/**
 * * 扩展配置项，标签放置在正负值方向的位置上
 *
 * @example
 * ```javascript
 * {
 *   type: 'bar',
 *   label: {
 *     dvPosition: 'valueDirection'
 *   }
 * }
 * ```
 */
import { type EChartsExtensionInstallRegisters } from 'echarts/lib/extension';
/**
 * 柱状图标签扩展
 */
export declare function install(registers: EChartsExtensionInstallRegisters): void;