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fix(base): wait for all chunked requests to arrive before continuing #4017

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merged 1 commit into from Dec 22, 2022
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fix(base): wait for all chunked requests to arrive before continuing #4017

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13 changes: 12 additions & 1 deletion packages/@sanity/base/src/preview/availability.ts
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@@ -1,6 +1,6 @@
/* eslint-disable max-nested-callbacks */
import {combineLatest, defer, from, Observable, of} from 'rxjs'
import {distinctUntilChanged, map, mergeMap, switchMap} from 'rxjs/operators'
import {distinctUntilChanged, map, mergeMap, reduce, switchMap} from 'rxjs/operators'
import shallowEquals from 'shallow-equals'
import {flatten, keyBy} from 'lodash'
import {getDraftId, getPublishedId} from '../util/draftUtils'
Expand Down Expand Up @@ -99,12 +99,23 @@ function chunkDocumentIds(documentIds: string[]): string[][] {
return chunks
}

/**
* Mutative concat
* @param array
* @param chunks
*/
function mutConcat<T>(array: T[], chunks: T[]) {
array.push(...chunks)
return array
}

const fetchDocumentReadability = debounceCollect(function fetchDocumentReadability(
args: string[][]
): Observable<DocumentAvailability[]> {
const uniqueIds = [...new Set(flatten(args))]
return from(chunkDocumentIds(uniqueIds)).pipe(
mergeMap(fetchDocumentReadabilityChunked, 10),
reduce(mutConcat, []),
map((res) => args.map(([id]) => res[uniqueIds.indexOf(id)]))
)
},
Expand Down