Node.js HTTP client with Netscape cookie file support and auto-refresh on cookie file changes

index.ts

import { watch } from "chokidar";
import FileCookieStore from "file-cookie-store";
import got, { HTTPError } from "got";
import { Cookie, CookieJar, MemoryCookieStore } from "tough-cookie";
import * as winston from "winston";

const logger = winston.createLogger({
  level: "debug",
  format: winston.format.combine(
    winston.format.timestamp({
      format: "YYYY-MM-DD HH:mm:ss",
    }),
    winston.format.errors({ stack: true }),
    winston.format.splat(),
    winston.format.json(),
    winston.format.colorize({ all: true })
  ),
  transports: [new winston.transports.File({ filename: "/dev/stderr" })],
});

class RefreshingFileCookieStore extends MemoryCookieStore {
  fileStore: FileCookieStore;

  constructor(fileName: string) {
    super();
    this.fileStore = new FileCookieStore(fileName);

    // Copy cookies from FileCookieStore to this
    const refresh = () => {
      this.fileStore.export(
        {
          push: (cookie: Cookie) =>
            this.putCookie(cookie, (err) => {
              if (err) {
                logger.error("Error putting cookie", err);
              }
            }),
        },
        () => {
          logger.debug("Cookies refreshed");
        }
      );
    };

    refresh();
    watch(fileName).on("change", refresh);
  }
}

const cookieJar = new CookieJar(
  new RefreshingFileCookieStore(cookieFilePath)
);

const client = got.extend({
  cookieJar,
  headers: {
    accept: "*/*",
  },
});