JS1k: The JavaScript code golfing competition

for(_='=(Z48Y64>X*gV)+U(1OinN)/Lc.Kt/Js(H*HJ10G-1e4,FatE3216t%>>)-Hg*r.10299eTo(r1rocessidth1)),Kstroke(>^(2^gU<?..heightMEh.abHg*random(Style="hsl	O-J%=>{for(i=0/(.2+UasN(g))**-+*))*s18*220|O&t6)2UHH6))
t=0,WZKw=a.wL2,BZc=aL2,KtranslEe(W,B),s=sN,A=new AudioContext,S=A.creEeScriptPor(20Y,0,,S.connect(A.destNEion),S.onaudiopZa;i-20Y;(x=a.outputBuffer.getChannelDEa(0))[i++]=2*(g=H(t+=2/Ye3)%12&(441-2**(t&7*~~8L12))&/2+(Y>X(v=H439*1|J5&8LO+(J8>1?1:J8%)U?.2:0)444*4(v-1.3+2:.8H223:.6H3764<?.1:.25s3*438|J41*3UX(.7*HO/1*1.5U1.533&t&5*443)O-J%1(J%L5+x[i-1]/4);}),setInterval((),KfillRect(FF2e4,2e4fill	a("+380VV+",50%,"+9V+"%,0.5)";KbegNPEh(mov=3*W
,r2Z-300G)&r18V|g)^5*W**1.3
>>(g*r1*.15*O0+~)lN7V**(9*~~gG1,r2g**XY?-2*:1g*7**H.1*t2lNeWZ3+2VL(2.2+Hr-Hr2+1.6)(	("+180*+",77%,66%)",i<3*W*(J<1?J:;i++);KrotEe(33)},15)';G=/[^ -DIMP-TW[-~]/.exec(_);)with(_.split(G))_=join(shift());eval(_)

Zm9yKF89Jz0oWjQ4WTY0PlgqZ1YpK1UoMU9pbk4pL0xjLkt0L0pzKEgqSEoxMEctMWU0LEZhdEUzMh8xNh50JR0+Ph0cKS1IZypyGy4xMDI5ORplVG8ocjEZcm9jZXNzGGlkdGgXMSkWKSxLFRVzdHJva2UUKB0TEx8+HhJeKDJeZ1URHzwePy4QLmhlaWdodA9NRWguDg5hYkhnDCoOcmFuZG9tKAtTdHlsZT0iaHNsCU8tSh4lFgg9Pntmb3IoaT0wBy8oLjIrHRZVEwYOYXNOKGcpBSkqBCotGisaKgUpKQMqcxMxOCoyMjB8TyZ0BBM2KRwyVUgCCwRINgspKQF0PTAsV1pLdxc9YS53F0wyLEJaYw89YQ9MMixLdHJhbnNsRWUoVyxCKSxzPQ5zTixBPW5ldyBBdWRpb0NvbnRleHQsUz1BLmNyZUVlU2NyaXB0UBhvcigyMFksMCwWLFMuY29ubmVjdChBLmRlc3RORWlvbiksUy5vbmF1ZGlvcBhaYQc7aS0yMFk7KHg9YS5vdXRwdXRCdWZmZXIuZ2V0Q2hhbm5lbERFYSgwKSlbaSsrXT0yKihnPUgodCs9Mi9ZZTMpJTEyJig0NDEtEgQyKioodCY3Kn5+EzhMMTIpBBMeKSYdHwQILzIrKFk+HVgeBCh2PUg0MzkqHTF8SjUmHThMTysoSjg+MT8xOko4JRYpVRI/LjI6MCkCNDQ0Kh00BCh2LR0xBC4zKxMQMjouOARIMjIGEDM6LjYESDM3BjY0PB8/LjE6LjI1BHMTMyo0Mzh8SjQcMSozVRNYHwQoLjcqSE8cFi8dMSoxLjVVMS41AjMzJnQmHTUqNDQzKQRPLUofJTEEKEofJRZMNSt4W2ktMV0vNCk7fSksc2V0SW50ZXJ2YWwoKCkHLEtmaWxsUmVjdChGRjJlNCwyZTQVZmlsbAlhKCIrMzgwVlYrIiw1MCUsIis5VisiJSwwLjUpIjtLYmVnTlBFaCgVbW92GT0zKlcBLHIyWi0zMDBHKSZyMRw4VnxnKV41KlcqDAQqMS4zAT4+KGcqcjEqLjE1BCpPMCt+BSkVbE4ZETdWKiooOSp+fmcEDEcbMQMscjIRZyoqE1hZPy0yKgg6MQRnKjcqDCpILjEqdBsyAxVsTmVXF1ozKzJWTCgyLjIrSHIWLUhyMisxLjYpFCgUCSgiKzE4MCoFKyIsNzclLDY2JSkiLGk8MypXKihKHjwxP0oeOhY7aSsrKTtLcm90RWUoMzMpfSwxNSknO0c9L1teIC1ESU1QLVRXWy1+XS8uZXhlYyhfKTspd2l0aChfLnNwbGl0KEcpKV89am9pbihzaGlmdCgpKTtldmFsKF8p

