Packed Quine in JavaScript

pack-quine.js

eval(s=`
C=(s,u)=>{
  p={};
  for(j=2;j<=s.length/2;j++)
    with(s)
      for(k=0,q=p[r=slice(0,j)]=[];k=indexOf(r,j+k),~k;)
        q.push(k);
  r=(k=Object.keys(p))[(d=k.map(r=>(r.length-1)*(p[r].length-1)-1)).indexOf(v=Math.max.apply(1,d))];
  if(v<3)return{t:s,c:''};
  for(j=126;u.has(c=String.fromCharCode(j));j--);
  u.add(c);
  return{
    t:s.split(r).join(c)+c+r,
    c,
  };
};
S=(s)=>{
  y='';
  u=s.split('').reduce((u,c)=>u.add(c),new Set);
  for(i=0;i<s.length/2;i++)
    with(C(s.slice(i),u))
      s=s.slice(0,i)+t,y=c+y;
  return{s,y};
};
E=(s)=>s.replace(/[\\x24\\x5c\\x60]/g,'\\\\\$&');
with(S(\`eval(s=\\\`\${E(s)}\\\`)\`.replace(/^\\s+|\\n/mg,'')))
  console.log(\`s=\\\`\${E(s)}\\\`;for(c of\\\`\${E(y)}\\\`)with(s.split(c))s=join(pop());eval(s)\`);
`)

packed-quine.js

s=`z=\`C=_,uZ{p={YXj=2;j<=WV/2;j++U_)Xk=0,q=p[r=T0,j)]=[];k=indexOf(r,j+k),~k;)q.push(kRr=(k=Object.keys(pQ[(d=k.map(r=>(r.V-1)*(p[r].V-1)-1Q.indexOf(v=Math.max.apPy(1,dQ];if(v<3)Nt:s,c:''YXj=126;u.has(c=String.fromCharCode(j)Rj--Ru.add(cRNt:WLr).join(c)+c+r,c,YYS=_Z{y='';u=WL'').reduK(u,cZu.add(c),new SetRXi=0;i<WV/2;i++U(C_.Ti),uQs=WT0,i)+t,y=c+y;Ns,yYYE=_ZWrePaK/[\\\\x24\\\\x5c\\\\x60]/g,'\\\\\\\\\\\$&'Rwith(S(\\\`z=\\\\\\\`\\\${E_)}\\\\\\\`)\\\`.rePaK/^\\\\s+|\\\\n/mg,''Q)console.log(\\\`s=\\\\\\\`\\\${E_)}\\\\\\\`;Xc of\\\\\\\`\\\${E(y)}\\\\\\\`U_.LcQs=join(pop()Rz)\\\`R\`)zeval__(sZ)=>Y};Xfor(Ws.VlengthU)withTsliKR);Q))PplNreturn{LsPit(Kce(`;for(c of`KLNPQRTUVWXYZ_z`)with(s.split(c))s=join(pop());eval(s)