code: function createWorldFile(x0, y0, res) {
    let halfPxInM = res / 2.0;
    let ret = res + '\n';
    ret += '0.0' + '\n';
    ret += '0.0' + '\n';
    ret += '-' + res + '\n';
    ret += x0 + halfPxInM + '\n';
    ret += y0 - halfPxInM;
    return ret;
  }
docs: Creates world file content.
  
  @param {Number} x0 X value of start point (top-left)
  @param {Number} y0 Y value of start point (top-left)
  @param {Number} res Ground resolution
  @returns {string} Content of world file
  @example
  const x0 = 458000;
  const y0 = 5754000;
  const res = 1;
  
  let wordlFileContent = createWorldFile(x0, y0, res);
  console.log(wordlFileContent);
  // 1
  // 0.0
  // 0.0
  // -1
  // 458000.5
  // 5753999.5