add guatemala phone number by ignaciosuarezquilis · Pull Request #2395 · validatorjs/validator.js

The files changed doesnt show any modifications to readme file. Do check again .
To add tests you can simply see reference here

validator.js/test/validators.test.js

Lines 10059 to 10075 in 79f5d18

locale: 'fa-AF',
valid: [
'0511231231',
'+93511231231',
'+93281234567',
],
invalid: [
'212528812312123',
'+212-5290-12312',
'++212528812312',
'12345',
'Afghanistan',
'this should fail',
'212 5288---12312',
'+503 1111 1111',
'00 +503 1234 5678',
],

Just add valid and invalid numbers as shown for other countries