data-provider-temporary/examples/message/node_modules/stream-http/test/server/static/test-polyfill.js

Library that helps with server-to-client synchronization of data

if (!String.prototype.trim) {
  (function() {
    // Make sure we trim BOM and NBSP
    var rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g;
    String.prototype.trim = function() {
      return this.replace(rtrim, '');
    };
  })();
}