burakuro-js

Extra JavaScript for the cytu.be channel burakuro.

File	What it is
burakuro-extra.js	The WHOLE channel script. cytu.be loads it from Channel settings → General settings → External Javascript: https://nostramadeus.github.io/burakuro-js/burakuro-extra.js. Built by tools/build.mjs.
channel-js.js	What goes in Channel settings → Edit → JavaScript: only a pointer comment.
sounds/	Sound files for the sound emotes (Japanese voice clips, 1 to 4 s each).
emotes/	Pictures for the 10 Black Clover emotes the sound names borrow.
backup/	The channel JavaScript and CSS as they were live on 2026-11-07. Paste the JS back into Edit → JavaScript (and clear External Javascript) to undo.

What the script does

• Clock above the chat (local time and UTC), favicon, Ctrl+A (select chat line), Ctrl+S (wrap in a spoiler).
• Playlist start times: every queued video shows the clock time it will start.
• ”/” emote dropdown: typing /no opens a picture list of matching emotes; arrow keys + Enter pick one.
• Sound emotes: posting a sound name (for example /yamitakeabreaksound) shows the borrowed emote picture with a gold border and plays the clip for everyone. The “🔊 Sounds” button next to the emote button lists every sound emote (click a name to put it in the chat line, ▶ to hear it yourself) and turns sounds on or off / sets the volume (saved per browser).

Sounds

Type in chat	Picture	Sound
/doroclapsound	/doroclap	clapping
/laughsound	/laugh	laugh
/yamitakeabreaksound	/yamitakeabreak	Yami: “You look like you need a break”
/yamisurpassyourlimitssound	/yamisurpassyourlimits	Yami: “You’ve gotta break past your limits, that’s the only way!”
/yamilaughwahahasound	/yamilaughwahaha	Yami: “Wahahaha! What a blast!”
/astanevergivingupismymagicsound	/astanevergivingupismymagic	Asta: “I’ll never give up!”
/yunorepaidmydebtsound	/yunorepaidmydebt	Yuno: “I thought I’d finally returned the favor”
/lucklooksfunsound	/lucklooksfun	Luck: “Don’t finish yet, I’m having fun!”
/charmyimhungrysound	/charmyimhungry	Charmy: “I… I’m so hungry… Can’t move…”
/vanessaletsgodrinkingsound	/vanessaletsgodrinking	Vanessa: “Let’s have a drink!”
/mereoleonaleaveittomesound	/mereoleonaleaveittome	Mereoleona: “Leave it to me, Wizard King!”
/magnanotbadsound	/magnanotbad	Magna: “So cool!”
/charlottebadumpheartbeatsound	/charlottescreaming	Charlotte: “Ba-dump” (heartbeat)
/charlotteyyyamisound	/charlotteyamiwallpin	Charlotte: “Y-Y-Yami?!”

Adding a sound

1. Put the mp3 in sounds/.
2. Add one entry to the SOUNDS list in tools/build.mjs, run node tools/build.mjs, commit, push.

Tests

node tests/load-smoke.test.mjs (whole script loads, every part starts) and node tests/sound-play.test.mjs (sound play rules). Both use jsdom.

The “/” dropdown and sound emotes code comes from the wideamari channel script (https://github.com/Nostramadeus/wideamari-js); the playlist start times are “cytube times” by nuui and others.