Shared storage between checkout ui extensions

[adkhamllama]

Hello, I have an issue with useStorage hook in checkout ui extension. I've been trying to write data in one block and read data in second block, but all I get is null. Docs says that data is shared across all activated extension targets of this extension. So same type blocks can read each others data, but not different blocks.
Would it be possible to share data between different blocks as well?

[Liam]

Hi Adkhamllama,

By different blocks do you mean different extension? I believe the scope is limited to extension in terms of sharing data, so two different extensions would not share data. Also, make sure you're not using an older API version:

In versions 2023-07 and earlier, each activated extension target had its own storage.

See our docs: https://shopify.dev/docs/api/checkout-ui-extensions/2024-07/apis/storage

[adkhamllama · Accepted solution]

Yes, I wanted to connect 2 checkout ui extensions Storage API didn't help. But I found a different way to communicate - through metafields.