Question

Trace: The node type SpreadProperty has been renamed to SpreadElement at Object.isSpreadProperty

I'm launching a react app, and here's my Webpack configuration:

'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']),
            },
        ],
    },
}

Then, I have a package.json file, here are the dependencies:

"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"
  } 

I have tried plenty of ways of updating babel packages up to 7th version, changing babelrc config, what ever.

The project though compiles, but in the beginning of compilation I get the following message:

Trace: The node type SpreadProperty has been renamed to SpreadElement at Object.isSpreadProperty

And about of hundred rows like that. After all that rows being printed out, the compilation process proceeds and is completed successfully.

What's that and how can I get rid of this rows?

 46  29596  46
1 Jan 1970

Solution

 53

here is the final setting that solved problem for me.

.babelrc

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

For a better understanding, here is my package.json's 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"
  }

Here is my webpack.config.js module's section:

module: {
        rules: [
            {
                test: /\.(js|jsx)$/ ,
                exclude: /node_modules/,
                loaders: "babel-loader"
            }
        ]
    }
2018-11-28

Solution

 48

This issue is occurring due to using outdated

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

update this in package.json

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

and update your .babelrc.js file in my case it looks like this

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',
  ],
}

this solves my problem

2019-08-09