Webpack 錯誤 - 無法解析 Vue.js 中的“crypto”、“http”和“https”

Question

問題背景

我正在嘗試將 Wallet Connect 添加到我們的項目（Vue.js）中，在此處形成： https ://docs.walletconnect.com/quick-start/dapps/web3-provider，我使用此命令安裝它。

將其導入我的 js 文件中

import Web3 from 'web3'
import WalletConnectProvider from '@walletconnect/web3-provider'

它顯示了這些錯誤：

ERROR  Failed to compile with 7 errors                                                                               
These dependencies were not found:

* crypto in ./node_modules/eth-lib/lib/bytes.js, ./node_modules/web3-eth-accounts/lib/index.js and 1 other
* http in ./node_modules/xhr2-cookies/dist/xml-http-request.js
* https in ./node_modules/xhr2-cookies/dist/xml-http-request.js

To install them, you can run: npm install --save crypto http https

嘗試

我安裝這些軟件包。

npm i crypto-browserify
npm i https-browserify
npm i stream-http

然后編輯我的vue.config.js文件：

resolve: {
  fallback: {
    crypto: require.resolve('crypto-browserify'),
    http: require.resolve('stream-http'),
    https: require.resolve('https-browserify'),
  },
},

並且錯誤變為：

WebpackOptionsValidationError: Invalid configuration object. Webpack has been initialised using a configuration object that does not match the API schema.
configuration.resolve has an unknown property 'fallback'. 

These properties are valid:
   object { alias?, aliasFields?, cachePredicate?, cacheWithContext?, concord?, descriptionFiles?, enforceExtension?, enforceModuleExtension?, extensions?, fileSystem?, mainFields?, mainFiles?, moduleExtensions?, modules?, plugins?, resolver?, symlinks?, unsafeCache?, useSyncFileSystemCalls? }

這是我的package.json文件的樣子：

{
  "dependencies": {
    "@walletconnect/web3-provider": "^1.7.8",
    "crypto-browserify": "^3.12.0",
    "https-browserify": "^1.0.0",
    "os": "^0.1.2",
    "stream": "^0.0.2",
    "stream-http": "^3.2.0",
    "vue": "^2.6.10",
    "web3": "^1.7.3",
  },
  "devDependencies": {
    "@vue/cli-service": "^3.7.0",
    "webpack": "^4.39.3",
    "webpack-bundle-analyzer": "^3.6.0",
    "webpack-dev-server": "^3.11.2",
    "webpack-merge": "^4.2.1",
    "webpack-node-externals": "^1.7.2",
    "webpack-plugin-hash-output": "^3.2.1",
    "webpack-spritesmith": "^1.0.1",
  }
}

而我的node版本是v10.24.1，暫時還不能升級。

v10.24.1

從上面可以看出，我已經從錯誤中安裝了建議的包（ crypto-browserify 、 stream-http和https-browserify ），並將它們包含在vue.config.js中。

我該如何解決這個問題？

Answer 1

您正在使用 Webpack 4。 fallback選項僅適用於 Webpack >=5.0.0及以后的版本。

對於 Webpack 4，考慮使用alias選項。