Prints block letters

bored.js

const letters = {
  a: [
    0, 1, 1, 1, 0,
    1, 0, 0, 0, 1,
    1, 1, 1, 1, 1,
    1, 0, 0, 0, 1,
    1, 0, 0, 0, 1
  ],
  b: [
    1, 1, 1, 1, 0,
    1, 0, 0, 0, 1,
    1, 1, 1, 1, 1,
    1, 0, 0, 0, 1,
    1, 1, 1, 1, 0
  ],
  c: [
    0, 1, 1, 1, 1,
    1, 0, 0, 0, 0,
    1, 0, 0, 0, 0,
    1, 0, 0, 0, 0,
    0, 1, 1, 1, 1
  ],
  d: [
    1, 1, 1, 1, 0,
    1, 0, 0, 0, 1,
    1, 0, 0, 0, 1,
    1, 0, 0, 0, 1,
    1, 1, 1, 1, 0
  ],
  e: [
    1, 1, 1, 1, 1,
    1, 0, 0, 0, 0,
    1, 1, 1, 0, 0,
    1, 0, 0, 0, 0,
    1, 1, 1, 1, 1
  ],
  f: [
    1, 1, 1, 1, 1,
    1, 0, 0, 0, 0,
    1, 1, 1, 1, 0,
    1, 0, 0, 0, 0,
    1, 0, 0, 0, 0
  ],
  g: [
    0, 1, 1, 1, 0,
    1, 0, 0, 0, 0,
    1, 0, 1, 1, 1,
    1, 0, 0, 0, 1,
    0, 1, 1, 1, 0
  ],
  h: [
    1, 0, 0, 0, 1,
    1, 0, 0, 0, 1,
    1, 1, 1, 1, 1,
    1, 0, 0, 0, 1,
    1, 0, 0, 0, 1
  ],
  i: [
    1, 1, 1, 1, 1,
    0, 0, 1, 0, 0,
    0, 0, 1, 0, 0,
    0, 0, 1, 0, 0,
    1, 1, 1, 1, 1
  ],
  j: [
    1, 1, 1, 1, 1,
    0, 0, 0, 0, 1,
    0, 0, 0, 0, 1,
    1, 0, 0, 0, 1,
    0, 1, 1, 1, 0,
  ],
  k: [
    1, 0, 0, 0, 1,
    1, 0, 0, 1, 0,
    1, 1, 1, 1, 0,
    1, 0, 0, 1, 0,
    1, 0, 0, 0, 1
  ],
  l: [
    1, 0, 0, 0, 0,
    1, 0, 0, 0, 0,
    1, 0, 0, 0, 0,
    1, 0, 0, 0, 0,
    1, 1, 1, 1, 1
  ],
  m: [
    1, 0, 0, 0, 1,
    1, 1, 0, 1, 1,
    1, 0, 1, 0, 1,
    1, 0, 0, 0, 1,
    1, 0, 0, 0, 1
  ],
  n: [
    1, 0, 0, 0, 1,
    1, 1, 0, 0, 1,
    1, 0, 1, 0, 1,
    1, 0, 0, 1, 1,
    1, 0, 0, 0, 1
  ],
  o: [
    0, 1, 1, 1, 0,
    1, 0, 0, 0, 1,
    1, 0, 0, 0, 1,
    1, 0, 0, 0, 1,
    0, 1, 1, 1, 0
  ],
  p: [
    1, 1, 1, 1, 0,
    1, 0, 0, 0, 1,
    1, 1, 1, 1, 0,
    1, 0, 0, 0, 0,
    1, 0, 0, 0, 0
  ],
  q: [
    0, 1, 1, 1, 0,
    1, 0, 0, 0, 1,
    1, 0, 0, 0, 1,
    1, 0, 0, 1, 0,
    0, 1, 1, 1, 1
  ],
  r: [
    1, 1, 1, 1, 0,
    1, 0, 0, 0, 1,
    1, 1, 1, 1, 0,
    1, 0, 0, 1, 0,
    1, 0, 0, 0, 1
  ],
  s: [
    0, 1, 1, 1, 0,
    1, 0, 0, 0, 0,
    0, 1, 1, 1, 0,
    0, 0, 0, 0, 1,
    0, 1, 1, 1, 0
  ],
  t: [
    1, 1, 1, 1, 1,
    0, 0, 1, 0, 0,
    0, 0, 1, 0, 0,
    0, 0, 1, 0, 0,
    0, 0, 1, 0, 0,
  ],
  u: [
    1, 0, 0, 0, 1,
    1, 0, 0, 0, 1,
    1, 0, 0, 0, 1,
    1, 0, 0, 0, 1,
    0, 1, 1, 1, 0
  ],
  v: [
    1, 0, 0, 0, 1,
    1, 0, 0, 0, 1,
    1, 0, 0, 0, 1,
    0, 1, 0, 1, 0,
    0, 0, 1, 0, 0
  ],
  w: [
    1, 0, 0, 0, 1,
    1, 0, 0, 0, 1,
    1, 0, 1, 0, 1,
    1, 0, 1, 0, 1,
    0, 1, 0, 1, 0
  ],
  x: [
    1, 0, 0, 0, 1,
    0, 1, 0, 1, 0,
    0, 1, 1, 1, 0,
    0, 1, 0, 1, 0,
    1, 0, 0, 0, 1
  ],
  y: [
    1, 0, 0, 0, 1,
    1, 0, 0, 0, 1,
    0, 1, 0, 1, 0,
    0, 0, 1, 0, 0,
    0, 0, 1, 0, 0
  ],
  z: [
    1, 1, 1, 1, 1,
    0, 0, 0, 1, 0,
    0, 0, 1, 0, 0,
    0, 1, 0, 0, 0,
    1, 1, 1, 1, 1,
  ]
};

const blocksPerLetter = 5;
const rows = letters.a.length / blocksPerLetter;
const word = 'abcdefghijklmnopqrstuvwxyz';
const blocks = [];
const separator = '  ';

const wordAr = word.toLowerCase().split('');

for (let r = 0; r < rows; r++) {
  for (let i = 0; i < word.length; i++) {
    const start = r * blocksPerLetter;
    const letter = letters[wordAr[i]];
    blocks.push(...letter.slice(start, start + blocksPerLetter));
  }
}

let str = '';

for (let i = 0; i < blocks.length; i++) {
  str += blocks[i] ? '█' : ' ';
  if ((i + 1) % blocksPerLetter === 0) str += separator;
  if ((i + 1) % (word.length * blocksPerLetter) === 0) str += '\n';
}

console.log(str);

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