30-seconds-of-code/snippets/readFileLines.md

readFileLines

Returns an array of lines from the specified file.

Use readFileSync function in fs node package to create a Buffer from a file. convert buffer to string using toString(encoding) function. creating an array from contents of file by spliting file content line by line (each \n).

const fs = require('fs');
const readFileLines = filename => fs.readFileSync(filename).toString('UTF8').split(/\r?\n/);
/*
  contents of test.txt :
    line1
    line2
    line3
    ___________________________
  let arr = readFileLines('test.txt')
  console.log(arr) // -> ['line1', 'line2', 'line3']
 */