/**
 * Non-content blocks: the streaming placeholder, the unsupported-type notice, and the live
 * activity timeline.
 *
 * These are the states a Dynamic UI message passes through rather than components the model
 * authors, which is why they sit apart from the renderer registry.
 */
import { type ActivityStep } from '@/dynamic-ui';
/** Shown in a component's place while its fence is still arriving. */
export declare function PendingBlock(props: {
    componentType: string;
}): import("solid-js").JSX.Element;
/**
 * A component type this build has no renderer for.
 *
 * Core can add a component and ship it before an embedded widget is updated, so this is a normal
 * state, not an error: it says so plainly and the rest of the conversation renders untouched.
 */
export declare function UnsupportedBlock(): import("solid-js").JSX.Element;
/**
 * The "Working…" timeline: flow nodes and tool calls as they run.
 *
 * Follows TORUK Core's `useWorkingActivity`: the step list is open only while something is
 * *running*. Once the turn finishes it collapses to the "Worked · n steps" header, which stays as a
 * disclosure the reader can open again — Core does not leave a finished run's internals expanded
 * above the answer, and the header carries a chevron so it is visibly a control rather than a label.
 */
export declare function ActivityTimeline(props: {
    steps: ActivityStep[];
    pending?: boolean;
}): import("solid-js").JSX.Element;