feat: support Ruby 2.6 and 2.7

Author: G-Rath

.github/workflows/checks.yml

@@ -21,7 +21,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest]
-        ruby: ['3.0', '3.1', head]
+        ruby: ['2.6', '2.7', '3.0', '3.1', head]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout
@@ -42,6 +42,6 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '3.0'
+          ruby-version: '2.6'
           bundler-cache: true
       - run: bundle exec rubocop

.rubocop.yml

@@ -14,7 +14,7 @@ AllCops:
   NewCops: enable
   DisplayCopNames: true
   DisplayStyleGuide: true
-  TargetRubyVersion: 3.0
+  TargetRubyVersion: 2.6
   Exclude:
     - 'bin/*'
     - 'node_modules/**/*'

Gemfile

@@ -7,7 +7,7 @@ gemspec
 
 gem "rake", "~> 13.0"
 gem "rspec", "~> 3.0"
-gem "rubocop", "~> 1.21"
-gem "rubocop-performance"
-gem "rubocop-rspec"
+gem "rubocop", "< 1.51" # TODO: this version dropped support for Ruby 2.6
+gem "rubocop-performance", "< 1.18.0" # TODO: this version dropped support for Ruby 2.6
+gem "rubocop-rspec", "< 2.21.0" # TODO: this version dropped support for Ruby 2.6
 gem "simplecov", require: false

Gemfile.lock

@@ -10,7 +10,6 @@ GEM
     diff-lcs (1.5.0)
     docile (1.4.0)
     json (2.6.3)
-    language_server-protocol (3.17.0.3)
     parallel (1.23.0)
     parser (3.2.2.3)
       ast (~> 2.4.1)
@@ -33,30 +32,26 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.12.0)
     rspec-support (3.12.1)
-    rubocop (1.55.1)
+    rubocop (1.50.2)
       json (~> 2.3)
-      language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)
-      parser (>= 3.2.2.3)
+      parser (>= 3.2.0.0)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 1.8, < 3.0)
       rexml (>= 3.2.5, < 4.0)
-      rubocop-ast (>= 1.28.1, < 2.0)
+      rubocop-ast (>= 1.28.0, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 2.4.0, < 3.0)
     rubocop-ast (1.29.0)
       parser (>= 3.2.1.0)
     rubocop-capybara (2.18.0)
       rubocop (~> 1.41)
-    rubocop-factory_bot (2.23.1)
-      rubocop (~> 1.33)
-    rubocop-performance (1.18.0)
+    rubocop-performance (1.17.1)
       rubocop (>= 1.7.0, < 2.0)
       rubocop-ast (>= 0.4.0)
-    rubocop-rspec (2.23.0)
+    rubocop-rspec (2.20.0)
       rubocop (~> 1.33)
       rubocop-capybara (~> 2.17)
-      rubocop-factory_bot (~> 2.22)
     ruby-progressbar (1.13.0)
     simplecov (0.22.0)
       docile (~> 1.1)
@@ -76,9 +71,9 @@ DEPENDENCIES
   package_json!
   rake (~> 13.0)
   rspec (~> 3.0)
-  rubocop (~> 1.21)
-  rubocop-performance
-  rubocop-rspec
+  rubocop (< 1.51)
+  rubocop-performance (< 1.18.0)
+  rubocop-rspec (< 2.21.0)
   simplecov
 
 BUNDLED WITH

package_json.gemspec

@@ -12,7 +12,7 @@ Gem::Specification.new do |spec|
   spec.description = "It does stuff"
   spec.homepage = "https://github.com/G-Rath/package_json"
   spec.license = "MIT"
-  spec.required_ruby_version = ">= 3.0.0"
+  spec.required_ruby_version = ">= 2.6.0"
 
   spec.metadata["allowed_push_host"] = "TODO: Set to your gem server 'https://example.com'"