From ba66dc49f592446dd3e09484397e900101b846ec Mon Sep 17 00:00:00 2001
From: 007lva <lvargas@rankia.com>
Date: Sun, 3 May 2020 02:16:16 +0200
Subject: [PATCH 1/3] Replace Fixnum and Bignum with Integer

---
 lib/sprockets/digest_utils.rb    | 12 +-----------
 lib/sprockets/loader.rb          |  2 +-
 lib/sprockets/processor_utils.rb |  5 +++--
 3 files changed, 5 insertions(+), 14 deletions(-)

diff --git a/lib/sprockets/digest_utils.rb b/lib/sprockets/digest_utils.rb
index 7053d48a0..b66703a7a 100644
--- a/lib/sprockets/digest_utils.rb
+++ b/lib/sprockets/digest_utils.rb
@@ -68,18 +68,8 @@ def detect_digest_class(bytes)
       Encoding => ->(val, digest) {
         digest << 'Encoding'.freeze
         digest << val.name
-      },
-    }
-    if 0.class != Integer # Ruby < 2.4
-      ADD_VALUE_TO_DIGEST[Fixnum] = ->(val, digest) {
-        digest << 'Integer'.freeze
-        digest << val.to_s
       }
-      ADD_VALUE_TO_DIGEST[Bignum] = ->(val, digest) {
-        digest << 'Integer'.freeze
-        digest << val.to_s
-      }
-    end
+    }
 
     ADD_VALUE_TO_DIGEST.compare_by_identity.rehash
 
diff --git a/lib/sprockets/loader.rb b/lib/sprockets/loader.rb
index 08e4866da..e8c044e60 100644
--- a/lib/sprockets/loader.rb
+++ b/lib/sprockets/loader.rb
@@ -289,7 +289,7 @@ def resolve_dependencies(uris)
       # Internal: Retrieves an asset based on its digest
       #
       # unloaded - An UnloadedAsset
-      # limit    - A Fixnum which sets the maximum number of versions of "histories"
+      # limit    - A Integer which sets the maximum number of versions of "histories"
       #            stored in the cache
       #
       # This method attempts to retrieve the last `limit` number of histories of an asset
diff --git a/lib/sprockets/processor_utils.rb b/lib/sprockets/processor_utils.rb
index 9d2943c38..d019667e4 100644
--- a/lib/sprockets/processor_utils.rb
+++ b/lib/sprockets/processor_utils.rb
@@ -118,8 +118,9 @@ def processors_cache_keys(processors)
       Symbol,
       TrueClass,
       FalseClass,
-      NilClass
-    ] + (0.class == Integer ? [Integer] : [Bignum, Fixnum])).freeze
+      NilClass,
+      Integer
+    ]).freeze
 
     # Internal: Set of all nested compound metadata types that can nest values.
     VALID_METADATA_COMPOUND_TYPES = Set.new([

From aabdf606933425cc36701cb8b7a16a94e7f43304 Mon Sep 17 00:00:00 2001
From: 007lva <lvargas@rankia.com>
Date: Sun, 3 May 2020 02:27:06 +0200
Subject: [PATCH 2/3] Update Changelog

---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3ef859ab9..99619f68f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@ Get upgrade notes from Sprockets 3.x to 4.x at https://github.com/rails/sprocket
 ## Master
 
 - Fix for Ruby 2.7 keyword arguments warning in `base.rb`. [#660](https://github.com/rails/sprockets/pull/660)
+- Remove remaining support for Ruby < 2.4.[#672](https://github.com/rails/sprockets/pull/672)
 
 ## 4.0.0
 

From a03af72f46a7b13bf0fac188142d20c372573b41 Mon Sep 17 00:00:00 2001
From: 007lva <lvargas@rankia.com>
Date: Sun, 14 Jun 2020 22:32:26 +0200
Subject: [PATCH 3/3] Fix typo

---
 lib/sprockets/loader.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/sprockets/loader.rb b/lib/sprockets/loader.rb
index d7ba54e95..60284f8e7 100644
--- a/lib/sprockets/loader.rb
+++ b/lib/sprockets/loader.rb
@@ -291,7 +291,7 @@ def resolve_dependencies(uris)
       # Internal: Retrieves an asset based on its digest
       #
       # unloaded - An UnloadedAsset
-      # limit    - A Integer which sets the maximum number of versions of "histories"
+      # limit    - An Integer which sets the maximum number of versions of "histories"
       #            stored in the cache
       #
       # This method attempts to retrieve the last `limit` number of histories of an asset