v1.4.0 — Smart Playback

Smart autoplay engine, extended queue operations, DSP presets, 24/7 mode, synced lyrics, and UI helpers.

Released 2026-08-01 · npm install yukumo@1.4.0

Added

Smart Autoplay Engine — setAutoplay(enabled, fetcher?), isAutoplayEnabled(), and the autoplayTrackAdded event on recommendation enqueues.
Extended Queue Operations — Queue.swap(indexA, indexB), Queue.skipTo(index), Queue.removeRange(start, count), Queue.clearExceptCurrent().
Audio DSP Presets — setSlowedReverb(), set3DAudio(), setPitchShift(), setVoiceIsolation(), and a global custom preset registry (FilterChain.registerPreset() / applyPreset()).
Smart Voice Channel Behaviors — 24/7 mode (stayInVc) and the empty-VC monitor (setVcMemberCount()) with configurable auto-pause and auto-disconnect timeouts.
Synced Lyrics & SponsorBlock — getSyncedLyrics() via LRCLIB with the parseLrc() timestamp parser; SponsorBlockClient segment auto-skip.
DX & UI Helpers — getProgressBar(), formatDuration(), createQueueEmbedData(), and MiddlewareRegistry interceptor hooks (useBeforeTrackStart).

Voice connection handshake race: added the waitForVoiceReady() promise.
Session resumption on WS reconnect: re-sends OP4 voice credentials and player states.
Auto-reconnect on Discord voice close codes 4009 / 4015 (WebSocketClosedEvent).
Voice endpoint handling: active endpoint preserved when null endpoints arrive during Discord region failovers.