失败是因为原生 React 运行时不包含 Node 标准库

Question

at 的包node_modules\crypto-js\core.js尝试导入 Node 标准库模块crypto。它失败了，因为本机 React 运行时不包含 Node 标准库。了解更多信息，请访问https://docs.expo.io/workflow/using-libraries/#using-third-party-libraries

运行的时候出现这个错误npm start

Answer 1

对于世博会而不是加密，您可以使用expo-crypto 您可以按如下方式安装它 expo install expo-crypto

在你的代码中

import React, { useEffect } from 'react';
import { StyleSheet, View, Text } from 'react-native';
import * as Crypto from 'expo-crypto';
  
export default function App() {
  useEffect(() => {
    (async () => {
      const digest = await Crypto.digestStringAsync(
        Crypto.CryptoDigestAlgorithm.SHA256,
        'Github stars are neat'
      );
      console.log('Digest: ', digest);
      /* Some crypto operation... */
    })();
  }, []);
...

as from expo documentation