[220729] 리액트 실강

react

map() 는 key 이 있어야 한다.

 

App.js

import { ThemeProvider } from 'styled-component'
// import Refs from './component/220727/Refs'
// import Test from './component/220726/Test'
import Button from './component/220729/Button'
import theme from './styles/theme'
import GlobalStyle from './styles/globalStyle'

function App() {
  return (
    <ThemeProvider theme={theme}>
      {/* <Refs />
      <Test /> */}
      <GlobalStyle />
      <Button />
      {/* <Button size="large" bg="red" /> */}
    </ThemeProvider>
  )
}

export default App