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Error when initializing Child Workers

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#99 2 comments 2 reactions 0 assignees View on GitHub

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
38/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
javascript, webpack
Domain
tooling, web-dev

Research direction

Start in rpc-wrapper.js at the ready-event code around line 20 and trace how child workers are initialized from a parent worker. Check why document is accessed in that path and how the ready event is expected to behave. Done means child workers initialize without the document error while preserving the ready event and its IE compatibility.

Written by the indexing model from the issue text.

Description

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:

rpc-wrapper.js:20 Uncaught ReferenceError: document is not defined
    at Worker.<anonymous> (rpc-wrapper.js:20)

Digging in, it seems like its part of building up the ready event, although document is not in scope in the context of a WebWorker.

let evt = document.createEvent('Event');
evt.initEvent(d.method, false, false);
evt.data = d.params;
worker.dispatchEvent(evt);

What 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.

Dominant language
JavaScript
Stars
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Forks
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