/**
 * Color utilities for workflow traces
 */
import type { SpanNode, SpanNodeEvent } from '../trace-viewer/types';
/**
 * Get custom CSS class name for a span based on its attributes
 * This is called dynamically by the trace viewer to style spans
 */
export declare const getCustomSpanClassName: (span: SpanNode) => string;
/**
 * Get custom CSS class name for a span event based on its type
 * This is called dynamically by the trace viewer to style event markers
 */
export declare const getCustomSpanEventClassName: (spanEvent: SpanNodeEvent) => string;
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