react-relay/lib/jest-react/enqueueTask.js

A framework for building GraphQL-driven React applications.

'use strict';

var didWarnAboutMessageChannel = false;
var enqueueTaskImpl = null;
function enqueueTask(task) {
  if (enqueueTaskImpl === null) {
    try {
      var requireString = ('require' + Math.random()).slice(0, 7);
      var nodeRequire = module && module[requireString];
      enqueueTaskImpl = nodeRequire.call(module, 'timers').setImmediate;
    } catch (_unused) {
      enqueueTaskImpl = function enqueueTaskImpl(callback) {
        if (process.env.NODE_ENV !== "production") {
          if (didWarnAboutMessageChannel === false) {
            didWarnAboutMessageChannel = true;
            if (typeof MessageChannel === 'undefined') {
              console.error('This browser does not have a MessageChannel implementation, ' + 'so enqueuing tasks via await act(async () => ...) will fail. ' + 'Please file an issue at https://github.com/facebook/react/issues ' + 'if you encounter this warning.');
            }
          }
        }
        var channel = new MessageChannel();
        channel.port1.onmessage = callback;
        channel.port2.postMessage(undefined);
      };
    }
  }
  return enqueueTaskImpl(task);
}
module.exports = enqueueTask;