes if the given path matches the given pattern using path-to-regexp
     * @param pattern - The pattern to match
     * @param path - The path to check
     * @param exact - Whether to match exactly or as a prefix
     * @returns Whether the path matches the pattern
     */
    private computePathMatch;
    /**
     * Porównuje początkowe i końcowe nagłówki i zwraca różnicę
     * @param initialHeaders - Początkowe nagłówki żądania
     * @param finalHeaders - Końcowe nagłówki żądania
     * @returns Obiekt zawierający nowe i zmodyfikowane nagłówki
     */
    private getHeadersDiff;
    /**
     * Attaches metadata to the given middleware function.
     * @param middleware - The middleware function to attach metadata to.
     * @param metadata - The metadata to attach.
     * @returns The middleware function with attached metadata.
     */
    private attachMetadata;
    /**
     * Creates a full pattern path by combining base path and key
     * @param key - The route key
     * @param basePath - The base path
     * @returns The combined full pattern
     */
    private createFullPattern;
    /**
     * Propagate the queue of middleware functions for the given request.
     * @param request - The request to propagate the queue for.
     * @returns The queue of middleware functions.
     */
    private propagateQueue;
    /**
     * Process the queue of middleware functions.
     * @param queue - The queue of middleware functions to process.
     * @param request - The request to process the queue for.
     * @param event - The fetch event to process the queue for.
     * @returns The result of the middleware processing.
     */
    private processQueue;
    private initializeTimingTracking;
    private shouldSkipMiddleware;
    private handleChainTransition;
    private processMiddlewareResult;
    private executeMiddlewareChain;
    private executeMiddleware;
    private logMiddlewareExecution;
    private isTerminatingResult;
    private applyHeadersToRequest;
    private updateTimingStats;
    private handleMiddlewareError;
    private logFinalTiming;
    private createFinalResponse;
    /**
     * Middleware/Proxy handler
     * Compatible with both Next.js <16 (middleware.ts) and Next.js 16+ (proxy.ts)
     * @param request - The request to process the middleware for.
     * @param event - The fetch event to process the middleware for.
     * @returns The result of the middleware processing.
     */
    middleware: NextMiddlewareFunction;
}
/**
 * @deprecated This function is going to be deprecated as it's named just like many other packages and can cause conflicts. Use `new NEMO()` instead.
 *
 * Example for Next.js 16+: `export const proxy = createNEMO(middlewares, globalMiddleware, config)`
 * Example for Next.js <16: `export const middleware = createNEMO(middlewares, globalMiddleware, config)`
 *
 * @param middlewares - Middleware configuration
 * @param globalMiddleware - Global middleware configuration
 * @returns NextMiddleware (compatible with both Next.js <16 NextMiddleware and Next.js 16+ NextProxy)
 *
 * @example
 * ```ts
 * import { createNEMO } from "@rescale/nemo";
 *
 * // Next.js 16+: export const proxy = createNEMO({...})
 * // Next.js <16: export const middleware = createNEMO({...})
 * const proxy = createNEMO({
 *  "/api/:path*": (req, event) => {
 *    console.log("API request:", req.nextUrl.pathname);
 *  },
 * });
 * ```
 */
declare function createMiddleware(middlewares: MiddlewareConfig, globalMiddleware?: GlobalMiddlewareConfig, config?: NemoConfig): NextMiddlewareFunction;
/**
 * Creates a new NEMO instance with the given middlewares and optional configurations.
 *
 * Compatible with both Next.js <16 (middleware.ts) and Next.js 16+ (proxy.ts).
 *
 * @param middlewares - Middleware configuration
 * @param globalMiddleware - Global middleware configuration
 * @param config - Optional Nemo configuration
 * @returns NextMiddleware (compatible with both Next.js <16 NextMiddleware and Next.js 16+ NextProxy)
 *
 * @example
 * ```ts
 * import { createNEMO } from "@rescale/nemo";
 *
 * // Next.js 16+: export const proxy = createNEMO({...})
 * // Next.js <16: export const middleware = createNEMO({...})
 * const proxy = createNEMO({
 *  "/api/:path*": (req, event) => {
 *    console.log("API request:", req.nextUrl.pathname);
 *  },
 * });
 * ```
 */
declare function createNEMO(middlewares: MiddlewareConfig, globalMiddleware?: GlobalMiddlewareConfig, config?: NemoConfig): NextMiddlewareFunction;

export { GlobalMiddlewareConfig, MiddlewareConfig, NEMO, NemoConfig, NextMiddlewareResult, createMiddleware, createNEMO };