export declare type DefaultLabel = string | number | boolean;
export declare type DefaultValue = string | number | boolean;
declare type DefaultKey = string | number;
export interface DataSourceNode<Label = DefaultLabel, Value = DefaultValue> {
    label: Label;
    value: Value;
    key?: DefaultKey;
    isLeaf?: boolean;
    children?: this[];
}
export declare type DataSource<Label = DefaultLabel, Value = DefaultValue> = Array<DataSourceNode<Label, Value>>;
export declare type PromiseOrSync<T> = Promise<T> | T;
export declare type DataSourceService<Label = DefaultLabel, Value = DefaultValue> = () => PromiseOrSync<DataSource<Label, Value>>;
export declare type DataSourceOnLoadNode<Label = DefaultLabel, Value = DefaultValue> = (node: DataSourceNode<Label, Value>) => DataSourceNode<Label, Value>;
export declare type LooseDataSource<Label = DefaultLabel, Value = DefaultValue> = Array<Value | DataSourceNode<Label, Value>>;
export declare type AsyncDataSource<Label = DefaultLabel, Value = DefaultValue> = PromiseOrSync<DataSource<Label, Value>> | DataSourceService<Label, Value>;
export {};