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qwen/nodejs/node_modules/express-rate-limit/dist/index.d.ts
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qwen/nodejs/node_modules/express-rate-limit/dist/index.d.ts
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// Generated by dts-bundle-generator v7.0.0
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import { NextFunction, Request, RequestHandler, Response } from 'express';
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/**
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* Callback that fires when a client's hit counter is incremented.
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*
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* @param error {Error | undefined} - The error that occurred, if any.
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* @param totalHits {number} - The number of hits for that client so far.
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* @param resetTime {Date | undefined} - The time when the counter resets.
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*/
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export type IncrementCallback = (error: Error | undefined, totalHits: number, resetTime: Date | undefined) => void;
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/**
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* Method (in the form of middleware) to generate/retrieve a value based on the
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* incoming request.
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*
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* @param request {Request} - The Express request object.
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* @param response {Response} - The Express response object.
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*
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* @returns {T} - The value needed.
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*/
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export type ValueDeterminingMiddleware<T> = (request: Request, response: Response) => T | Promise<T>;
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/**
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* Express request handler that sends back a response when a client is
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* rate-limited.
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*
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* @param request {Request} - The Express request object.
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* @param response {Response} - The Express response object.
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* @param next {NextFunction} - The Express `next` function, can be called to skip responding.
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* @param optionsUsed {Options} - The options used to set up the middleware.
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*/
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export type RateLimitExceededEventHandler = (request: Request, response: Response, next: NextFunction, optionsUsed: Options) => void;
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/**
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* Event callback that is triggered on a client's first request that exceeds the limit
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* but not for subsequent requests. May be used for logging, etc. Should *not*
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* send a response.
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*
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* @param request {Request} - The Express request object.
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* @param response {Response} - The Express response object.
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* @param optionsUsed {Options} - The options used to set up the middleware.
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*/
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export type RateLimitReachedEventHandler = (request: Request, response: Response, optionsUsed: Options) => void;
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/**
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* Data returned from the `Store` when a client's hit counter is incremented.
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*
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* @property totalHits {number} - The number of hits for that client so far.
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* @property resetTime {Date | undefined} - The time when the counter resets.
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*/
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export type ClientRateLimitInfo = {
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totalHits: number;
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resetTime: Date | undefined;
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};
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export type IncrementResponse = ClientRateLimitInfo;
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/**
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* A modified Express request handler with the rate limit functions.
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*/
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export type RateLimitRequestHandler = RequestHandler & {
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/**
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* Method to reset a client's hit counter.
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*
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* @param key {string} - The identifier for a client.
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*/
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resetKey: (key: string) => void;
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/**
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* Method to fetch a client's hit count and reset time.
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*
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* @param key {string} - The identifier for a client.
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*
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* @returns {ClientRateLimitInfo} - The number of hits and reset time for that client.
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*/
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getKey?: (key: string) => Promise<ClientRateLimitInfo | undefined> | ClientRateLimitInfo | undefined;
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};
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/**
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* An interface that all hit counter stores must implement.
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*
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* @deprecated 6.x - Implement the `Store` interface instead.
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*/
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export type LegacyStore = {
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/**
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* Method to increment a client's hit counter.
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*
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* @param key {string} - The identifier for a client.
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* @param callback {IncrementCallback} - The callback to call once the counter is incremented.
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*/
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incr: (key: string, callback: IncrementCallback) => void;
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/**
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* Method to decrement a client's hit counter.
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*
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* @param key {string} - The identifier for a client.
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*/
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decrement: (key: string) => void;
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/**
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* Method to reset a client's hit counter.
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*
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* @param key {string} - The identifier for a client.
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*/
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resetKey: (key: string) => void;
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/**
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* Method to reset everyone's hit counter.
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*/
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resetAll?: () => void;
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};
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/**
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* An interface that all hit counter stores must implement.
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*/
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export type Store = {
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/**
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* Method that initializes the store, and has access to the options passed to
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* the middleware too.
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*
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* @param options {Options} - The options used to setup the middleware.
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*/
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init?: (options: Options) => void;
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/**
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* Method to fetch a client's hit count and reset time.
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*
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* @param key {string} - The identifier for a client.
