CODEWITHSUNDEEP
reactjswebpackecmascript-6
Kamil Lewandowski
Kamil Lewandowski

Reputation: 446

React Webpack "unexpected token" named arrow function

I have set up react fullstack environment with webpack-middleware. I have some es6 syntax in my code but I get error while state without constructor or named arrow function. For example, I want to use semantic-ui for react sort table: https://react.semantic-ui.com/collections/table#table-example-sortable And while compiling I get this error: enter image description here

I thought it is because of wrong webpack setup I attached it below.

const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = {
  entry: './client/index.js',
  output: {
    path: '/',
    filename: 'bundle.js'
  },
  module: {
    rules: [
      {
        use: 'babel-loader',
        test: /\.js$/,
        exclude: /node_modules/
      }
    ]
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: 'client/index.html'
    })
  ]
};

.babelrc

{
  "presets": ["env", "react", "es2015"]
}

Upvotes: 1

Views: 2134

Answers (1)

Michael Jungo
Michael Jungo

Reputation: 32972

You're trying to use class properties, which are currently stage 3 as part of the Class fields proposal. To be able to use them today, you have to install babel-plugin-transform-class-properties.

npm install --save-dev babel-plugin-transform-class-properties

And add it to your plugins in .babelrc.

{
  "presets": ["env", "react"],
  "plugins": ["transform-class-properties"]
}

I also removed the es2015 preset since it has been deprecated in favour of babel-preset-env, which contains everything es2015 does and more.

Upvotes: 8

Related Questions