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Add custom hook for context to avoid assertions #604

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Merged
merged 6 commits into from
Jan 13, 2023
Merged

Add custom hook for context to avoid assertions #604

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73b3d95
Add custom hook for context to avoid assertions
filiptammergard Jan 9, 2023
8b1af4e
Rework context page
filiptammergard Jan 12, 2023
3f55f57
Clarify the runtime type check alternative
filiptammergard Jan 12, 2023
88c2893
Remove recommendation statement
filiptammergard Jan 12, 2023
226c1bd
Update recommendation part
filiptammergard Jan 12, 2023
6a797aa
Fix typo
filiptammergard Jan 12, 2023
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10 changes: 9 additions & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -1529,11 +1529,19 @@ export const App = () => (
<AppCtx.Provider value={sampleAppContext}>...</AppCtx.Provider>
);

const useAppContext = () => {
const appContext = useContext(AppCtx);
if (!appContext) {
throw new Error("useApp must be used within <AppCtx.Provider>.");
}
return appContext;
};

// Consume in your app
import { useContext } from "react";

export const PostInfo = () => {
const appContext = useContext(AppCtx);
const appContext = useAppContext();
return (
<div>
Name: {appContext.name}, Author: {appContext.author}, Url:{" "}
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10 changes: 9 additions & 1 deletion docs/basic/getting-started/context.md
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Original file line number Diff line number Diff line change
Expand Up @@ -28,11 +28,19 @@ export const App = () => (
<AppCtx.Provider value={sampleAppContext}>...</AppCtx.Provider>
);

const useAppContext = () => {
const appContext = useContext(AppCtx);
if (!appContext) {
throw new Error("useApp must be used within <AppCtx.Provider>.");
}
return appContext;
};

// Consume in your app
import { useContext } from "react";

export const PostInfo = () => {
const appContext = useContext(AppCtx);
const appContext = useAppContext();
return (
<div>
Name: {appContext.name}, Author: {appContext.author}, Url:{" "}
Expand Down