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CSS styles disappear after update in React app

I'm at a loss when it comes to figuring out why this is happening. Right now, I suspect this is a Webpack issue. I don't have this update problem in dev environment, but only when I build and run this code.

Basically when I am on certain pages and I update the application ... all the styles I have in the stylesheet are ignored and when I check the answer it actually just shows my index.html page.

Network response

I am importing styles in the root application, so in index.js. I know this is still happening on update because that's where my persistedState logic is going and that allows the update to work.

Here is my webpack config for a production environment. I feel like this must be a somewhat problem since the dev environment is great. Am I not thinking about other potential problems?

import webpack from 'webpack';
import path from 'path';
import ExtractTextPlugin from 'extract-text-webpack-plugin';

const GLOBALS = {
  'process.env.NODE_ENV': JSON.stringify('production')
};

export default {
  debug: true,
  devtool: 'source-map',
  noInfo: false,
  entry: [
    './src/index'
  ],
  target: 'web',
  output: {
    path: __dirname + '/dist', // Note: Physical files are only output by the production build task `npm run build`.
    publicPath: '/',
    filename: 'bundle.js'
  },
  devServer: {
    contentBase: './dist'
  },
  plugins: [
    new webpack.optimize.OccurenceOrderPlugin(),
    new webpack.DefinePlugin(GLOBALS),
    new ExtractTextPlugin('styles.css'),
    new webpack.optimize.DedupePlugin(),
    new webpack.optimize.UglifyJsPlugin()
  ],
  module: {
    loaders: [
      {test: /\.js$/, include: path.join(__dirname, 'src'), loaders: ['babel']},
      {test: /(\.css)$/, loader: ExtractTextPlugin.extract("css?sourceMap")},
      {test: /\.eot(\?v=\d+\.\d+\.\d+)?$/, loader: 'file'},
      {test: /\.(woff|woff2)$/, loader: 'url?prefix=font/&limit=5000'},
      {test: /\.ttf(\?v=\d+\.\d+\.\d+)?$/, loader: 'url?limit=10000&mimetype=application/octet-stream'},
      {test: /\.(jpe?g|png|gif|svg)$/i, loader: "file"},
      {test: /\.svg(\?v=\d+\.\d+\.\d+)?$/, loader: 'url?limit=10000&mimetype=image/svg+xml'}
    ]
  }
};

Loving thoughts or solutions to this problem!

EDIT:

Here is the webpack dev config:

import webpack from 'webpack';
import path from 'path';

export default {
  debug: true,
  devtool: 'cheap-module-eval-source-map',
  noInfo: false,
  entry: [
    //'eventsource-polyfill', // necessary for hot reloading with IE
    'babel-polyfill',
    'webpack-hot-middleware/client?reload=true', //note that it reloads the page if hot module reloading fails.
    './src/index'
  ],
  target: 'web',
  output: {
    path: __dirname + '/dist', // Note: Physical files are only output by the production build task `npm run build`.
    publicPath: '/',
    filename: 'bundle.js'
  },
  devServer: {
    contentBase: './src'
  },
  plugins: [
    new webpack.HotModuleReplacementPlugin(),
    new webpack.NoErrorsPlugin()
  ],
  module: {
    loaders: [
      {test: /\.js$/, include: path.join(__dirname, 'src'), loaders: ['babel']},
      {test: /(\.css)$/, loaders: ['style', 'css']},
      {test: /\.(jpe?g|png|gif|svg)$/i, loader: "file"},
      {test: /\.eot(\?v=\d+\.\d+\.\d+)?$/, loader: 'file'},
      {test: /\.(woff|woff2)$/, loader: 'url?prefix=font/&limit=5000'},
      {test: /\.ttf(\?v=\d+\.\d+\.\d+)?$/, loader: 'url?limit=10000&mimetype=application/octet-stream'},
      {test: /\.svg(\?v=\d+\.\d+\.\d+)?$/, loader: 'url?limit=10000&mimetype=image/svg+xml'}
    ]
  }

};

Main HTML tag:

<head>
    <meta name="viewport" content="width=device-width, initial-scale=1" charset="utf-8">
    <link rel="shortcut icon" href="favicon.ico">
    <link href="https://fonts.googleapis.com/css?family=Lato:100,300,400,700|Roboto:300,400,900" rel="stylesheet">
    <link href="https://fonts.googleapis.com/css?family=Work+Sans:300,400,500|Work+Sans:300,400,500" rel="stylesheet">
    <link rel="stylesheet" type="text/css" href="https://fonts.googleapis.com/icon?family=Material+Icons">
    <link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/6.0.0/normalize.min.css">
    <link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/bootstrap/latest/css/bootstrap.min.css">
    <link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
    <link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/slick-carousel/1.6.0/slick.min.css" />
    <link rel="stylesheet" type="text/css" href="https://cdnjs.cloudflare.com/ajax/libs/slick-carousel/1.6.0/slick-theme.min.css" />
  </head>
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1 answer


You are using the relative path to the CSS file in your HTML:

<link rel="stylesheet" href="styles.css">

When you visit /example/page/

, you try to query /example/page/styles.css

, but since that doesn't exist, your server falls back to index.html

. You use this behavior because you always want to serve the same page and your JavaScript will decide what it should do.



Similar to how you always request /bundle.js

, you also want to request /styles.css

regardless of the actual URL.

<link rel="stylesheet" href="/styles.css">

This issue only appears in your production build, because you are using style-loader

in development that injects CSS into a tag <style>

from your JavaScript.

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