sveltejs / svelte · Issue No. 18471

Provide hasContext function with createContext

Openby soleuniverse101opened Jun 27, 2026updated Jul 12, 20264 comments

Description

Describe the problem

I find createContext really useful but it only provides get/set functions equivalent to getContext and setContext, while missing the hasContext function. This can be painful because there is no way to check if a context exists if the key is not available. Also trying to get it will throw an error.

Describe the proposed solution

Providing a third function for createContext to return a [get, set, has] triplet.

Importance

nice to have

Relay Analysis

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The full analysis for this issue is still being assembled. Until then, the description above and the thread on GitHub are the most reliable context.