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useIsMutating.ts
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useIsMutating.ts
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import { readable } from 'svelte/store'
import type { Readable } from "svelte/store";
import { notifyManager, QueryClient } from '../queryCore/core'
import { useQueryClient } from '../queryClientProvider'
import type { MutationFilters } from '../queryCore/core/utils'
export default function useIsMutating(filters?: MutationFilters): Readable<number> {
const client: QueryClient = useQueryClient()
const cache = client.getMutationCache()
// isMutating is the prev value initialized on mount *
let isMutating = client.isMutating(filters)
const { subscribe } = readable(isMutating, set => {
return cache.subscribe(
notifyManager.batchCalls(() => {
const newIisMutating = client.isMutating(filters)
if (isMutating !== newIisMutating) {
// * and update with each change
isMutating = newIisMutating
set(isMutating)
}
}))
})
return { subscribe }
}