1. 安装fontawesome

npm install @fortawesome/fontawesome-svg-core @fortawesome/free-solid-svg-icons @fortawesome/react-fontawesome

2. 编辑_app.js

import '@fortawesome/fontawesome-svg-core/styles.css' // import Font Awesome CSS
import {config} from '@fortawesome/fontawesome-svg-core'
config.autoAddCss = false // Tell Font Awesome to skip adding the CSS automatically since it's being imported above

const App = ({Component, pageProps}) => {
  return <Component {...pageProps} />
}

export default App

3. 在组件中使用FontAwesomeIcon

// index.js

// Import the FontAwesomeIcon component
import {FontAwesomeIcon} from '@fortawesome/react-fontawesome'

// import the icons you need
import {
  faSearch,
  faAmbulance,
  faAnchor
} from '@fortawesome/free-solid-svg-icons'

const Home = (props) => {
  return (
    <div>
      <FontAwesomeIcon icon={faSearch} style={{fontSize: 100, color: 'blue'}} />

      <FontAwesomeIcon
        icon={faAmbulance}
        style={{fontSize: 100, color: 'orange'}}
      />

      <FontAwesomeIcon
        icon={faAnchor}
        style={{fontSize: 100, color: 'green'}}
      />
    </div>
  )
}

export default Home

4. 效果