Backport of webpack improvements. Build highest quality sourcemaps when

requested, but drop minimzation completely for dev.

Drop console statements in production build.

client/webpack.config.js

@@ -7,6 +7,7 @@ const CssMinimizerPlugin = require("css-minimizer-webpack-plugin");
 const DuplicatePackageCheckerPlugin = require("@cerner/duplicate-package-checker-webpack-plugin");
 const { DumpMetaPlugin } = require("dumpmeta-webpack-plugin");
 const TsconfigPathsPlugin = require("tsconfig-paths-webpack-plugin");
+const TerserPlugin = require("terser-webpack-plugin");
 
 const scriptsBase = path.join(__dirname, "src");
 const testsBase = path.join(__dirname, "tests");
@@ -32,6 +33,27 @@ module.exports = (env = {}, argv = {}) => {
     // environment name based on -d, -p, webpack flag
     const targetEnv = process.env.NODE_ENV == "production" || argv.mode == "production" ? "production" : "development";
 
+    let minimizations = {};
+    if (targetEnv == "production") {
+        minimizations = {
+            minimize: true,
+            minimizer: [
+                new TerserPlugin({
+                    terserOptions: {
+                        compress: {
+                            drop_console: true,
+                        },
+                    },
+                }),
+                new CssMinimizerPlugin(),
+            ],
+        };
+    } else {
+        minimizations = {
+            minimize: false,
+        };
+    }
+
     const buildconfig = {
         mode: targetEnv,
         entry: {
@@ -84,8 +106,7 @@ module.exports = (env = {}, argv = {}) => {
                     },
                 },
             },
-            minimize: true,
-            minimizer: [`...`, new CssMinimizerPlugin()],
+            ...minimizations,
         },
         module: {
             rules: [
@@ -272,8 +293,8 @@ module.exports = (env = {}, argv = {}) => {
         },
     };
 
-    if (process.env.GXY_BUILD_SOURCEMAPS || buildconfig.mode == "development") {
-        buildconfig.devtool = "eval-cheap-source-map";
+    if (process.env.GXY_BUILD_SOURCEMAPS) {
+        buildconfig.devtool = "source-map";
     }
 
     return buildconfig;