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*
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* @returns {ClientRateLimitInfo} - The number of hits and reset time for that client.
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*/
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get?: (key: string) => Promise<ClientRateLimitInfo | undefined> | ClientRateLimitInfo | undefined;
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/**
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* Method to increment a client's hit counter.
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*
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* @param key {string} - The identifier for a client.
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*
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* @returns {IncrementResponse | undefined} - The number of hits and reset time for that client.
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*/
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increment: (key: string) => Promise<IncrementResponse> | IncrementResponse;
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/**
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* Method to decrement a client's hit counter.
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*
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* @param key {string} - The identifier for a client.
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*/
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decrement: (key: string) => Promise<void> | void;
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/**
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* Method to reset a client's hit counter.
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*
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* @param key {string} - The identifier for a client.
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*/
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resetKey: (key: string) => Promise<void> | void;
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/**
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* Method to reset everyone's hit counter.
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*/
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resetAll?: () => Promise<void> | void;
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/**
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* Method to shutdown the store, stop timers, and release all resources.
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*/
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shutdown?: () => Promise<void> | void;
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/**
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* Flag to indicate that keys incremented in one instance of this store can
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* not affect other instances. Typically false if a database is used, true for
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* MemoryStore.
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*
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* Used to help detect double-counting misconfigurations.
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*/
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localKeys?: boolean;
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/**
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* Optional value that the store prepends to keys
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*
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* Used by the double-count check to avoid false-positives when a key is counted twice, but with different prefixes
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*/
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prefix?: string;
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};
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export type DraftHeadersVersion = "draft-6" | "draft-7";
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/**
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* The configuration options for the rate limiter.
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*/
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export type Options = {
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/**
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* How long we should remember the requests.
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*
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* Defaults to `60000` ms (= 1 minute).
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*/
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windowMs: number;
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/**
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* The maximum number of connections to allow during the `window` before
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* rate limiting the client.
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*
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* Can be the limit itself as a number or express middleware that parses
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* the request and then figures out the limit.
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*
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* Defaults to `5`.
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*/
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max: number | ValueDeterminingMiddleware<number>;
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/**
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* The response body to send back when a client is rate limited.
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*
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* Defaults to `'Too many requests, please try again later.'`
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*/
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message: any | ValueDeterminingMiddleware<any>;
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/**
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* The HTTP status code to send back when a client is rate limited.
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*
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* Defaults to `HTTP 429 Too Many Requests` (RFC 6585).
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*/
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statusCode: number;
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/**
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* Whether to send `X-RateLimit-*` headers with the rate limit and the number
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* of requests.
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*
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* Defaults to `true` (for backward compatibility).
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*/
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legacyHeaders: boolean;
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/**
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* Whether to enable support for the standardized rate limit headers (`RateLimit-*`).
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*
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* Defaults to `false` (for backward compatibility, but its use is recommended).
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*/
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standardHeaders: boolean | DraftHeadersVersion;
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/**
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* The name of the property on the request object to store the rate limit info.
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*
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* Defaults to `rateLimit`.
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*/
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requestPropertyName: string;
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/**
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* If `true`, the library will (by default) skip all requests that have a 4XX
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* or 5XX status.
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*
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* Defaults to `false`.
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*/
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skipFailedRequests: boolean;
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/**
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* If `true`, the library will (by default) skip all requests that have a
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* status code less than 400.
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*
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* Defaults to `false`.
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*/
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skipSuccessfulRequests: boolean;
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/**
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* Method to generate custom identifiers for clients.
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*
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* By default, the client's IP address is used.
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*/
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keyGenerator: ValueDeterminingMiddleware<string>;
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/**
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* Express request handler that sends back a response when a client is
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* rate-limited.
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*
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* By default, sends back the `statusCode` and `message` set via the options.
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*/
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handler: RateLimitExceededEventHandler;
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/**
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* Express request handler that sends back a response when a client has
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* reached their rate limit, and will be rate limited on their next request.
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*
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* @deprecated 6.x - Please use a custom `handler` that checks the number of
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* hits instead.
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*/
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onLimitReached: RateLimitReachedEventHandler;
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/**
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* Method (in the form of middleware) to determine whether or not this request
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* counts towards a client's quota.
