/**
 * Type-safe encoding for `messageStubParameters` of `GROUP_PARTICIPANT_*`
 * stub messages. Upstream Baileys (`messages-recv.ts:714`) serializes each
 * affected participant as `JSON.stringify({ id, phoneNumber? })` so
 * `process-message.ts` can `JSON.parse` it cleanly. The proto type is
 * `string[]` — too loose to catch a caller that forgets to encode (and
 * exactly the bug commit `cf8e9ca` shipped: raw JID instead of JSON).
 *
 * The brand carries no runtime cost; it just prevents an unbranded
 * `string` from being assigned where a `StubParticipantParam` is expected.
 */
declare const StubParticipantBrand: unique symbol;
export type StubParticipantParam = string & {
    readonly [StubParticipantBrand]: never;
};
export interface StubParticipantPayload {
    id: string;
    phoneNumber?: string;
}
export declare const encodeStubParticipant: (p: StubParticipantPayload) => StubParticipantParam;
/**
 * Parse a raw `messageStubParameters[i]` back into its payload. Validates
 * the shape so a malformed/legacy raw-JID string fails loudly instead of
 * propagating a wrong type. Returns `null` on any decode failure — callers
 * decide whether that is an assertion failure or a fall-through.
 */
export declare const decodeStubParticipant: (raw: string | null | undefined) => StubParticipantPayload | null;
export {};
//# sourceMappingURL=group-stub-params.d.ts.map