@antv/g2/lib/spec/palette.d.ts

the Grammar of Graphics in Javascript

import { PaletteComponent } from '../runtime';
export type Palette = Category10Palette | Category20Palette | CustomPalette;
export type PaletteTypes = 'category10' | 'category20' | PaletteComponent;
export type Category10Palette = {
    type?: 'category10';
};
export type Category20Palette = {
    type?: 'category20';
};
export type CustomPalette = {
    type?: PaletteComponent;
    [key: string]: any;
};