Merge branch 'fix-broken-yarn-deps' into 'master'

Fix broken Yarn dependencies

Closes #33886 and #34944

See merge request !13614

.gitlab-ci.yml

@@ -259,7 +259,7 @@ setup-test-env:
     <<: *default-cache
   script:
     - node --version
-    - yarn install --pure-lockfile --cache-folder .yarn-cache
+    - yarn install --frozen-lockfile --cache-folder .yarn-cache
     - bundle exec rake gettext:po_to_json
     - bundle exec rake gitlab:assets:compile
     - bundle exec ruby -Ispec -e 'require "spec_helper" ; TestEnv.init'
@@ -508,7 +508,7 @@ gitlab:assets:compile:
     WEBPACK_REPORT: "true"
     NO_COMPRESSION: "true"
   script:
-    - yarn install --pure-lockfile --production --cache-folder .yarn-cache
+    - yarn install --frozen-lockfile --production --cache-folder .yarn-cache
     - bundle exec rake gettext:po_to_json
     - bundle exec rake gitlab:assets:compile
   artifacts:

config/webpack.config.js

@@ -276,14 +276,9 @@ if (IS_PRODUCTION) {
     })
   );
 
-  // zopfli requires a lot of compute time and is disabled in CI
+  // compression can require a lot of compute time and is disabled in CI
   if (!NO_COMPRESSION) {
-    // gracefully fall back to gzip if `node-zopfli` is unavailable (e.g. in CentOS 6)
-    try {
-      config.plugins.push(new CompressionPlugin({ algorithm: 'zopfli' }));
-    } catch(err) {
-      config.plugins.push(new CompressionPlugin({ algorithm: 'gzip' }));
-    }
+    config.plugins.push(new CompressionPlugin());
   }
 }
 

package.json

@@ -20,7 +20,7 @@
     "babel-preset-latest": "^6.24.0",
     "babel-preset-stage-2": "^6.22.0",
     "bootstrap-sass": "^3.3.6",
-    "compression-webpack-plugin": "^0.3.2",
+    "compression-webpack-plugin": "^1.0.0",
     "copy-webpack-plugin": "^4.0.1",
     "core-js": "^2.4.1",
     "cropper": "^2.3.0",
@@ -63,7 +63,7 @@
     "vue-loader": "^11.3.4",
     "vue-resource": "^1.3.4",
     "vue-template-compiler": "^2.2.6",
-    "webpack": "^3.5.4",
+    "webpack": "^3.5.5",
     "webpack-bundle-analyzer": "^2.8.2",
     "webpack-stats-plugin": "^0.1.5"
   },