text: const isEmpty = require('./index')
  const assert = require('assert')
  
  // true when value = 0
  assert.equal(true, isEmpty(0), '0 is empty');
  // true when value = ""
  assert.equal(true, isEmpty(""), '"" is empty');
  // false when value = "1"
  assert.equal(false, isEmpty(1), '1 is not empty');
  // true when value = "0"
  assert.equal(true, isEmpty("0"), '0 is empty');
  // true when value  = {}
  assert.equal(true, isEmpty({}), '{} is empty');
  // true when value  = " "
  assert.equal(true, isEmpty(" "), '" " is empty');
  // false when value  = " a s d  "
  assert.equal(false, isEmpty(" a s d "), '" a s d " is not empty');
  