githubAuth.js

class GitHubStrategy extends OAuthStrategy {
  async getProfile (authResult) {
    const accessToken = authResult.access_token;

    // get private email
    let { data } = await axios.get('https://api.github.com/user/emails', {
      headers: { authorization: `Bearer ${accessToken}` }
    });

    // get user data
    let userData = await axios.get('https://api.github.com/user', {
      headers: { authorization: `Bearer ${accessToken}` }
    });

    try {
      data = data[0];
      // add relevant user data
      data.avatar_url = userData.data.avatar_url
      data.name = userData.data.name
      return data
    } catch (e) {}
  }

  async getEntityData(profile) {
    const baseData = await super.getEntityData(profile);

    // don't get the email from the profile
    const data = {
      ...baseData,
      // email: profile.email
    };

    // your logic goes here!
    return data;
  }
}