René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Error when initializing Child Workers","articleBody":"I tried initializing child web workers from a parent worker, and it seems to work well with the exception of the following error being thrown:\r\n\r\n```\r\nrpc-wrapper.js:20 Uncaught ReferenceError: document is not defined\r\n    at Worker.\u003canonymous\u003e (rpc-wrapper.js:20)\r\n```\r\n\r\nDigging in, it seems like its part of building up the `ready` event, although document is not in scope in the context of a WebWorker.\r\n\r\n```\r\nlet evt = document.createEvent('Event');\r\nevt.initEvent(d.method, false, false);\r\nevt.data = d.params;\r\nworker.dispatchEvent(evt);\r\n```\r\n\r\nWhat is the purpose of the `ready` event? Is there a way to build the event in a WebWorker-safe manner? I've looked into `new Event`, but that's not IE compatible.","author":{"url":"https://github.com/kevinfmoody","@type":"Person","name":"kevinfmoody"},"datePublished":"2020-06-18T00:47:30.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/99/workerize-loader/issues/99"}