title: Execute user flow on Azure B2C with Angular SPA MSAL library
body: <p>I have setup a Azure B2C for experimenting, and have created a signupandsign as a user flow.</p>
  <p>I've followed the github samples on how to use the MSAL library from Angular 2+ and have as a result got this format:</p>
  <pre><code>export const protectedResourceMap: [string, string[]][] = [
    ['https://graph.microsoft.com/v1.0/me', ['user.read']],
  ];
  
  function MSALConfigFactory(): Configuration {
    return {
      auth: {
        clientId: environment.clientId,
        authority: environment.authority,
        validateAuthority: true,
        redirectUri: environment.redirectUrl,
        postLogoutRedirectUri: environment.redirectUrl,
        navigateToLoginRequestUrl: true,
      },
      cache: {
        storeAuthStateInCookie: false, // set to true for IE 11
      },
    };
  }
  
  function MSALAngularConfigFactory(): MsalAngularConfiguration {
    return {
      popUp: false,
      protectedResourceMap
    };
  }
  
  export const environment = {
    production: false,
    clientId: '22ccxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx',
    authority: 'https://login.microsoftonline.com/bc5xxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/',
    redirectUrl: 'http://localhost:4200'
  };
  </code></pre>
  <p>But all it does it take to sign in page, doesn't give me any options for sign up.
  How do i trigger the signupandsign user flow from my Angular SPA?</p>