axios/lib/helpers/combineURLs.js

Promise based HTTP client for the browser and node.js

'use strict';

/**
 * Creates a new URL by combining the specified URLs
 *
 * @param {string} baseURL The base URL
 * @param {string} relativeURL The relative URL
 *
 * @returns {string} The combined URL
 */
export default function combineURLs(baseURL, relativeURL) {
  if (!relativeURL) {
    return baseURL;
  }

  let end = baseURL.length;

  while (end > 0 && baseURL.charCodeAt(end - 1) === 47) {
    end--;
  }

  return baseURL.slice(0, end) + '/' + relativeURL.replace(/^\/+/, '');
}