feat: allow to specify a scope for text/partytown scripts

[aaa123eee]

What is it?

• Feature / enhancement
• Bug
• Docs / tests

Description

We have our custom "text/partytown" scripts added to the document which meant to be executed only in the worker scope.

If the fallback happens, we have to check an execution scope to avoid errors,
like typeof WorkerGlobalScope === 'undefined'

I suggest more elegant way of settling a scope for a script

<script type="text/partytown"  ptScope="worker" src="/worker-custom-logic.js"></script>

Checklist:

• My code follows the developer guidelines of this project
• I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• Added new tests to cover the fix / functionality

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Name	Status	Preview	Comments	Updated (UTC)
partytown	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Sep 11, 2024 9:24pm

[gioboa]

@aaa123eee so if I understand correctly, you would like a discriminant to define which scripts to re-execute in case of fallback and which not, right?

[aaa123eee]

@aaa123eee so if I understand correctly, you would like a discriminant to define which scripts to re-execute in case of fallback and which not, right?

generally yes

currently fallback logic takes all scripts to the main thread regardless a need to do so

[gioboa]

Can you share some examples please?

[aaa123eee]

ouch, seems that I forgot about this one and removed the repo, I will redo it

Can you share some examples please?

@gioboa here are usages examples:

• We have custom storage where we keep data to reduce communication with worker. We create a type="text/partytown" script to handle it from the worker side. Once fallback logic kicks in, we have unnecessary code in the main thread
• We found data loss in our tracking because of delays with a busy worker thread. We create a logic that keeps control over tracking events and save data until it is safely sent. Again, there's a logic that only belongs to the worker and should not hit main thread

[gioboa]

I see, thanks for your explanation.