@fsi-open/mock-socket/src/helpers/delay.js

Javascript mocking library for websockets and socket.io

/*
 * This delay allows the thread to finish assigning its on* methods
 * before invoking the delay callback. This is purely a timing hack.
 * http://geekabyte.blogspot.com/2014/01/javascript-effect-of-setting-settimeout.html
 *
 * @param {callback: function} the callback which will be invoked after the timeout
 * @parma {context: object} the context in which to invoke the function
 */
export default function delay(callback, context) {
  setTimeout(timeoutContext => callback.call(timeoutContext), 4, context);
}