Running `check` for one field

I have some Meteor methods that update one field in a document, and for now I’m doing something like this:

if (email) {
  schemaContext.validateOne({email: email}, 'email') || throw new Meteor.Error(500, 'Invalid email');
  // Update email
}

I wanted to just use check lib for validation, but it doesn’t work because it requires all fields in the schema to exist (no validateOne variant of that).

[aldeed]

In SimpleSchema 2.0, this can be done with

mySchema.validate({ email: email }, { keys: ['email'] });

[smohantyCME]

In SimpleSchema 2.0, this can be done with

mySchema.validate({ email: email }, { keys: ['email'] });

What about cleaning just 1 field? Can that be done too?