/**
 * credentials for app authentication
 */
type Credentials = ClientCredentials | TokenCredentials | UserManagedIdentityCredentials | FederatedIdentityCredentials;
/**
 * credentials for authentication
 * of an app via `clientId` and `clientSecret`
 */
type ClientCredentials = {
    readonly clientId: string;
    readonly clientSecret: string;
    readonly tenantId?: string;
};
/**
 * credentials for authentication
 * of an app via any external auth method
 */
type TokenCredentials = {
    readonly clientId: string;
    readonly tenantId?: string;
    readonly token: (scope: string | string[], tenantId?: string) => string | Promise<string>;
};
/**
 * credentials for user managed identity
*/
type UserManagedIdentityCredentials = {
    readonly clientId: string;
    readonly tenantId?: string;
};
/**
 * credentials for fedrated identity credentials
*/
type SystemFederatedIdentityCredentials = {
    readonly clientId: string;
    readonly managedIdentityType: 'system';
    readonly tenantId?: string;
};
type UserFederatedIdentityCredentials = {
    readonly clientId: string;
    readonly managedIdentityClientId: string;
    readonly managedIdentityType: 'user';
    readonly tenantId?: string;
};
type FederatedIdentityCredentials = SystemFederatedIdentityCredentials | UserFederatedIdentityCredentials;

export type { ClientCredentials, Credentials, FederatedIdentityCredentials, TokenCredentials, UserManagedIdentityCredentials };