Add the Shale::Type::Decimal type to the tapioca compiler

Gemfile.lock

@@ -12,6 +12,7 @@ GEM
     ast (2.4.2)
     backport (1.2.0)
     benchmark (0.2.1)
+    bigdecimal (3.2.3)
     booleans (0.1.1)
     byebug (11.1.3)
     diff-lcs (1.5.0)
@@ -58,7 +59,8 @@ GEM
     rubocop-espago (1.0.2)
       rubocop
     ruby-progressbar (1.11.0)
-    shale (0.9.0)
+    shale (1.2.2)
+      bigdecimal
     shoulda-context (2.0.0)
     solargraph (0.48.0)
       backport (~> 1.2)

lib/tapioca/dsl/compilers/shale.rb

@@ -3,6 +3,7 @@
 
 require 'shale'
 require 'booleans'
+require 'bigdecimal'
 begin
   require 'shale/builder'
 rescue LoadError
@@ -148,7 +149,9 @@ def shale_builder_defined? = Boolean(defined?(::Shale::Builder))
           ::Shale::Type::Time     => Time,
           ::Shale::Type::Date     => Date,
           ::Shale::Type::Boolean  => T::Boolean,
-        }.freeze,
+        }.tap do |h|
+          h[::Shale::Type::Decimal] = BigDecimal if defined?(::Shale::Type::Decimal)
+        end.freeze,
         T::Hash[Class, Object],
       )
 
@@ -162,7 +165,11 @@ def shale_builder_defined? = Boolean(defined?(::Shale::Builder))
           ::Shale::Type::Time     => Time,
           ::Shale::Type::Date     => Date,
           ::Shale::Type::Boolean  => Object,
-        }.freeze,
+        }.tap do |h|
+          if defined?(::Shale::Type::Decimal)
+            h[::Shale::Type::Decimal] = T.any(BigDecimal, String, Float, Integer, NilClass)
+          end
+        end.freeze,
         T::Hash[Class, Object],
       )