import type { AriaNode } from './aria-node.js';
export type { AriaNode };
/**
 * Roles that carry no information on their own. A node of one of these roles
 * is removed and its children are hoisted into its parent when it also has no
 * name, no text and no state flags — this is the single largest size win, and
 * it is exactly what the MCP snapshot cannot do.
 */
export declare const SNAPSHOT_NOISE_ROLES: ReadonlySet<string>;
export interface SnapshotPruneResult {
    readonly nodes: readonly AriaNode[];
    /** Nodes removed by the drop+hoist pass. */
    readonly droppedNodes: number;
    /** True when at least one node's children were replaced by a `…` marker. */
    readonly depthCapped: boolean;
    /** True when the node cap stopped emission and the `[N more nodes]` marker was appended. */
    readonly nodeCapped: boolean;
}
/** Prune `nodes` under the three caps. Deterministic: the same tree in, the same tree out. */
export declare function pruneAriaSnapshot(nodes: readonly AriaNode[]): SnapshotPruneResult;
/**
 * Render the pruned tree as one line per node: `- <role> "<name>"` plus inline
 * state flags and (for links / inputs) `url` / `placeholder` truncated to 80
 * chars. Names are JSON-quoted, so a name containing a newline cannot break the
 * one-line-per-node contract.
 */
export declare function renderSnapshot(nodes: readonly AriaNode[]): string;