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*
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* By default, skips no requests.
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*/
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skip: ValueDeterminingMiddleware<boolean>;
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/**
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* Method to determine whether or not the request counts as 'succesful'. Used
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* when either `skipSuccessfulRequests` or `skipFailedRequests` is set to true.
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*
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* By default, requests with a response status code less than 400 are considered
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* successful.
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*/
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requestWasSuccessful: ValueDeterminingMiddleware<boolean>;
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/**
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* The `Store` to use to store the hit count for each client.
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*
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* By default, the built-in `MemoryStore` will be used.
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*/
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store: Store | LegacyStore;
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/**
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* Whether or not the validation checks should run.
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*/
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validate: boolean;
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/**
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* Whether to send `X-RateLimit-*` headers with the rate limit and the number
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* of requests.
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*
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* @deprecated 6.x - This option was renamed to `legacyHeaders`.
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*/
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headers?: boolean;
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/**
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* Whether to send `RateLimit-*` headers with the rate limit and the number
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* of requests.
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*
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* @deprecated 6.x - This option was renamed to `standardHeaders`.
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*/
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draft_polli_ratelimit_headers?: boolean;
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};
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/**
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* The extended request object that includes information about the client's
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* rate limit.
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*/
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export type AugmentedRequest = Request & {
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[key: string]: RateLimitInfo;
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};
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/**
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* The rate limit related information for each client included in the
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* Express request object.
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*/
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export type RateLimitInfo = {
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limit: number;
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current: number;
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remaining: number;
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resetTime: Date | undefined;
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};
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/**
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*
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* Create an instance of IP rate-limiting middleware for Express.
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*
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* @param passedOptions {Options} - Options to configure the rate limiter.
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*
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* @returns {RateLimitRequestHandler} - The middleware that rate-limits clients based on your configuration.
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*
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* @public
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*/
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export declare const rateLimit: (passedOptions?: Partial<Options>) => RateLimitRequestHandler;
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/**
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* A `Store` that stores the hit count for each client in memory.
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*
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* @public
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*/
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export declare class MemoryStore implements Store {
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/**
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* The duration of time before which all hit counts are reset (in milliseconds).
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*/
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windowMs: number;
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/**
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* The map that stores the number of hits for each client in memory.
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*/
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hits: {
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[key: string]: number | undefined;
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};
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/**
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* The time at which all hit counts will be reset.
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*/
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resetTime: Date;
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/**
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* Reference to the active timer.
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*/
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interval?: NodeJS.Timer;
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/**
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* Confirmation that the keys incremented in once instance of MemoryStore
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* cannot affect other instances.
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*/
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localKeys: boolean;
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/**
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* Method that initializes the store.
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*
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* @param options {Options} - The options used to setup the middleware.
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*/
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init(options: Options): void;
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/**
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* Method to fetch a client's hit count and reset time.
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*
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* @param key {string} - The identifier for a client.
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*
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* @returns {ClientRateLimitInfo | undefined} - The number of hits and reset time for that client.
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*
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* @public
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*/
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get(key: string): Promise<ClientRateLimitInfo | undefined>;
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/**
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* Method to increment a client's hit counter.
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*
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* @param key {string} - The identifier for a client.
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*
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* @returns {ClientRateLimitInfo} - The number of hits and reset time for that client.
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*
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* @public
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*/
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increment(key: string): Promise<ClientRateLimitInfo>;
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/**
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* Method to decrement a client's hit counter.
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*
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* @param key {string} - The identifier for a client.
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*
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* @public
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*/
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decrement(key: string): Promise<void>;
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/**
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* Method to reset a client's hit counter.
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*
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* @param key {string} - The identifier for a client.
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*
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* @public
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*/
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resetKey(key: string): Promise<void>;
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/**
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* Method to reset everyone's hit counter.
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*
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* @public
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*/
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resetAll(): Promise<void>;
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/**
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* Method to stop the timer (if currently running) and prevent any memory
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* leaks.
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*
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* @public
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*/
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shutdown(): void;
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}
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export {
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rateLimit as default,
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};
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export {};
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||||
Reference in New Issue
Block a user