type NodeAssign = 'spread' | 'self';
type ExchangeFieldNames<D, F extends Record<string, keyof D>> = Omit<D, F[keyof F]> & {
    [P in keyof F]: D[F[P]];
};
type TransformFieldNames<D, F extends Record<string, any>, C extends string> = (C extends keyof D ? ExchangeFieldNames<Omit<D, C> & Record<C, TransformFieldNames<D, F, C>>, F> : ExchangeFieldNames<D, F>)[];
/**
 * 转换字段名，返回一个转换字段后的值，不改变原值。
 *
 * @alias module:Tree.transformFieldNames
 * @since 4.14.0
 * @param {Object[]} data 对象数组。如果是树结构数据，需要指定第三个参数 childrenField
 * @param {Object} fieldNames 字段名映射
 * @param {string} [childrenField] 子级数据字段名
 * @param {'spread'|'self'} [nodeAssign='spread'] 节点赋值方式，默认`spread`。`spread`表示使用展开运算符创建新值，`self`表示使用自身对象。
 * @returns {Object[]}
 * @example
 *
 * const options = [{code: '1', name: 'one'},{code:'2', name:'two'}];
 * const newOptions = transformFieldNames(options, {label: 'name', value: 'code'});
 * // [{value: '1', label: 'one'},{value:'2', label:'two'}]
 *
 * // 嵌套数据，指定子级字段名 children
 * const options2 = [{code: '1', name: 'one'},{code:'2', name:'two', children: [{code:'2-1', name:'two-one', children: [{code: '2-1-1', name:'two-one-one'}]}]}];
 * const newOptions2 = transformFieldNames(options2, {label: 'name', value: 'code'}, 'children');
 * // [{value: '1', label: 'one'},{value:'2', label:'two', children: [{value: '2-1', label:'two-one', children: [{value: '2-1-1', label:'two-one-one'}]}]}]
 *
 * const options3 = [{code: '1', name: 'one'},{code:'2', name:'two', childs: [{code:'2-1', name:'two-one'}]}];
 * const newOptions3 = transformFieldNames(options3, {label: 'name', value: 'code'}, 'childs');
 * // [{value: '1', label: 'one'},{value:'2', label:'two', childs: [{value: '2-1', label:'two-one'}]}]
 *
 * // 嵌套数据，并替换子集字段名
 * const newOptions4 = transformFieldNames(options3, {label: 'name', value: 'code', children: 'childs'}, 'childs');
 * // [{value: '1', label: 'one'},{value:'2', label:'two', children: [{value: '2-1', label:'two-one'}]}]
 */
declare function transformFieldNames<D, F extends Record<string, keyof D>, C extends string>(data: D[], fieldNames: F, childrenField?: C, nodeAssign?: NodeAssign): TransformFieldNames<D, F, C>;
export default transformFieldNames;