Function installTimerFunctions

client-dist/socket.io.js:773–781

(obj, opts)

  var NATIVE_SET_TIMEOUT = globalThisShim.setTimeout;
  var NATIVE_CLEAR_TIMEOUT = globalThisShim.clearTimeout;
  function installTimerFunctions(obj, opts) {
    if (opts.useNativeTimers) {
      obj.setTimeoutFn = NATIVE_SET_TIMEOUT.bind(globalThisShim);
      obj.clearTimeoutFn = NATIVE_CLEAR_TIMEOUT.bind(globalThisShim);
    } else {
      obj.setTimeoutFn = globalThisShim.setTimeout.bind(globalThisShim);
      obj.clearTimeoutFn = globalThisShim.clearTimeout.bind(globalThisShim);
    }
  }
  // base64 encoded buffers are about 33% bigger (https://en.wikipedia.org/wiki/Base64)
  var BASE64_OVERHEAD = 1.33;
  // we could also have used `new Blob([obj]).size`, but it isn't supported in IE9