SignIn com GitHub

gitHubSignIn.dart

final GitHubSignIn gitHubSignIn = GitHubSignIn(
    clientId: "<ClientId>",
    clientSecret:
        "<ClientSecret>",
    redirectUrl:
        "<CallBack>");
var result = await gitHubSignIn.signIn(context);
switch (result.status) {
  case GitHubSignInResultStatus.ok:
    print(result.token);
    break;

  case GitHubSignInResultStatus.cancelled:
  case GitHubSignInResultStatus.failed:
    print(result.errorMessage);
    break;
}