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merged 3 commits into from
Jun 6, 2018
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Updating SFC example #21

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Updating SFC example
tpetrina Jun 6, 2018
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add detail/summary wrapper
tsiq-swyx Jun 6, 2018
6fc57d6
add attribution
tsiq-swyx Jun 6, 2018
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16 changes: 14 additions & 2 deletions README.md
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Expand Up @@ -93,7 +93,7 @@ Please PR or [File an issue](https://github.com/sw-yx/react-typescript-cheatshee

## Stateless Functional Components

*Contributed by: [@jasanst](https://github.com/sw-yx/react-typescript-cheatsheet/pull/9)*
*Contributed by: [@jasanst](https://github.com/sw-yx/react-typescript-cheatsheet/pull/9) and [@tpetrina](https://github.com/sw-yx/react-typescript-cheatsheet/pull/21)*

You can specify the type of props as you destructure them:

Expand All @@ -107,10 +107,22 @@ Or you can use the provided generic type for functional components:
const App: React.SFC<{ message: string }> = ({ message }) => <div>{message}</div>;
```

Quite frankly I prefer the former pattern as it's shorter.
<details>

<summary><b>Discussion</b></summary>

The former pattern is shorter, so why would people use `React.SFC` at all? If you need to use `children` property inside the function body, in the former case it has to be added explicitly. `SFC<T>` already includes the correctly typed `children` property which then doesn't have to become part of your type.

```tsx
const Title: React.SFC<{ title: string }> = ({ children, title }) => (
<div title={title}>{children}</div>
);
```

[Something to add? File an issue](https://github.com/sw-yx/react-typescript-cheatsheet/issues/new).

</details>

## Stateful Class-based Components

Within Typescript, `React.Component` is a generic type (aka `React.Component<PropType, StateType>`), so you actually want to provide it with prop and (optionally) state types:
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