Function schedulePerformWorkUntilDeadline

docs/index.js:2670–2672

()

      startTime = -1;
    if ("function" === typeof localSetImmediate)
      var schedulePerformWorkUntilDeadline = function () {
        localSetImmediate(performWorkUntilDeadline);
      };
    else if ("undefined" !== typeof MessageChannel) {
      var channel = new MessageChannel(),
        port = channel.port2;