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frontend-app-gradebook/config/webpack.dev.config.js
Rick Reilly bff0375176 First commit
2018-10-17 11:50:17 -04:00

91 lines
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JavaScript
Executable File

// This is the dev Webpack config. All settings here should prefer a fast build
// time at the expense of creating larger, unoptimized bundles.
const Merge = require('webpack-merge');
const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const webpack = require('webpack');
const commonConfig = require('./webpack.common.config.js');
module.exports = Merge.smart(commonConfig, {
mode: 'development',
entry: [
// enable react's custom hot dev client so we get errors reported in the browser
require.resolve('react-dev-utils/webpackHotDevClient'),
path.resolve(__dirname, '../src/index.jsx'),
],
module: {
// Specify file-by-file rules to Webpack. Some file-types need a particular kind of loader.
rules: [
// The babel-loader transforms newer ES2015+ syntax to older ES5 for older browsers.
// Babel is configured with the .babelrc file at the root of the project.
{
test: /\.(js|jsx)$/,
include: [
path.resolve(__dirname, '../src'),
],
loader: 'babel-loader',
options: {
// Caches result of loader to the filesystem. Future builds will attempt to read from the
// cache to avoid needing to run the expensive recompilation process on each run.
cacheDirectory: true,
},
},
// We are not extracting CSS from the javascript bundles in development because extracting
// prevents hot-reloading from working, it increases build time, and we don't care about
// flash-of-unstyled-content issues in development.
{
test: /(.scss|.css)$/,
use: [
'style-loader', // creates style nodes from JS strings
{
loader: 'css-loader', // translates CSS into CommonJS
options: {
sourceMap: true,
},
},
{
loader: 'sass-loader', // compiles Sass to CSS
options: {
sourceMap: true,
includePaths: [
path.join(__dirname, '../node_modules'),
path.join(__dirname, '../src'),
],
},
},
],
},
// Webpack, by default, uses the url-loader for images and fonts that are required/included by
// files it processes, which just base64 encodes them and inlines them in the javascript
// bundles. This makes the javascript bundles ginormous and defeats caching so we will use the
// file-loader instead to copy the files directly to the output directory.
{
test: /\.(woff2?|ttf|svg|eot)(\?v=\d+\.\d+\.\d+)?$/,
loader: 'file-loader',
},
],
},
// Specify additional processing or side-effects done on the Webpack output bundles as a whole.
plugins: [
// Generates an HTML file in the output directory.
new HtmlWebpackPlugin({
inject: true, // Appends script tags linking to the webpack bundles at the end of the body
template: path.resolve(__dirname, '../public/index.html'),
}),
// when the --hot option is not passed in as part of the command
// the HotModuleReplacementPlugin has to be specified in the Webpack configuration
// https://webpack.js.org/configuration/dev-server/#devserver-hot
new webpack.HotModuleReplacementPlugin(),
],
// This configures webpack-dev-server which serves bundles from memory and provides live
// reloading.
devServer: {
host: '0.0.0.0',
port: 1991,
historyApiFallback: true,
hot: true,
inline: true,
},
});