Fix typing for optional

[connorjayfitzgerald]

There's a bug in the typings when marking a field as optional.
For example, this flags as an error

checkSchema({
  foo: {
    optional: {
      options: {
        nullable: true,
        checkFalsy: true,
      }
    }
  }
})

but allows the following:

checkSchema({
  foo: {
    optional: {
      nullable: true,
      checkFalsy: true,
    }
  }
})

However, this has no effect.

This has been addressed previously in #693 but it looks like this has been regressed.

Also see #742

[coveralls]

Coverage remained the same at 100.0% when pulling 4bb3816 on connorjayfitzgerald:master into d072629 on express-validator:master.

[gustavohenke]

Thanks!!

[gustavohenke]

I have pushed to your fork this change to the test, so it's a bit more useful!

[gustavohenke]

Hello! This is out with v6.2.0! 🚢

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.