Findings 5-8 of the dedup audit:
- F5 byte formatters: appUpdaterHelpers.fmtBytes + ZipDownloadOverlay
.formatMB route through the existing formatBytes; a new formatMb
(always-MB) backs playlistDetailHelpers.formatSize, AlbumHeader and
the 4 inline DeviceSyncPreSyncModal expressions. SongInfoModal.format
Size is intentionally left — it uses decimal (1e6) divisors, not 1024.
- F6 sanitizeHtml: extracted to utils/sanitizeHtml.ts; AlbumHeader,
ComposerDetail and the (now-empty, deleted) artistDetailHelpers use it
directly. nowPlayingHelpers keeps its own export but now delegates to
the shared sanitiser and only adds its trailing-link strip on top.
- F7 album duration: BecauseYouLikeRail's formatAlbumDuration drops in
favour of the shared formatHumanHoursMinutes. Behaviour note: total
minutes now floor instead of round (<=1 min display difference,
matches every other caller).
- F8 clock time: extracted to utils/format/formatClockTime.ts;
PlaybackDelayModal + QueueHeader use it (toLocaleTimeString and
Intl.DateTimeFormat produced identical output).
Behaviour preserved except the two explicitly noted divergences (F7
round->floor; F5 appUpdater/Zip now show GB above 1 GB instead of a
large MB number).
ZIP downloads (PlaylistDetail, Albums, NewReleases, RandomAlbums) now use
invoke('download_zip') via Rust streaming instead of fetch+blob+arrayBuffer,
eliminating JS heap saturation on large files. Progress shown in ZipDownloadOverlay.
Offline cache downloads (600+ songs) no longer freeze the UI: transient job
state moved to a separate non-persisted offlineJobStore, reducing localStorage
writes from ~1200 down to 2 for an entire download. Also adds playlist offline
toggle — clicking the cache button when already cached removes it from cache.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>