What is a good first custom hook to build?
useFetch. If you fetch data in multiple components with the same loading, error, and data pattern, extracting it into a useFetch hook is a perfect first custom hook that immediately reduces duplication.
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Identify repeated logic, name a function starting with 'use', move the state and effects inside, accept arguments for flexibility, return what the component needs, and use it in a component like you would use useState. Follow the rules of hooks inside it.
Whatever makes it flexible for different uses. A useFetch hook accepts a URL. A useForm hook might accept initial values and a validation function. Arguments let one hook serve many components.
What the calling component needs, in the clearest form. A useFetch hook typically returns data, loading, and error as an array or object. Choose the form that makes the calling code clearest.
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