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May 5, 2022 08:29
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React useContext hook but with a safe type check that makes sure context is not undefined.
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| import { Context, useContext } from 'react'; | |
| export const useContextSafe = <TContext>( | |
| context: Context<TContext> | |
| ): NonNullable<TContext> => { | |
| const ctxValue = useContext(context); | |
| if (!ctxValue) { | |
| throw new Error( | |
| `Cannot read ${context.displayName} context. You may have forgot to wrap it with the Provider` | |
| ); | |
| } | |
| return ctxValue as NonNullable<TContext>; | |
| }; |
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