Whichever widget package you import,
Dart pulls in only the widgets that are used in your app.

For more information, see the Flutter Widget Catalog.

What is the equivalent of the React Native “Hello world!” app in Flutter?

In React Native, the HelloWorldApp class extends React.Component and
implements the render method by returning a view component.

// React Native

import

React

from

react

import

StyleSheet

Text

View

from

react-native

export

default

class

App

extends

React

Component

render

()

return

View

style

styles

container