"not defined" window in web worker. Is this a bug?

General Discussion
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#1

I am running into an issue trying to load a model into a web-worker via the indexedDB.

Specifically, I am getting a ReferenceError: window is not defined when trying to use: tf.loadLayersModel(“indexeddb://model_name”)

I found in the indexed_db.js file line 51
const theWindow = window || self;

however, it appears that window in a webworker is “not defined” rather than “undefined” which throws an error rather than being coerced into falsy

Just wondering if this is indeed unintended behavior

#3

It sounds like this might be the same issue described here on GitHub. Can you share what version of TensorFlow.js you’re using? If it is up to date, I’ll re-open the issue and reference your post.

In the issue, one dev suggests:

As a temporary solution, I added window = globalThis; in my worker.js file and it works.

Let me know if that workaround helps in the meantime, and then I’ll open the issue if need be.

1 Like
#4

Yes, that is pretty much how I worked around the issue too.

As I was writing my response I figured out I was not running the latest version of TF. It appears in 3.20.0 the issue has already been resolved.

Thanks for the response.

#6

Glad to hear it! I can’t wait to see what you build :slight_smile: