update CRA and other dependencies (#274)

Author: rjwats

Diff for: interface/config-overrides.js

@@ -1,34 +1,28 @@
-const ManifestPlugin = require('webpack-manifest-plugin');
-const WorkboxWebpackPlugin = require('workbox-webpack-plugin');
+const { WebpackManifestPlugin } = require('webpack-manifest-plugin');
 const MiniCssExtractPlugin = require('mini-css-extract-plugin');
-const CompressionPlugin = require('compression-webpack-plugin');
 const ProgmemGenerator = require('./progmem-generator.js');
+const TerserPlugin = require('terser-webpack-plugin');
 
 module.exports = function override(config, env) {
   if (env === "production") {
     // rename the ouput file, we need it's path to be short, for embedded FS
     config.output.filename = 'js/[id].[chunkhash:4].js';
     config.output.chunkFilename = 'js/[id].[chunkhash:4].js';
 
-    // take out the manifest and service worker plugins
-    config.plugins = config.plugins.filter((plugin) => !(plugin instanceof ManifestPlugin));
-    config.plugins = config.plugins.filter((plugin) => !(plugin instanceof WorkboxWebpackPlugin.GenerateSW));
+    // take out the manifest plugin
+    config.plugins = config.plugins.filter((plugin) => !(plugin instanceof WebpackManifestPlugin));
 
     // shorten css filenames
     const miniCssExtractPlugin = config.plugins.find((plugin) => plugin instanceof MiniCssExtractPlugin);
     miniCssExtractPlugin.options.filename = "css/[id].[contenthash:4].css";
     miniCssExtractPlugin.options.chunkFilename = "css/[id].[contenthash:4].c.css";
 
+    // don't emit license file
+    const terserPlugin = config.optimization.minimizer.find((plugin) => plugin instanceof TerserPlugin);
+    terserPlugin.options.extractComments = false;
+
     // build progmem data files
     config.plugins.push(new ProgmemGenerator({ outputPath: "../lib/framework/WWWData.h", bytesPerLine: 20 }));
-
-    // add compression plugin, compress javascript
-    config.plugins.push(new CompressionPlugin({
-      filename: "[file].gz",
-      algorithm: "gzip",
-      test: /\.(js)$/,
-      deleteOriginalAssets: true
-    }));
   }
   return config;
 };