Missing example of tailor consuming a template storage. about tailor

[MateusAbdala]

I implemented it my way, created a new file template-storage.js based on fetch-template.js from tailor:

"use strict";

const http = require("http");
const url = require("url");

const TEMPLATE_ERROR = 0;
const TEMPLATE_NOT_FOUND = 1;

class TemplateError extends Error {
  constructor(...args) {
    super(...args);
    this.code = TEMPLATE_ERROR;
    this.presentable = "Template Error";
    const [{ statusCode }] = args;

    if (statusCode === 404) {
      this.code = TEMPLATE_NOT_FOUND;
      this.presentable = "Template Not Found";
    }
  }
}

/**
 * Returns pathname by request
 *
 * @param  {Object} request - Request Object
 *
 * @return {String} pathname
 */
const getPathName = (request) => url.parse(request.url, true).pathname;

/**
 * Fetches the template from storage
 */
module.exports = () => async (request, parseTemplate) => {
  const pathname = getPathName(request);

  return parseTemplate(
    await new Promise((resolve, reject) => {
      const req = http.get(
        `http://s3.example.com.br/templates${pathname}.html`
      );
      
      req.on("response", (res) => {
        let data = "";
        res.on("data", (chunk) => (data += chunk));

        res.on("end", () => {
          if (res.statusCode !== 200) {
            reject(new TemplateError(res));
          }
          resolve(data);
        });
      });

      req.on("error", (err) => {
        console.log("Error: " + err.message);
        reject(err);
      });
    })
  );
};

module.exports.TEMPLATE_ERROR = TEMPLATE_ERROR;
module.exports.TEMPLATE_NOT_FOUND = TEMPLATE_NOT_FOUND;

and updated my index.js:

"use strict";

const http = require("http");
const Tailor = require("node-tailor");
const TemplateStorage = require("./template-storage");

const PORT = process.env.PORT || 8080;

const tailor = new Tailor({
  // templatesPath: __dirname + '/templates', // local templates only
  fetchTemplate: TemplateStorage(),
});

http
  .createServer((req, res) => {
    if (req.url === "/favicon.ico") {
      res.writeHead(200, { "Content-Type": "image/x-icon" });
      return res.end("");
    }

    req.headers["x-request-uri"] = req.url;

    tailor.requestHandler(req, res);
  })
  .listen(PORT, function () {
    console.log(`Tailor server listening on port ${PORT}`);
  })
  .on("error", (req, err) => console.error(err));