ant-design/components/theme/useToken.ts

import type { Theme } from '@ant-design/cssinjs';
import { useCacheToken } from '@ant-design/cssinjs';
import React from 'react';
import version from '../version';
import type { GlobalToken, MapToken, SeedToken } from './interface';

import { DesignTokenContext, defaultTheme } from './context';
import defaultSeedToken from './themes/seed';
import formatToken from './util/alias';

// ================================== Hook ==================================
export default function useToken(): [Theme<SeedToken, MapToken>, GlobalToken, string] {
  const {
    token: rootDesignToken,
    hashed,
    theme,
    components,
  } = React.useContext(DesignTokenContext);

  const salt = `${version}-${hashed || ''}`;

  const mergedTheme = theme || defaultTheme;

  const [token, hashId] = useCacheToken<GlobalToken, SeedToken>(
    mergedTheme,
    [defaultSeedToken, rootDesignToken],
    {
      salt,
      override: { override: rootDesignToken, ...components },
      formatToken,
    },
  );

  return [mergedTheme, token, hashed ? hashId : ''];
}