How to use the scan function from rxjs

Find comprehensive JavaScript rxjs.scan code examples handpicked from public code repositorys.

cloudStorageDownload.js

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const downloadFiles$ = ({files, prefix, downloadDir, deleteAfterDownload}) => {
    return of(files).pipe(
        switchMap(files => of(...files)),
        mergeMap(file => downloadFile$({file, prefix, downloadDir, deleteAfterDownload}), CONCURRENT_FILE_DOWNLOAD),
        scan((currentProgress, fileProgress) => getProgress({
            files,
            currentProgress,
            fileProgress
        }), initialState(files))

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