watson-speech/util/querystring.js

IBM Watson Speech to Text and Text to Speech SDK for web browsers.

'use strict';

/**
 * Stringify query params, Watson-style
 *
 * Why? The server that processes auth tokens currently only accepts the *exact* string, even if it's invalid for a URL.
 * Properly url-encoding percent characters causes it to reject the token.
 * So, this is a custom qs.stringify function that properly encodes everything except watson-token, passing it along verbatim
 *
 * @param {Object} queryParams
 * @return {String}
 */
exports.stringify = function stringify(queryParams) {
  return Object.keys(queryParams)
    .map(function(key) {
      return key + '=' + (key === 'watson-token' ? queryParams[key] : encodeURIComponent(queryParams[key])); // the server chokes if the token is correctly url-encoded
    })
    .join('&');
};