CODEWITHSUNDEEP
reactjsreact-native
Ravi Malviya
Ravi Malviya

Reputation: 115

What does means <Props> in 'export default class App extends Component<Props>' when i create a project using react-native

I am familiar with react and now i have just created a react native project using react-native init command. I noticed in App.js file like this ,

export default class App extends Component<Props> {

}

What does mean <Props> here.?

Upvotes: 2

Views: 1212

Answers (2)

Kraylog
Kraylog

Reputation: 7563

That code uses Flow, which is a type checker for JavaScript written by Facebook.

The React documentation explains how it is used here:

We removed our dependency on prop-types and added a Flow object type named Props with the same shape as the prop types but using Flow’s static type syntax. Then we passed our new Props type into React.Component as a type argument.

The Flow type checker can then tell you if you're sending wrong types as your component props (instead of using prop-types).

Upvotes: 2

Gev
Gev

Reputation: 882

That's for Flow type. You can read about react-native's flow types here https://medium.com/react-native-training/getting-started-with-react-native-and-flow-d40f55746809

Upvotes: 1

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