From 3a9d81cf57cbb6f998951913945c2846a9af2d8f Mon Sep 17 00:00:00 2001
From: SleepWalker <mybox@udf.su>
Date: Sat, 9 Nov 2019 14:13:24 +0200
Subject: [PATCH] Minor build performance improvement for dev mode

---
 package.json      | 1 +
 webpack.config.js | 6 ++++++
 yarn.lock         | 5 +++++
 3 files changed, 12 insertions(+)

diff --git a/package.json b/package.json
index 77dddc0..853f1e7 100644
--- a/package.json
+++ b/package.json
@@ -98,6 +98,7 @@
     "csp-webpack-plugin": "^2.0.2",
     "css-loader": "^3.0.0",
     "cssnano": "^4.1.10",
+    "eager-imports-webpack-plugin": "^1.0.0",
     "enzyme": "^3.8.0",
     "enzyme-adapter-react-16": "^1.7.1",
     "eslint": "^4.0.0",
diff --git a/webpack.config.js b/webpack.config.js
index f9ae67b..17665d7 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -11,6 +11,7 @@ const SitemapPlugin = require('sitemap-webpack-plugin').default;
 const CSPPlugin = require('csp-webpack-plugin');
 const WebpackBar = require('webpackbar');
 const SpeedMeasurePlugin = require('speed-measure-webpack-plugin');
+const EagerImportsPlugin = require('eager-imports-webpack-plugin').default;
 
 const SUPPORTED_LANGUAGES = Object.keys(require('./src/i18n/index.json'));
 const localeFlags = require('./src/components/i18n/localeFlags').default;
@@ -275,6 +276,11 @@ if (isProduction) {
     };
 } else {
     webpackConfig.plugins.push(
+        // force webpack to use mode: eager chunk imports in dev mode
+        // this will improve build performance
+        // this mode will be default for dev builds in webpack 5
+        new EagerImportsPlugin(),
+
         new webpack.DllReferencePlugin({
             context: __dirname,
             manifest: require('./dll/vendor.json')
diff --git a/yarn.lock b/yarn.lock
index 8d85982..29e5261 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3417,6 +3417,11 @@ duplexify@^3.4.2, duplexify@^3.6.0:
     readable-stream "^2.0.0"
     stream-shift "^1.0.0"
 
+eager-imports-webpack-plugin@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/eager-imports-webpack-plugin/-/eager-imports-webpack-plugin-1.0.0.tgz#c78d0ab0309909330b14618fdd5942aa2c835d38"
+  integrity sha512-CyqTedChn2zYuqscxtr2e491lL3Gw+1Mgoy4R+TiX8S2x2DtWkdCjqmhrmq2+82EuKAdONZW4FpLZOdo64Jwhw==
+
 ecc-jsbn@~0.1.1:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/ecc-jsbn/-/ecc-jsbn-0.1.2.tgz#3a83a904e54353287874c564b7549386849a98c9"