@antv/g2/lib/runtime/types/data.d.ts

the Grammar of Graphics in Javascript

export type DataOptions = Record<string, any>;
export type DataProps = Record<string, never>;
export type DataComponent<O extends DataOptions = DataOptions> = {
    (options?: O): Data;
    props: DataProps;
};
export type Data = (data: any) => any | Promise<any>;