import { type IntegrationCatalogEntry } from "../../integrations/catalog.js";
export declare function listChannelsForSettings(): readonly IntegrationCatalogEntry[];
/** One credential a channel needs, from the adapter or the catalog. */
export interface ChannelCredential {
    key: string;
    required: boolean;
    /** At least one key in a group must be set (Resend or SendGrid). */
    alternativeGroup?: string;
}
/**
 * True when a required credential, or every credential of a required
 * alternative group, is not configured. `isConfigured` answers for one key.
 */
export declare function hasMissingRequiredCredentials(credentials: readonly ChannelCredential[], isConfigured: (key: string) => boolean): boolean;
export type ChannelConnectionState = "on" | "off" | "not-set-up";
/**
 * A channel is on only when it is both enabled and configured: an enabled row
 * whose credentials were removed receives nothing.
 */
export declare function channelConnectionState(status: {
    configured: boolean;
    enabled: boolean;
}): ChannelConnectionState;