Tic-tac-toe scan all blocks solution

tic-tac-toe-all-blocks.js

var getWinners = (blocks, amount) => {
  for (let i = 0; i < amount; i++) {
    const rowBlocks = [];
    const columnBlocks = [];
    const slashBlocks = [];
    const backSlashBlocks = [];
    for (let j = 0; j < amount; j++) {
      rowBlocks.push(blocks[i * amount + j]);
      columnBlocks.push(blocks[j * amount + i]);
      backSlashBlocks.push(blocks[j * amount + j]);
      slashBlocks.push(blocks[j * amount + (amount - j - 1)]);
    }
    if (getIsSame(rowBlocks) != null) {
    console.log("row", rowBlocks);
      return getIsSame(rowBlocks);
    }
    if (getIsSame(columnBlocks) != null) {
    console.log("column", columnBlocks);
      return getIsSame(columnBlocks);
    }
    if (getIsSame(slashBlocks) != null) {
    console.log("slash", slashBlocks);
      return getIsSame(slashBlocks);
    }
    if (getIsSame(backSlashBlocks) != null) {
    console.log("backSlash", backSlashBlocks);
      return getIsSame(backSlashBlocks);
    }
  }
};

const getIsSame = (items) => {
  return items.every((item) => item === items[0] && item !== 2) ? items[0] : null;
};

console.log("Winner is: ", getWinners([
  1, 1, 1, 2,
  0, 1, 1, 2,
  1, 1, 1, 2,
  2, 2, 2, 2
], 4));