Upgrade to Yarn Berry

.github/workflows/ci.yml

@@ -32,6 +32,8 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: 18
+      - name: Enable Corepack
+        run: corepack enable
       - name: Get yarn cache directory path
         id: yarn-cache-dir-path
         run: echo "dir=$(yarn config get cacheFolder)" >> $GITHUB_OUTPUT
@@ -50,7 +52,7 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-yarn-
       - name: Install yarn packages
-        run: yarn install --pure-lockfile
+        run: yarn install --immutable
 
       - name: Prepare config files
         run: |

.gitignore

@@ -46,6 +46,15 @@ node_modules/
 /yarn-error.log
 yarn-debug.log*
 .yarn-integrity
+# Ignore more Yarn files per documentation:
+# https://yarnpkg.com/getting-started/qa#which-files-should-be-gitignored
+.pnp.*
+.yarn/*
+!.yarn/patches
+!.yarn/plugins
+!.yarn/releases
+!.yarn/sdks
+!.yarn/versions
 
 # Ignore uploaded files in development
 /storage

.yarnrc.yml

@@ -0,0 +1 @@
+nodeLinker: node-modules

bin/shakapacker

@@ -2,6 +2,9 @@
 
 ENV["RAILS_ENV"] ||= "development"
 ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile", __FILE__)
+# Enable the `package_json` gem to allow the use scripts defined in `package.json`.
+# See https://github.com/shakacode/shakapacker/issues/371
+ENV["SHAKAPACKER_USE_PACKAGE_JSON_GEM"] ||= "true"
 
 require "bundler/setup"
 require "shakapacker"

bin/shakapacker-dev-server

@@ -2,6 +2,9 @@
 
 ENV["RAILS_ENV"] ||= "development"
 ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile", __FILE__)
+# Enable the `package_json` gem to allow the use scripts defined in `package.json`.
+# See https://github.com/shakacode/shakapacker/issues/371
+ENV["SHAKAPACKER_USE_PACKAGE_JSON_GEM"] ||= "true"
 
 require "bundler/setup"
 require "shakapacker"

package.json

@@ -71,5 +71,6 @@
   "scripts": {
     "webpack": "./bin/shakapacker",
     "webpack-dev-server": "./bin/shakapacker-dev-server"
-  }
+  },
+  "packageManager": "yarn@4.0.1"
 }