Replace .to_h { block } with .each.with_object({}) { block }

Author: ntkme

lib/sass/compiler/host/protofier.rb

@@ -39,7 +39,7 @@ def to_proto(obj)
               argument_list: EmbeddedProtocol::Value::ArgumentList.new(
                 id: obj.instance_eval { @id },
                 contents: obj.to_a.map { |element| to_proto(element) },
-                keywords: obj.keywords.to_h { |key, value| [key.to_s, to_proto(value)] },
+                keywords: obj.keywords.each.with_object({}) { |(key, value), hash| hash[key.to_s] = to_proto(value) },
                 separator: ListSeparator.to_proto(obj.separator)
               )
             )
@@ -126,8 +126,8 @@ def from_proto(proto)
               obj.contents.map do |element|
                 from_proto(element)
               end,
-              obj.keywords.entries.to_h do |key, value|
-                [key.to_sym, from_proto(value)]
+              obj.keywords.to_enum.with_object({}) do |(key, value), hash|
+                hash[key.to_sym] = from_proto(value)
               end,
               ListSeparator.from_proto(obj.separator)
             ).instance_eval do
@@ -144,8 +144,8 @@ def from_proto(proto)
             )
           when :map
             Sass::Value::Map.new(
-              obj.entries.to_h do |entry|
-                [from_proto(entry.key), from_proto(entry.value)]
+              obj.entries.to_enum.with_object({}) do |entry, hash|
+                hash[from_proto(entry.key)] = from_proto(entry.value)
               end
             )
           when :compiler_function

lib/sass/serializer.rb

@@ -5,17 +5,11 @@ module Sass
   module Serializer
     module_function
 
-    CSS_ESCAPE = {
-      "\0" => "\uFFFD",
-      '\\' => '\\\\',
-      '"' => '\\"',
-      "'" => "\\'",
-      **[*"\x01".."\x08", *"\x0A".."\x1F", "\x7F"].product(
-        [*'0'..'9', *'a'..'f', *'A'..'F', "\t", ' ', nil]
-      ).to_h do |c, x|
-        ["#{c}#{x}".freeze, "\\#{c.ord.to_s(16)}#{" #{x}" if x}".freeze]
-      end
-    }.freeze
+    CSS_ESCAPE = [*"\x01".."\x08", *"\x0A".."\x1F", "\x7F"]
+                 .product([*'0'..'9', *'a'..'f', *'A'..'F', "\t", ' ', nil])
+                 .each.with_object({ "\0" => "\uFFFD", '\\' => '\\\\', '"' => '\\"', "'" => "\\'" }) do |(c, x), h|
+                   h["#{c}#{x}".freeze] = "\\#{c.ord.to_s(16)}#{" #{x}" if x}".freeze
+                 end.freeze
 
     private_constant :CSS_ESCAPE
 

lib/sass/value/number/unit.rb

@@ -141,10 +141,11 @@ module Unit
           'pixel density': %w[dpi dpcm dppx]
         }.freeze
 
-        TYPES_BY_UNIT = UNITS_BY_TYPE.invert
-                                     .to_a
-                                     .flat_map { |pair| pair[0].map { |key| [key, pair[1]] } }
-                                     .to_h
+        TYPES_BY_UNIT = UNITS_BY_TYPE.each.with_object({}) do |(key, values), hash|
+          values.each do |value|
+            hash[value] = key
+          end
+        end
 
         module_function