function validateProviderUserInfo()

in src/auth/auth-api-request.ts [313:362]
43 lines of code
15 McCabe index (conditional complexity)

function validateProviderUserInfo(request: any): void {
  const validKeys = {
    rawId: true,
    providerId: true,
    email: true,
    displayName: true,
    photoUrl: true,
  };
  // Remove invalid keys from original request.
  for (const key in request) {
    if (!(key in validKeys)) {
      delete request[key];
    }
  }
  if (!validator.isNonEmptyString(request.providerId)) {
    throw new FirebaseAuthError(AuthClientErrorCode.INVALID_PROVIDER_ID);
  }
  if (typeof request.displayName !== 'undefined' &&
      typeof request.displayName !== 'string') {
    throw new FirebaseAuthError(
      AuthClientErrorCode.INVALID_DISPLAY_NAME,
      `The provider "displayName" for "${request.providerId}" must be a valid string.`,
    );
  }
  if (!validator.isNonEmptyString(request.rawId)) {
    // This is called localId on the backend but the developer specifies this as
    // uid externally. So the error message should use the client facing name.
    throw new FirebaseAuthError(
      AuthClientErrorCode.INVALID_UID,
      `The provider "uid" for "${request.providerId}" must be a valid non-empty string.`,
    );
  }
  // email should be a string and a valid email.
  if (typeof request.email !== 'undefined' && !validator.isEmail(request.email)) {
    throw new FirebaseAuthError(
      AuthClientErrorCode.INVALID_EMAIL,
      `The provider "email" for "${request.providerId}" must be a valid email string.`,
    );
  }
  // photoUrl should be a URL.
  if (typeof request.photoUrl !== 'undefined' &&
      !validator.isURL(request.photoUrl)) {
    // This is called photoUrl on the backend but the developer specifies this as
    // photoURL externally. So the error message should use the client facing name.
    throw new FirebaseAuthError(
      AuthClientErrorCode.INVALID_PHOTO_URL,
      `The provider "photoURL" for "${request.providerId}" must be a valid URL string.`,
    );
  }
}