var balance = require('balance-parens');

const inputs = [
  ')()(()(',
  ')))',
  '()(())()',
  ')()()(()(()))))(',
  ')))())()))('
];

const expected = [
  '()()(()())',
  '((()))',
  '()(())()',
  '((()()()(()(()))))()',
  '(((((()))())()))()'
];


const results = inputs.map(balance);

const isSuccess = !results
	.map(function(result, i) { return result === expected[i] })
	.some(function(x) { return !x });

document.write('Success: ' + isSuccess);