import type { ArkmeTimelineItem } from '../types.js';
import { type ArkmeMessageQuote } from '../message-quote.js';
export interface ArkmeComposerExtensionTarget {
    item: ArkmeTimelineItem;
    quote?: ArkmeMessageQuote;
}
/** Keep only the bounded preview and opaque action reference owned by a draft. */
export declare function composerExtensionTarget(item: ArkmeTimelineItem, quote?: ArkmeMessageQuote): ArkmeComposerExtensionTarget;
/** Browser storage and desktop replication are JSON boundaries. */
export declare function readComposerExtensionTarget(value: unknown): ArkmeComposerExtensionTarget | undefined;
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