rollbar/src/server/telemetry/urlHelpers.js

Effortlessly track and debug errors in your JavaScript applications with Rollbar. This package includes advanced error tracking features and an intuitive interface to help you identify and fix issues more quickly.

import { URL } from 'url';

import { merge } from '../../utility.js';

// This function replicates the relevant logic in node/lib/http.js as closely
// as possible in order to produce the same result. Therefore, the code is
// replicated as is, favoring the closest match to the original code without style changes.
//
// The code here is only used to build telemetry metadata and is not used to
// build actual http requests.
function mergeOptions(input, options, cb) {
  if (typeof input === 'string') {
    const urlStr = input;
    input = urlToHttpOptions(new URL(urlStr));
  } else if (input && input instanceof URL) {
    // url.URL instance
    input = urlToHttpOptions(input);
  } else {
    cb = options;
    options = input;
    input = null;
  }

  if (typeof options === 'function') {
    cb = options;
    options = input || {};
  } else {
    options = merge(input || {}, options);
  }
  return { options: options, cb: cb };
}

// This function replicates the relevant logic in node/lib/url.js as closely
// as possible in order to produce the same result. Therefore, the code is
// replicated as is, favoring the closest match to the original code without style changes.
//
// The code here is only used to build telemetry metadata and is not used to
// build actual http requests.
function urlToHttpOptions(url) {
  const options = {
    protocol: url.protocol,
    hostname:
      typeof url.hostname === 'string' && url.hostname.startsWith('[')
        ? url.hostname.slice(1, -1)
        : url.hostname,
    hash: url.hash,
    search: url.search,
    pathname: url.pathname,
    path: `${url.pathname || ''}${url.search || ''}`,
    href: url.href,
  };
  if (url.port !== '') {
    options.port = Number(url.port);
  }
  if (url.username || url.password) {
    options.auth = `${url.username}:${url.password}`;
  }
  return options;
}

function constructUrl(options) {
  var url = options.protocol || 'http:';
  url += '//';
  if (options.auth) {
    url += `${options.auth}@`;
  }
  url += options.hostname || options.host || 'localhost';
  if (options.port) {
    url += `:${options.port}`;
  }
  url += options.path || '/';

  return url;
}

export { mergeOptions, constructUrl };