Question

我正在启动一个React应用，这是我的Webpack配置：

'use strict'

const ExtractPlugin = require('extract-text-webpack-plugin')
const HTMLPlugin = require('html-webpack-plugin')
module.exports = {
    devtool: 'eval',
    entry: `${__dirname}/src/main.js`,
    output: {
        filename: 'bundle-[hash].js',
        path: `${__dirname}/build`,
        publicPath: '/',
    },
    mode: 'development',
    performance: {
        hints: false
    },
    plugins: [
        new HTMLPlugin(),
        new ExtractPlugin('bundle-[hash].css'),
    ],
    module: {
        rules: [
            {
                test: /\.js$/,
                exclude: /node_module/,
                loader: 'babel-loader',
            },
            {
                test: /\.scss$/,
                loader: ExtractPlugin.extract(['css-loader', 'sass-loader']),
            },
        ],
    },
}

然后，我有一个package.json文件，这是依赖项：

"devDependencies": {
    "@babel/core": "^7.1.6",
    "@babel/plugin-proposal-object-rest-spread": "^7.0.0",
    "@babel/preset-env": "^7.1.6",
    "@babel/preset-react": "^7.0.0",
    "and": "0.0.3",
    "babel-cli": "^6.26.0",
    "babel-core": "^7.0.0-bridge.0",
    "babel-loader": "^8.0.4",
    "eslint": "^5.9.0",
    "install": "^0.12.2",
    "jest": "^23.6.0",
    "npm": "^6.4.1",
    "webpack-cli": "^3.1.2"
  },
  "dependencies": {
    "babel-plugin-transform-object-rest-spread": "^6.26.0",
    "babel-plugin-transform-runtime": "^6.23.0",
    "babel-preset-env": "^1.7.0",
    "css-loader": "^1.0.1",
    "extract-text-webpack-plugin": "^4.0.0-beta.0",
    "html-webpack-plugin": "^3.2.0",
    "node-sass": "^4.11.0",
    "react": "^16.6.3",
    "react-dom": "^16.6.3",
    "resolve-url-loader": "^3.0.0",
    "sass-loader": "^7.1.0",
    "webpack": "^4.25.1",
    "webpack-dev-server": "^3.1.10"
  }

我尝试了很多方法来将babel软件包更新到第7版，更改babelrc配置，等等。

该项目虽然可以编译，但是在编译开始时我得到以下消息：

跟踪：节点类型SpreadProperty已重命名为SpreadElement 在Object.isSpreadProperty

大约有几百行。打印完所有行之后，编译过程将继续进行并成功完成。

那是什么，我如何摆脱这些行？

Answer 1

这是为我解决问题的最终设置。

.babelrc

{
  "presets": [
    "@babel/preset-env",
    "@babel/preset-react"
  ],
  "plugins": [
    "@babel/plugin-proposal-object-rest-spread"
  ]
}

为了更好地理解，这是我的package.json的 devDependencies ：

"devDependencies": {
    "@babel/core": "^7.1.6",
    "@babel/plugin-proposal-object-rest-spread": "^7.0.0",
    "@babel/plugin-transform-object-assign": "^7.0.0",
    "@babel/plugin-transform-react-jsx": "^7.1.6",
    "@babel/preset-env": "^7.1.6",
    "@babel/preset-react": "^7.0.0",
    "babel-loader": "8.0.4",
    "prop-types": "15.6.2",
    "react": "^16.6.3",
    "react-dom": "^16.6.3",
    "style-loader": "^0.23.1",
    "utils": "^0.3.1",
    "webpack": "4.26.1",
    "webpack-cli": "3.1.2",
    "webpack-dev-server": "^3.1.10"
  }

这是我的 webpack.config.js 模块部分：

module: {
        rules: [
            {
                test: /\.(js|jsx)$/ ,
                exclude: /node_modules/,
                loaders: "babel-loader"
            }
        ]
    }

Answer 2

此问题是由于使用过时的

`"babel-plugin-transform-object-rest-spread"`

在package.json中更新它

`"@babel/plugin-proposal-object-rest-spread": "^7.0.0",`

并更新您的.babelrc.js文件就我而言，看起来是这样

const isTest = String(process.env.NODE_ENV) === 'test'
module.exports = {
  presets: [["@babel/env", { modules: isTest ? 'commonjs' : false }, "@babel/react"]],
  plugins: [
    'syntax-dynamic-import',
    'transform-class-properties',
    '@babel/plugin-proposal-object-rest-spread',
  ],
}

这解决了我的问题

Answer 3

就我而言，我没有实现Webpack配置，但仍然存在错误。在实施了如此多的解决方案之后，该错误是相同的，或者一旦删除了错误，就会出现另一个错误。最后，我删除了.bablerc，.babelrc和package-lock.json文件，然后运行rm -rf node_modules && npm install，然后运行react-native run-android，它对我有用。：-）

Answer 4

在我的.babelrc文件中

我正在使用插件：["transform-object-rest-spread", { "useBuiltIns": true }],

然后我将其切换为"@babel/plugin-proposal-object-rest-spread"，所有这些警告都消失了，这非常好。 `

Answer 5

如果这里没有任何作用，只需从旧的babel中删除插件即可。以我为例，删除以下传播插件已使该东西消失了。

   plugins: ["transform-object-rest-spread"]

跟踪：节点类型SpreadProperty已在Object.isSpreadProperty处重命名为SpreadElement。

5 个答案: