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webpack.config.js
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webpack.config.js
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const HtmlWebpackPlugin = require("html-webpack-plugin");
const ESLintPlugin = require("eslint-webpack-plugin");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const autoprefixer = require("autoprefixer");
const postcssPresets = require("postcss-preset-env");
const ImageminPlugin = require("imagemin-webpack-plugin").default;
// Reference: https://webpack.js.org/plugins/copy-webpack-plugin/
const CopyPlugin = require("copy-webpack-plugin");
const Dotenv = require("dotenv-webpack");
const env = process.env.NODE_ENV || "development";
// set to 'production' or 'development' in your env
const finalCSSLoader = env === "production" ? MiniCssExtractPlugin.loader : { loader: "style-loader" };
module.exports = {
mode: env,
output: { publicPath: "/" },
entry: ["./src"], // this is where our app lives
devtool: "source-map", // this enables debugging with source in chrome devtools
devServer: { hot: true, historyApiFallback: true },
module: {
rules: [
{
test: /\.js$/,
exclude: /node_modules/,
use: [{ loader: "babel-loader" }],
},
{
test: /\.s?css/,
use: [
finalCSSLoader,
{
loader: "css-loader",
options: {
sourceMap: true,
},
},
{
loader: "postcss-loader",
ident: "postcss",
options: {
sourceMap: true,
postcssOptions: {
plugins: [autoprefixer(), postcssPresets({ browsers: "last 2 versions" })],
},
},
},
{
loader: "sass-loader",
options: {
sourceMap: true,
},
},
],
},
{
test: /\.(jpe?g|png|gif|svg|ico)$/,
type: "asset/resource",
},
],
},
plugins: [
// Allow webpack to pickup all environment variables when deployed to Netlify
// https://answers.netlify.com/t/cant-access-environment-variables/20314/12
new Dotenv({
systemvars: true,
}),
new MiniCssExtractPlugin({
filename: "[name].css",
}),
new ESLintPlugin({}),
new HtmlWebpackPlugin({
template: "./src/index.html",
filename: "./index.html",
favicon: "./src/app/images/favicon.png",
}),
new ImageminPlugin({
disable: process.env.NODE_ENV !== "production", // Disable during development
pngquant: {
quality: "95-100",
},
svgo: {},
}),
new CopyPlugin({
patterns: [
{ from: "./src/app/images", to: "images" },
{ from: "./src/app/data", to: "data" },
],
}),
],
};