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Expects (encoder_characters)(stream).
(encoder_characters)(stream)
(d,v,i=0i=n=0)=>g=a=>=>g=a=>d[k=2**n-1]?g(a,n++):(i>7?0:v=v<<8|a.shift(i+=8),j=v>>(i-=n=-~Math.log2(d.length)=n)&2**n-1&k)?d[j-1]+g(a):a
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(d,v,i=0)=>g=a=>(i>7?0:v=v<<8|a.shift(i+=8),j=v>>(i-=n=-~Math.log2(d.length))&2**n-1)?d[j-1]+g(a):a
Try it online!
(d,v,i=n=0)=>g=a=>d[k=2**n-1]?g(a,n++):(i>7?0:v=v<<8|a.shift(i+=8),j=v>>(i-=n)&k)?d[j-1]+g(a):a
