@lifaon/rx-js-light/cjs/src/misc/helpers/set-immediate/get-register-immediate-implementation.cjs

Blazing fast Observables

"use strict";
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.getRegisterImmediateImplementation = void 0;
var message_channel_implementation_1 = require("./message-channel-implementation.cjs");
var next_tick_implementation_1 = require("./next-tick-implementation.cjs");
var post_message_implementation_1 = require("./post-message-implementation.cjs");
var ready_state_change_implementation_1 = require("./ready-state-change-implementation.cjs");
var set_timeout_implementation_1 = require("./set-timeout-implementation.cjs");
function canUsePostMessage(global) {
  if (global.postMessage && !global.importScripts) {
    var postMessageIsAsynchronous_1 = true;
    var oldOnMessage = global.onmessage;
    global.onmessage = function () {
      postMessageIsAsynchronous_1 = false;
    };
    global.postMessage('', '*');
    global.onmessage = oldOnMessage;
    return postMessageIsAsynchronous_1;
  } else {
    return false;
  }
}
function getRegisterImmediateImplementation(global) {
  if (({}).toString.call(global.process) === '[object process]') {
    return (0, next_tick_implementation_1.nextTickImplementation)(global.process);
  } else if (canUsePostMessage(global)) {
    return (0, post_message_implementation_1.postMessageImplementation)(global);
  } else if (global.MessageChannel) {
    return (0, message_channel_implementation_1.messageChannelImplementation)();
  } else if (global.document && ('onreadystatechange' in global.document.createElement('script'))) {
    return (0, ready_state_change_implementation_1.readyStateChangeImplementation)(global);
  } else {
    return (0, set_timeout_implementation_1.setTimeoutImplementation)();
  }
}
exports.getRegisterImmediateImplementation = getRegisterImmediateImplementation;