import { AssistantConversationProcessing, Message } from './conversation';
import { AssistantTr } from './i18n';
/**
 * What a message IS, for anything that shows it to a person.
 *
 * - `output`: text the model produced, or a genuine settled outcome (an error,
 *   a quota refusal, the incomplete-turn note). `text` may be empty only when
 *   the message carries completion evidence without prose — its cards still
 *   render.
 * - `working`: a live turn with nothing to show yet. Loading copy is drawn from
 *   the processing state, never from here, so `text` is empty.
 * - `stopped`: a turn that ended without producing anything, shown as "Stopped".
 *
 * ★ A status label is not an answer, so consumers act on `kind`, not on whether
 * `text` is non-empty: Copy and Listen are for `output` only, and the voice
 * session never advances on anything else.
 */
export type AssistantDisplayContent = {
    readonly kind: "output";
    readonly text: string;
} | {
    readonly kind: "working";
    readonly text: "";
} | {
    readonly kind: "stopped";
    readonly text: string;
};
/**
 * The one projection from a stored message to what is shown for it.
 *
 * Used by every surface that shows a message to a person — the bubble, the
 * history preview, Copy, Listen, Export, the voice transcript — so no two of
 * them can disagree about whether a bubble holds an answer.
 *
 * ★★ PURE, and never written back. See `legacyFiller.ts` for why storage is not
 * rewritten.
 *
 * `processing` is the entry for the message's OWN conversation. Passing another
 * conversation's entry (or none, for a conversation with a live turn) would show
 * that live turn as Stopped.
 *
 * The rule for `stopped` is deliberately conservative — ALL of:
 *   1. an assistant message;
 *   2. no turn in flight for it;
 *   3. no completion evidence (see `hasCompletionEvidence`);
 *   4. content that is empty, EXACTLY loading copy an older build stored, or
 *      EXACTLY the "Stopped" a BOFF-7229 build stored.
 * A reply that happens to read "Thinking..." carries evidence and is left alone.
 *
 * ★ Known limit, accepted: liveness is per TAB, because processing is never
 * persisted. A second tab opened on the same profile while the first is mid-turn
 * shows that turn as "Stopped" until the first tab's answer is reloaded — the
 * same message a real orphan shows, and nothing distinguishes the two. Older
 * builds showed frozen loading copy there instead.
 */
export declare function getAssistantDisplayContent(message: Message, processing: AssistantConversationProcessing | null | undefined, tr: AssistantTr): AssistantDisplayContent;
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