v8.4.0 is released (#1040)

* Duplicate sidekiq gem entry is removed

Declared in both Gemfile and gemfiles/base.gemfile, triggering
Bundler's "listed more than once" warning.

* Explicit nil check in bulk builder field guard, rather than safe navigation

* v8.4.0 is released

Author: AlfonsoUceda

CHANGELOG.md

@@ -4,6 +4,14 @@
 
 ### New Features
 
+### Bug Fixes
+
+### Changes
+
+## 8.4.0 (2026-06-17)
+
+### New Features
+
 * [#1036](https://github.com/toptal/chewy/issues/1036): Add `Chewy.close_client` and `Chewy::ElasticClient#close` to explicitly close connections to Elasticsearch, avoiding file descriptor leaks in long-lived multi-threaded processes (e.g. Sidekiq). ([@AlfonsoUceda][])
 
 ### Bug Fixes
@@ -12,7 +20,7 @@
 
 ### Changes
 
-## 8.3.0 (2026-06-05)
+## 8.3.1 (2026-06-05)
 
 ### New Features
 

Gemfile

@@ -3,7 +3,6 @@ source 'https://rubygems.org', cooldown: 7
 gem 'activerecord'
 
 gem 'activejob', require: false
-gem 'sidekiq', require: false
 
 gem 'ruby-progressbar', require: false
 

lib/chewy/index/import/bulk_builder.rb

@@ -47,7 +47,7 @@ def crutches_for_index
         end
 
         def index_entry(object)
-          return [] if @fields&.empty?
+          return [] if @fields && @fields.empty?
 
           entry = {}
           entry[:_id] = index_object_ids[object] if index_object_ids[object]

lib/chewy/version.rb

@@ -1,3 +1,3 @@
 module Chewy
-  VERSION = '8.3.1'.freeze
+  VERSION = '8.4.0'.freeze
 end