@antv/g2/src/encode/index.ts

the Grammar of Graphics in Javascript

export { Constant } from './constant';
export { Transform } from './transform';
export { Field } from './field';
export { Column } from './column';

export type { ConstantOptions } from './constant';
export type { TransformOptions } from './transform';
export type { FieldOptions } from './field';
export type { ColumnOptions } from './column';