[Shopify] Retrieve the template JSON of the published theme

published-theme-product-temple.js

    fetch("shopify:admin/api/2025-04/graphql.json", {
      method: "POST",
      body: JSON.stringify({
        query: `
          query {
            themes(first: 1, roles: MAIN) {
              edges {
                node {
                  name
                  id
                  role
                  files(filenames: ["templates/product.json"]) {
                    nodes {
                      filename
                      body {
                        ... on OnlineStoreThemeFileBodyText {
                          content
                        }
                      }
                    }
                  }
                }
              }
            }
          }
      `,
      }),
    })
      .then((res) => res.json())
      .then((data) => {
        console.log(data);
      })
      .catch((err) => {
        console.error(err);
      });