Installation of the [npm package](https://npmjs.org/package/@vates/disposable):
```
> npm install --save @vates/disposable
```
## Usage
This library contains utilities for disposables as defined by the [`promise-toolbox` library](https://github.com/JsCommunity/promise-toolbox#resource-management).
### `deduped(fn, keyFn)`
Creates a new function that wraps `fn` and instead of creating a new disposables at each call, returns copies of the same one when `keyFn` returns the same keys.
Those copies contains the same value and can be disposed independently, the source disposable will only be disposed when all copies are disposed.
`keyFn` is called with the same context and arguments as the wrapping function and must returns an array of keys which will be used to identify which disposables should be grouped together.
```js
import { deduped } from '@vates/disposable/deduped'
// the connection with the passed host will be established once at the first call, then, it will be shared with the next calls
const getConnection = deduped(async function (host)) {
const connection = new Connection(host)
return new Disposabe(connection, () => connection.close())
}, host => [host])
```
### `debounceResource(disposable, delay)`
Creates a new disposable with the same value and with a delayed disposer.
On calling this disposer, the source disposable will be disposed when the `delay` is passed.
```js
import { createDebounceResource } from '@vates/disposable/debounceResource'
const debounceResource = createDebounceResource()
// it will wait for 10 seconds before calling the disposer
