Faker.js: faker.internet.email() may generate invalid email with other locales

[clarmso]

When I'm trying to generate some email address under the "ja" locale, some email address are invalid.

To reproduce the issue, I use the browser's console from the demo page (https://rawgit.com/Marak/faker.js/master/examples/browser/index.html). Here's the input and output:

console.log(faker)
VM599:1 Faker {locales: {…}, locale: "ja", localeFallback: "en", definitions: {…}, fake: ƒ, …}
undefined
faker.locale = "ja"
"ja"
faker.internet.email()
"[email protected]"
faker.internet.email()
"[email protected]"
faker.internet.email()
"[email protected]"
faker.internet.email()
"[email protected]"
faker.internet.email()
"[email protected]"
faker.internet.email()
"[email protected]"
faker.internet.email()
"[email protected]"
faker.internet.email()
"[email protected]"

The email addresses that start with "." character are invalid. Please see https://en.wikipedia.org/wiki/Email_address#Syntax for the details.

[clarmso]

If this is a legit issue, I could potentially open a PR to fix it.

[Marak]

@clarmso -

Thank you for bringing this to our attention.

If you are able to open a PR to resolve this it would be much appreciated.

Thank you.

[netochaves]

I open a PR for this, the same problem was happening with ch locales. The problem was because of this regex:
https://github.com/Marak/faker.js/blob/cb851b7656309e99ebbb61174f68d5e93e2ee147/lib/helpers.js#L28

This was removing the Japanese characters, so I just include them in the regex.