next.js/examples/with-sfcc/sfcc.js

import { Customer, Product, Search } from "commerce-sdk";

export default async function getProducts(searchQuery) {
  const clientConfig = {
    headers: {
      authorization: ``,
    },
    parameters: {
      clientId: process.env.SFDC_CLIENT_ID,
      secret: process.env.SFDC_SECRET,
      organizationId: process.env.SFDC_ORGANIZATIONID,
      shortCode: process.env.SFDC_SHORTCODE,
      siteId: process.env.SFDC_SITEID,
    },
  };

  const credentials = `${clientConfig.parameters.clientId}:${clientConfig.parameters.secret}`;
  const base64data = Buffer.from(credentials).toString("base64");
  const headers = { Authorization: `Basic ${base64data}` };
  const client = new Customer.ShopperLogin(clientConfig);

  const shopperToken = await client.getAccessToken({
    headers,
    body: {
      grant_type: "client_credentials",
    },
  });

  const configWithAuth = {
    ...clientConfig,
    headers: { authorization: `Bearer ${shopperToken.access_token}` },
  };

  const searchClient = new Search.ShopperSearch(configWithAuth);
  const searchResults = await searchClient.productSearch({
    parameters: { q: searchQuery },
  });

  const results = [];

  const productsClient = new Product.ShopperProducts(configWithAuth);
  await Promise.all(
    searchResults.hits.map(async (product) => {
      const productResults = await productsClient.getProduct({
        parameters: {
          organizationId: clientConfig.parameters.organizationId,
          siteId: clientConfig.parameters.siteId,
          id: product.productId,
        },
      });

      results.push(productResults);
    }),
  );

  return results;
}