[Feature] Fallback if missing keys

[mwskwong]

So let say i18next-localstorage-backend cached the following resource:

{
     "keyA": "valueA
}

Current Behavior

If the code request for t("keyB"), it will return the default value and will not fallback to other backends.

Feature Request

If the code request for t("keyB"), is it possible to fallback to the next backend (e.g. i18next-xhr-backend)?

[jamuhl]

Won't work. On a per key level but per namespace: https://github.com/i18next/i18next-multiload-backend-adapter

• A request to load from backend comes before accessing t
• A key is handled missed if not found

There are two ways to achieve what you like:

a) before going to missed path doing a request to via xhr to find keyB -> bad idea, async, slow -> accessing t is sync
b) access xhr backend after taking from cache and merge that into the content of the localStorage cached loaded translations -> removes the value of the cache (only acts now as a first fast preload)

What is your use case? Is changing the version in localStorage cache or setting cache duration not sufficient?

[wong2]

+1 on this feature