From 7a4a4b591c6735adfca21ddcdbad9d7c3f4d933c Mon Sep 17 00:00:00 2001
From: soupette <cyril.lpz@gmail.com>
Date: Mon, 3 May 2021 16:33:46 +0200
Subject: [PATCH] Add webpack plugin to check duplicate deps

Signed-off-by: soupette <cyril.lpz@gmail.com>
---
 packages/core/admin/package.json          |  4 +++-
 packages/core/admin/webpack.config.dev.js |  7 +++++++
 yarn.lock                                 | 22 ++++++++++++++++++++--
 3 files changed, 30 insertions(+), 3 deletions(-)

diff --git a/packages/core/admin/package.json b/packages/core/admin/package.json
index 3164fe7a87..a6337e611a 100644
--- a/packages/core/admin/package.json
+++ b/packages/core/admin/package.json
@@ -10,7 +10,8 @@
     "test": "echo \"no tests yet\"",
     "develop": "webpack serve --config webpack.config.dev.js --progress profile",
     "develop:ce": "STRAPI_DISABLE_EE=true webpack serve --config webpack.config.dev.js --progress profile",
-    "analyze:bundle": "ANALYZE_BUNDLE=true webpack --config webpack.config.dev.js"
+    "analyze:bundle": "ANALYZE_BUNDLE=true webpack --config webpack.config.dev.js",
+    "analyze:deps": "ANALYZE_DEPS=true webpack serve --config webpack.config.dev.js --progress profile"
   },
   "main": "index.js",
   "dependencies": {
@@ -131,6 +132,7 @@
   "license": "SEE LICENSE IN LICENSE",
   "gitHead": "231263a3535658bab1e9492c6aaaed8692d62a53",
   "devDependencies": {
+    "duplicate-dependencies-webpack-plugin": "0.2.0",
     "webpack-bundle-analyzer": "4.4.1"
   }
 }
diff --git a/packages/core/admin/webpack.config.dev.js b/packages/core/admin/webpack.config.dev.js
index a3bad9c90e..d5420934b0 100644
--- a/packages/core/admin/webpack.config.dev.js
+++ b/packages/core/admin/webpack.config.dev.js
@@ -2,10 +2,13 @@
 
 const path = require('path');
 const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
+const { DuplicateReporterPlugin } = require('duplicate-dependencies-webpack-plugin');
+
 const webpackConfig = require('./webpack.config.js');
 
 module.exports = () => {
   const analyzeBundle = process.env.ANALYZE_BUNDLE;
+  const analyzeDuplicateDependencies = process.env.ANALYZE_DEPS;
   const entry = path.join(__dirname, 'admin', 'src', 'app.js');
   const dest = path.join(__dirname, 'build');
 
@@ -32,6 +35,10 @@ module.exports = () => {
     config.plugins.push(new BundleAnalyzerPlugin());
   }
 
+  if (analyzeDuplicateDependencies === 'true') {
+    config.plugins.push(new DuplicateReporterPlugin());
+  }
+
   return {
     ...config,
     devServer: {
diff --git a/yarn.lock b/yarn.lock
index 4eab48822a..2d6dbe21ef 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7800,6 +7800,19 @@ duplexify@^3.4.2, duplexify@^3.5.0, duplexify@^3.6.0:
     readable-stream "^2.0.0"
     stream-shift "^1.0.0"
 
+duplicate-dependencies-webpack-plugin@0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/duplicate-dependencies-webpack-plugin/-/duplicate-dependencies-webpack-plugin-0.2.0.tgz#3fd5b5c310c1f6ea16c3ba5b73f34f420697be60"
+  integrity sha512-qeyxzZApFEwD2JONAUNEojHYkjxeXkJdJ+X9g67geYmMddb1SaWRCDRA/FmQTxHsHvebMwmUVxSMguRjyloCPw==
+  dependencies:
+    boxen "^4.2.0"
+    chalk "^3.0.0"
+    is-path-inside "^3.0.2"
+    pretty-bytes "^5.3.0"
+    string-width "^4.2.0"
+    tapable "^1.1.3"
+    text-table "^0.2.0"
+
 ecc-jsbn@~0.1.1:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/ecc-jsbn/-/ecc-jsbn-0.1.2.tgz#3a83a904e54353287874c564b7549386849a98c9"
@@ -11129,7 +11142,7 @@ is-path-inside@^2.1.0:
   dependencies:
     path-is-inside "^1.0.2"
 
-is-path-inside@^3.0.1:
+is-path-inside@^3.0.1, is-path-inside@^3.0.2:
   version "3.0.3"
   resolved "https://registry.yarnpkg.com/is-path-inside/-/is-path-inside-3.0.3.tgz#d231362e53a07ff2b0e0ea7fed049161ffd16283"
   integrity sha512-Fd4gABb+ycGAmKou8eMftCupSir5lRxqf4aD/vd0cD2qc4HL07OjCeuHMr8Ro4CoMaeCKDB0/ECBOVWjTwUvPQ==
@@ -16016,7 +16029,7 @@ prettier@^1.18.2:
   resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.19.1.tgz#f7d7f5ff8a9cd872a7be4ca142095956a60797cb"
   integrity sha512-s7PoyDv/II1ObgQunCbB9PdLmUcBZcnWOcxDh7O0N/UwDEsHyqkW+Qh28jW+mVuCdx7gLB0BotYI1Y6uI9iyew==
 
-pretty-bytes@^5.1.0:
+pretty-bytes@^5.1.0, pretty-bytes@^5.3.0:
   version "5.6.0"
   resolved "https://registry.yarnpkg.com/pretty-bytes/-/pretty-bytes-5.6.0.tgz#356256f643804773c82f64723fe78c92c62beaeb"
   integrity sha512-FFw039TmrBqFK8ma/7OL3sDz/VytdtJr044/QUJtH0wK9lb9jLq9tJyIxUwtQJHwar2BqtiA4iCWSwo9JLkzFg==
@@ -19489,6 +19502,11 @@ table@^6.0.4, table@^6.0.7:
     slice-ansi "^4.0.0"
     string-width "^4.2.0"
 
+tapable@^1.1.3:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/tapable/-/tapable-1.1.3.tgz#a1fccc06b58db61fd7a45da2da44f5f3a3e67ba2"
+  integrity sha512-4WK/bYZmj8xLr+HUCODHGF1ZFzsYffasLUgEiMBY4fgtltdO6B4WJtlSbPaDTLpYTcGVwM2qLnFTICEcNxs3kA==
+
 tapable@^2.0.0, tapable@^2.1.1, tapable@^2.2.0:
   version "2.2.0"
   resolved "https://registry.yarnpkg.com/tapable/-/tapable-2.2.0.tgz#5c373d281d9c672848213d0e037d1c4165ab426b"