Merge pull request #1754 from alphagov/move-from-uglifer-to-terser

Move from Uglifier to Terser

Gemfile

@@ -15,7 +15,7 @@ gem "plek"
 gem "ratelimit"
 gem "slimmer"
 gem "sprockets-rails"
-gem "uglifier"
+gem "terser"
 
 group :development, :test do
   gem "climate_control"

Gemfile.lock

@@ -111,7 +111,7 @@ GEM
     domain_name (0.6.20240107)
     drb (2.2.1)
     erubi (1.12.0)
-    execjs (2.8.1)
+    execjs (2.9.1)
     gds-api-adapters (95.1.0)
       addressable
       link_header
@@ -603,13 +603,13 @@ GEM
       sprockets (>= 3.0.0)
     statsd-ruby (1.5.0)
     stringio (3.1.0)
+    terser (1.2.2)
+      execjs (>= 0.3.0, < 3)
     thor (1.3.1)
     timecop (0.9.8)
     timeout (0.4.1)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    uglifier (4.2.0)
-      execjs (>= 0.3.0, < 3)
     unicode-display_width (2.5.0)
     webmock (3.23.0)
       addressable (>= 2.8.0)
@@ -651,8 +651,8 @@ DEPENDENCIES
   simplecov
   slimmer
   sprockets-rails
+  terser
   timecop
-  uglifier
   webmock
 
 RUBY VERSION

config/environments/production.rb

@@ -25,7 +25,7 @@
   config.public_file_server.enabled = false
 
   # Compress JS using a preprocessor.
-  config.assets.js_compressor = :uglifier
+  config.assets.js_compressor = :terser
 
   # Do not fallback to assets pipeline if a precompiled asset is missed.
   config.assets.compile = false