jwt - 找不到模块 : Error: Can't resolve 'crypto' in '/opt/lampp/htdocs/angular-testing-app/node_modules/jwa'

Question

我将在我的 Angular6 项目中安装 jsonwebtoken 模块npm i jsonwebtoken。安装了 jsonwebtoken 模块依赖项 jwa，但该 index.js 文件 crypto require 错误无法解析“crypto”，但我已经安装了 crypto 模块。

请帮助解决问题。

我的错误:

ERROR in ./node_modules/jwa/index.js
Module not found: Error: Can't resolve 'crypto' in '/opt/lampp/htdocs/angular-testing-app/node_modules/jwa'
ERROR in ./node_modules/jws/lib/sign-stream.js
Module not found: Error: Can't resolve 'stream' in '/opt/lampp/htdocs/angular-testing-app/node_modules/jws/lib'
ERROR in ./node_modules/jws/lib/verify-stream.js
Module not found: Error: Can't resolve 'stream' in '/opt/lampp/htdocs/angular-testing-app/node_modules/jws/lib'
ERROR in ./node_modules/jws/lib/data-stream.js
Module not found: Error: Can't resolve 'stream' in '/opt/lampp/htdocs/angular-testing-app/node_modules/jws/lib'

Answer 1

我遇到了和你一样的问题，我也解决了。您可以按照以下步骤操作:

1. 将此文件添加到根目录

patch.js

const fs = require('fs');
const f = 'node_modules/@angular-devkit/build-angular/src/angular-cli-files/models/webpack-configs/browser.js';

fs.readFile(f, 'utf8', function (err,data) {
  if (err) {
    return console.log(err);
  }
  var result = data.replace(/node: false/g, 'node: {crypto: true, stream: true}');

  fs.writeFile(f, result, 'utf8', function (err) {
    if (err) return console.log(err);
  });
});

将此命令添加到package.json文件

package.json

{...
  "scripts": {
    "postinstall": "node patch.js",
    ...
  }
}

引用:https://gist.github.com/niespodd/1fa82da6f8c901d1c33d2fcbb762947d