Tanstack Pacer

import { Debouncer } from '@tanstack/pacer'
const debouncer = new Debouncer(  (query: string) => fetchSearchResults(query),  {    wait: 300,            // ms of inactivity before execution    leading: false,       // Execute on leading edge (default: false)    trailing: true,       // Execute on trailing edge (default: true)    maxWait: 1000,        // Force execution after 1s of continuous calls    enabled: true,    onExecute: (result) => console.log(result),  })
debouncer.maybeExecute('search term')debouncer.cancel()debouncer.getExecutionCount()debouncer.setOptions({ wait: 500 }) // Dynamic reconfiguration

import { debounce } from '@tanstack/pacer'
const debouncedSearch = debounce(  (query: string) => fetchResults(query),  { wait: 300 })
debouncedSearch('term')debouncedSearch.cancel()

import {  useDebouncer,  useDebouncedCallback,  useDebouncedState,  useDebouncedValue,} from '@tanstack/react-pacer'
// Full debouncer instanceconst debouncer = useDebouncer(fn, { wait: 300 })
// Simple debounced functionconst debouncedFn = useDebouncedCallback(fn, { wait: 300 })
// Debounced state managementconst [debouncedValue, setValue] = useDebouncedState(initialValue, { wait: 300 })
// Debounced reactive valueconst debouncedValue = useDebouncedValue(reactiveValue, { wait: 300 })

import { Throttler } from '@tanstack/pacer'
const throttler = new Throttler(  (position: { x: number; y: number }) => updatePosition(position),  {    wait: 100,            // Minimum interval between executions    leading: true,        // Execute immediately on first call (default: true)    trailing: true,       // Execute after interval with last args (default: true)    enabled: true,    onExecute: (result) => console.log(result),  })
throttler.maybeExecute({ x: 100, y: 200 })throttler.cancel()

import {  useThrottler,  useThrottledCallback,  useThrottledState,  useThrottledValue,} from '@tanstack/react-pacer'
const throttledFn = useThrottledCallback(handleScroll, { wait: 100 })const [throttledPos, setPos] = useThrottledState({ x: 0, y: 0 }, { wait: 100 })

import { RateLimiter } from '@tanstack/pacer'
const limiter = new RateLimiter(  async (endpoint: string) => fetch(endpoint).then(r => r.json()),  {    limit: 10,            // Max executions per window    window: 60000,        // Time window in ms (60s)    enabled: true,    onExecute: (result) => console.log(result),    onReject: (...args) => console.warn('Rate limited:', args),  })
limiter.maybeExecute('/api/data')  // Rejected if limit exceededlimiter.getExecutionCount()limiter.getRejectionCount()

import {  useRateLimiter,  useRateLimitedCallback,  useRateLimitedState,  useRateLimitedValue,} from '@tanstack/react-pacer'
const rateLimitedFn = useRateLimitedCallback(apiCall, { limit: 5, window: 1000 })

import { Queue } from '@tanstack/pacer'
const queue = new Queue({  concurrency: 1,         // Max concurrent tasks  started: true,          // Start processing immediately})
queue.add(() => uploadFile(file1))queue.add(() => uploadFile(file2))
queue.start()queue.pause()queue.clear()queue.getSize()           // Pending countqueue.getPending()        // Currently executing count

import { Batcher } from '@tanstack/pacer'
const batcher = new Batcher(  (items: LogEntry[]) => sendBatchToServer(items),  {    maxSize: 50,          // Auto-flush at 50 items    wait: 1000,           // Auto-flush after 1s  })
batcher.add(logEntry)    // Accumulatesbatcher.flush()          // Manual flushbatcher.getSize()        // Current batch sizebatcher.clear()          // Discard batch

import { AsyncDebouncer, asyncDebounce, AsyncThrottler, asyncThrottle } from '@tanstack/pacer'
const asyncDebouncer = new AsyncDebouncer(  async (query: string) => {    const response = await fetch(`/api/search?q=${query}`)    return response.json()  },  { wait: 300 })
// React async hooksimport { useAsyncDebouncer, useAsyncThrottler } from '@tanstack/react-pacer'