t = 0,
W=(c.width=a.width)/2,
H=(c.height=a.height)/2,
c.translate(W, H),
s = Math.sin,
r = Math.random,
A = new AudioContext,
S = A.createScriptProcessor(2048,0,1),
S.connect(A.destination),
S.onaudioprocess = (e) => {
    for(i=0;i-2048;
      (x=e.outputBuffer.getChannelData(0))[i++] =
        2*(g=s((t+=2/48e3)%12&(441-(t%32>16)*2**(t&7*~~(t%8)/12))*(t%16)&t%32)*(1-t/16%1)/2+
        (48>t%64>16)*(v=s(439*t%1|(t/5&t%8))/(1+(t/8>1?1:t/8%1)))+
        (t%32>16?.2:0)*s(220*(t%18)|((t&1)*(t%6))>>(t%2))+
        s(444*t%4)*(v-t%1)*.3+
        (t%32<16?.2:.8)*s(22/(.2+t%1))+
        (t%32<16?.3:.6)*s(37/(.2+t%1))+
        (t%64<32?.1:.25)*s(438*(t%3)|(t/4)>>t%1*3)+
        (t%64>32)*(.7*s(1.5*((1>>t%1)/t%1))+
                   1.5*s(220*(t%18)|((t&1)*(t%6))>>(t%2))+
                   s((33&t)&443*(t%5))
                 )*(1-t/32%1)*(t/32%1))/5+x[i-1]/4
    );
},
setInterval(() => {
    for(i=0,
      c.fillRect(-1e4,-1e4,2e4,2e4),
      c.fillStyle='hsla('+380*g*g+',50%,'+~~9*g+'%,'+.5+')';

      c.beginPath(),
      c.moveTo(
        r1=W*(3)*Math.random()*s(6*Math.random()),
        r2=(-300*s(t/10)&r1>>t%8*g|g)^5*W*Math.abs(g)**1.3*Math.random()*s(6*Math.random())>>(g*r1*.15)**(10+~Math.asin(g))
      ),
      c.lineTo(
        r1^(2^g)+7*(g**(9*~~g))*Math.abs(g*s(t/10)-s(g*r1*-.10299 +.10299 *Math.asin(g))),
        r2^(2^g)+7*(g**(t%64>48?-2*(1-t/16%1):1)*g)*Math.abs(g*s(t*.1)-s(g*r2*-.10299 +.10299 *Math.asin(g)))
      ),
      c.lineWidth = (3+2*g)/(2.2+s(r1)-s(r2+1.6)),
      c.stroke(),
      c.strokeStyle='hsl('+180*Math.asin(g)+',77%,66%)',
      i<(~~3*W*(t/16<1?t/16:1));
      i++
    );
    c.rotate(33)
}, 15)