import { FC } from 'react';
/**
 * Header toggle for "read every reply aloud" (BOFF-6290).
 *
 * Opt-in, persisted per profile, and **off by default** — the assistant must
 * never start talking on its own until someone has said they want that. Turning
 * it on affects the NEXT reply only; it does not start reading the transcript.
 *
 * Renders nothing when the platform has no speech output, so browsers without
 * `speechSynthesis` see no dead switch.
 *
 * Availability is checked here for the same reason the per-message button
 * checks it: with no installed voice for the app language, switching this on
 * would hand every reply to whatever voice the engine defaults to — a Tamil
 * answer read in English. So it is disabled, with the reason as its tooltip,
 * exactly like the Listen button. It stays operable while it is ON, because a
 * switch you cannot turn off is worse than one you cannot turn on.
 */
export declare const AssistantAutoSpeakToggle: FC;
//# sourceMappingURL=AssistantAutoSpeakToggle.d.ts.map