Dense Binary Text Encoding

dbte.js

// Dense Binary Text Encoding
// Encode each of the 26 letter as 1 to 26, in binary.
// Encode spaces as 0.

const ASCII_A = 65;
const ENCODED_SPACE = 0;

function dbte(str) {
  const digits = str.toUpperCase().split('');
  const encoding = digits.reduce((obj, d, i) => {
    obj.push(d === ' ' ? ENCODED_SPACE : d.charCodeAt(0) - ASCII_A);
    return obj;
  }, []);
  return encoding.map(d => {
  	const bin = d.toString(2);
    return '0'.repeat(5 - bin.length) + bin;
  });
}

const encoded = dbte('fidelity to purpose').join(' ');