Improve code style

Author: tshemsedinov

JavaScript/2-imperative-good.js

@@ -11,13 +11,12 @@
 const fs = require('fs');
 
 const loadFile = (fileName) => {
- let data = null;
  try {
- data = fs.readFileSync(fileName, 'utf8');
+ const data = fs.readFileSync(fileName, 'utf8');
+ return data;
  } catch (error) {
  console.log('Can\'t read file: ' + fileName);
  }
- return data;
 };
 
 const parseFile = (data) => {
@@ -27,12 +26,14 @@ const parseFile = (data) => {
  for (const line of lines) {
  if (line) {
  const cells = line.split(',');
- const name = cells[0];
- const population = parseInt(cells[1]);
- const area = parseInt(cells[2]);
- const density = parseInt(cells[3]);
- const country = cells[4];
- cities.push({ name, population, area, density, country });
+ const [name, population, area, density, country] = cells;
+ cities.push({
+ name,
+ population: parseInt(population),
+ area: parseInt(area),
+ density: parseInt(density),
+ country,
+ });
  }
  }
  return cities;