@antv/g2/lib/util/attr.d.ts

the Grammar of Graphics in Javascript

import { Attribute } from '../dependents';
/**
 * @ignore
 * get the mapping value by attribute, if mapping value is nil, return def
 * @param attr
 * @param value
 * @param def
 * @returns get mapping value
 */
export declare function getMappingValue(attr: Attribute, value: any, def: string): string;