the request won't break even on throwing error

[mhamri]

I'm testing this addon out and I see that even throwing error wont' break fetch

throw `can't connect`;
return `{"error":"can't connect"}` ;

1- how to change response body?
2- how to change response code and cause an error?
3- how to correctly log, since I can't see the throw message in the console

[dangkyokhoang]

Your code should work. Just make sure the URL filters match the requests you're going to modify.

Altering response:

And logging:

[mhamri]

for the example you've provided, as you can see in the image below, throw doesn't show any message in the console

if i have only this it works just fine

return `can't connect` ;

and as I mentioned in the first post, if I throw an error, even if I don't see the error in the console for some reason why still the page load? my expectation is to see the error or page not found or some other error

[dangkyokhoang]

for the example you've provided, as you can see in the image below, throw doesn't show any message in the console

Errors are logged to the extension's console, not the target pages'.

and as I mentioned in the first post, if I throw an error, even if I don't see the error in the console for some reason why still the page load? my expectation is to see the error or page not found or some other error

This is by design. Scripts modify responses, and when they fail to (i.e: when they throw an error), the responses should not be touched.

In case you want to display some error message when your script throws, just wrap it with a try catch.

[mhamri]

thanks for response,

how do you open extensions dev tools? i couldn't find an easy way to open it (i managed to open it, but still want to know how do you suggest)

I also wanted to set status code to 501, do you have any suggestion how to do it?

[dangkyokhoang]

how do you open extensions dev tools? i couldn't find an easy way to open it (i managed to open it, but still want to know how do you suggest)

Errors are logged to the extension's Options page's console to be precise.

I also wanted to set status code to 501, do you have any suggestion how to do it?

There doesn't seem a way to change status codes. You can try altering headers and responses or redirecting requests to your custom server to see if it works.