export interface PublicBinding {
    platform: string;
    imUserId: string;
    userId: string;
    createdAt: number;
    createdBy: string;
}
export declare function findBinding(platform: string, imUserId: string): PublicBinding | null;
/** Marks “this messenger platform is owned by a registered user”. */
export declare const PLATFORM_CHANNEL = "*";
export declare function listBindings(opts?: {
    userId?: string;
}): PublicBinding[];
export declare function bindImIdentity(input: {
    platform: string;
    imUserId: string;
    userId: string;
    createdBy: string;
}): PublicBinding;
/** Claim this IM identity for `userId`. Rebinds if another account already owns it. */
export declare function claimImIdentity(input: {
    platform: string;
    imUserId: string;
    userId: string;
}): {
    binding: PublicBinding;
    replacedUserId: string | null;
};
/** Claim a messenger platform (Settings → Messengers save / WeChat QR). */
export declare function claimMessengerPlatform(platform: string, userId: string): {
    binding: PublicBinding;
    replacedUserId: string | null;
};
export declare function claimMessengerSlots(slots: string[], userId: string): void;
export declare function unbindImIdentity(platform: string, imUserId: string, actorUserId?: string): boolean;
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