Question

我只是想通过NextJS和aws-ampl来运行一个基本的hello世界，但似乎是我npm安装两个库的那一刻

aws-amplify＆amp; AWS-扩增反应的

我发现缺少反应模块＆＃39; ＆安培;窗口未定义。

import React from 'react'
import Amplify from 'aws-amplify';

Amplify.configure({
    Auth: {
        // REQUIRED - Amazon Cognito Identity Pool ID
        identityPoolId: 'XX-XXXX-X:XXXXXXXX-XXXX-1234-abcd-1234567890ab',
        // REQUIRED - Amazon Cognito Region
        region: 'XX-XXXX-X',
        // OPTIONAL - Amazon Cognito User Pool ID
        userPoolId: 'XX-XXXX-X_abcd1234',
        // OPTIONAL - Amazon Cognito Web Client ID
        userPoolWebClientId: 'XX-XXXX-X_abcd1234',
    }
});

export default class extends React.Component {
    static async getInitialProps({ req }) {
        const userAgent = req ? req.headers['user-agent'] : navigator.userAgent
        return { userAgent }
    }

    render() {
        return (
            <div>
              Hello World
              <style jsx>{`

            `}</style>
            </div>
        )
    }
}

Answer 1

您需要制作某种填充物以避免window is not defined错误。也许您需要检查node_modules文件夹以查看是否正确安装了react。

polyfill示例： ```

(<any>global).window = (<any>global).window || {};
(<any>global).localStorage = (<any>global).localStorage || {
    store: {},
    getItem(key){
        if (this.store[key]) {
            return this.store[key];
        }
        return null;
    },
    setItem(key, value){
        this.store[key] = value;
    },
    removeItem(key){ delete this.store[key]; }
};

```

Answer 2

尝试一下。安装tslib，然后测试

npm安装tslib

aws是否可以放大NextJS的工作？

2 个答案: