createSafeContext

React chapter 50 · Mantine createSafeContext · source: mantinedev/mantine/packages/@mantine/core/src/core/utils/create-safe-context

The problem

useContext(TabsContext) returns undefined outside the provider. You get "Cannot read property active of undefined" three files away from the real bug: someone rendered Tabs.Panel without Tabs.

The pattern that fixes it

The hook throws immediately: "useTabs() was called outside <Tabs>. Wrap the tree." Mantine createSafeContext (and Radix createContextScope) fail at the call site, not at a nested property.

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