methods.js

export const create = new ValidatedMethod({
  name: 'accounts.create',
  validate: SignupSchema.validator(),
  run({ email, password }) {
    let userId;
    if (Meteor.isClient) {
      // this won't login the user even though it's running in the client
      Accounts.createUser({ email, password }, (error) => {
        if (!error) {
          // so I thought I'd try this, but it also doesn't login the user
          Accounts.loginWithPassword(email, password);
        }
      });
    } else {
      userId = Accounts.createUser({ email, password });
    }
  },
});