Code style according to ours eslint rules

Author: tshemsedinov

JavaScript/2-functional-pure.js

@@ -1,73 +1,81 @@
+'use strict';
+
+const fs = require('fs');
+
 /* fp */
-const pipe = (...fns) => x => fns.reduce((v, f) => f(v), x)
-const curry = fn => (...args) => fn.bind(null, ...args)
-const map = curry((fn, arr) => arr.map(fn))
-const join = curry((str, arr) => arr.join(str))
-const split = curry((splitOn, str) => str.split(splitOn))
-const sort = curry((compareFn, arr) => arr.sort(compareFn))
-const filter = curry((filterFn, arr) => arr.filter(filterFn))
-/* utility */
-const first = arr => arr[0]
-const skipFirst = arr => arr.slice(1)
-const hasValue = val => !!val
-const toStr = val => val + ''
-const appendCell = (row, value) => row.concat(value)
-const cellPad = (index, str, width) => index ? str.padStart(width) : str.padEnd(width)
+const pipe = (...fns) => x => fns.reduce((v, f) => f(v), x);
+const curry = fn => (...args) => fn.bind(null, ...args);
+const map = curry((fn, arr) => arr.map(fn));
+const join = curry((str, arr) => arr.join(str));
+const split = curry((splitOn, str) => str.split(splitOn));
+const sort = curry((compareFn, arr) => arr.sort(compareFn));
+const filter = curry((filterFn, arr) => arr.filter(filterFn));
 
-const cellWidth = index => [18, 10, 8, 8, 18, 6][index]
+/* utility */
+const first = arr => arr[0];
+const skipFirst = arr => arr.slice(1);
+const hasValue = val => !!val;
+const toStr = val => val + '';
+const appendCell = (row, value) => row.concat(value);
+const cellPad = (index, str, width) => (
+ index ? str.padStart(width) : str.padEnd(width)
+);
+const cellWidth = index => [18, 10, 8, 8, 18, 6][index];
 
-const renderCell = (cell, index) => cellPad(index, toStr(cell), cellWidth(index))
-const renderRow = pipe(
- map(renderCell),
- join('')
-)
-const renderTable = pipe(
- map(renderRow),
- join('\n')
-)
+const renderCell = (cell, index) => (
+ cellPad(index, toStr(cell), cellWidth(index))
+);
+const renderRow = pipe(map(renderCell), join(''));
+const renderTable = pipe(map(renderRow), join('\n'));
 
-const getDensityCell = row => parseInt(row[3], 10)
-const proportion = (max, val) => Math.round(parseInt(val, 10) * 100 / max)
-const sortRowsByDensity = sort((row1, row2) => getDensityCell(row2) - getDensityCell(row1))
+const getDensityCell = row => parseInt(row[3], 10);
+const proportion = (max, val) => Math.round(parseInt(val, 10) * 100 / max);
+const sortRowsByDensity = sort(
+ (row1, row2) => getDensityCell(row2) - getDensityCell(row1)
+);
 
 const calcMaxDensity = pipe(
  sortRowsByDensity,
  first,
  getDensityCell
-)
+);
 
 const calcRowsProportionToMax = rows => max => rows.map(pipe(
  getDensityCell,
  densityCell => proportion(max, densityCell)
-))
+));
+
 const appendProportionCell = rows => proportions => rows.map(
  (row, index) => appendCell(row, proportions[index])
-)
+);
+
 const appendTableProportionCol = rows => pipe(
  calcMaxDensity,
  calcRowsProportionToMax(rows),
  appendProportionCell(rows)
-)(rows)
+)(rows);
+
+const parseTableLines = map(split(','));
 
-const parseTableLines = map(split(','))
 const toLines = pipe(
  split('\n'),
  skipFirst,
  filter(hasValue)
-)
+);
 
-const readFile = file => fs.readFileSync(file).toString()
+const readFile = file => fs.readFileSync(file).toString();
 
 const getDataset = pipe(
  readFile,
  toLines,
  parseTableLines
-)
+);
 
 const main = pipe(
  getDataset,
  sortRowsByDensity,
  appendTableProportionCol,
  renderTable
-)
+);
 
+console.log(main('./cities.dat'));