Watch Throttled

import { watchThrottled } from '@vueuse/core'

watchThrottled(
  source,
  () => { console.log('changed!') },
  { throttle: 500 },
)

import { watchThrottled } from '@vueuse/core'

// Only invoke at the start of each throttle period
watchThrottled(source, callback, {
  throttle: 500,
  leading: true,
  trailing: false,
})

// Only invoke at the end of each throttle period
watchThrottled(source, callback, {
  throttle: 500,
  leading: false,
  trailing: true,
})

import { throttleFilter, watchWithFilter } from '@vueuse/core'

watchWithFilter(
  source,
  () => { console.log('changed!') },
  {
    eventFilter: throttleFilter(500),
  },
)

export interface WatchThrottledOptions<
  Immediate,
> extends WatchOptions<Immediate> {
  throttle?: MaybeRefOrGetter<number>
  trailing?: boolean
  leading?: boolean
}
export declare function watchThrottled<
  T,
  Immediate extends Readonly<boolean> = false,
>(
  source: WatchSource<T>,
  cb: WatchCallback<T, Immediate extends true ? T | undefined : T>,
  options?: WatchThrottledOptions<Immediate>,
): WatchHandle
export declare function watchThrottled<
  T extends Readonly<MultiWatchSources>,
  Immediate extends Readonly<boolean> = false,
>(
  sources: [...T],
  cb: WatchCallback<MapSources<T>, MapOldSources<T, Immediate>>,
  options?: WatchThrottledOptions<Immediate>,
): WatchHandle
export declare function watchThrottled<
  T extends object,
  Immediate extends Readonly<boolean> = false,
>(
  source: T,
  cb: WatchCallback<T, Immediate extends true ? T | undefined : T>,
  options?: WatchThrottledOptions<Immediate>,
): WatchHandle
/** @deprecated use `watchThrottled` instead */
export declare const throttledWatch: typeof watchThrottled