/**
 * @license
 * Copyright 2026 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import type { HistoryItem, HistoryItemWithoutId } from '../types.js';
import type { BackgroundShell } from '../hooks/shellReducer.js';
import type { TrackedToolCall } from '../hooks/useToolScheduler.js';
/**
 * Calculates the border color and dimming state for a tool group message.
 */
export declare function getToolGroupBorderAppearance(item: HistoryItem | HistoryItemWithoutId | {
    type: 'tool_group';
    tools: TrackedToolCall[];
}, activeShellPtyId: number | null | undefined, embeddedShellFocused: boolean | undefined, allPendingItems?: HistoryItemWithoutId[], backgroundShells?: Map<number, BackgroundShell>): {
    borderColor: string;
    borderDimColor: boolean;
};