shards_with_type_annotations.diff

diff --git a/src/commands/command.cr b/src/commands/command.cr
index ebda4f1..70f5360 100644
--- a/src/commands/command.cr
+++ b/src/commands/command.cr
@@ -4,9 +4,12 @@ require "../spec"
 
 module Shards
   abstract class Command
-    getter :path
-    getter :spec_path
-    getter :lockfile_path
+    getter :path : String
+    getter :spec_path : String
+    getter :lockfile_path : String
+    @spec : Spec?
+    @manager : Manager?
+    @locks : Lock?
 
     def initialize(path)
       if File.directory?(path)
diff --git a/src/dependency.cr b/src/dependency.cr
index 055f07b..3c89935 100644
--- a/src/dependency.cr
+++ b/src/dependency.cr
@@ -2,7 +2,7 @@ module Shards
   class Dependency < Hash(String, String)
     property :name
 
-    def initialize(@name)
+    def initialize(@name : String)
       super()
     end
 
diff --git a/src/errors.cr b/src/errors.cr
index 60cfe01..601f7f6 100644
--- a/src/errors.cr
+++ b/src/errors.cr
@@ -5,7 +5,7 @@ module Shards
   class Conflict < Error
     getter :package
 
-    def initialize(@package)
+    def initialize(@package : Package)
       super "Error resolving #{package.name} (#{package.requirements.join(", ")})"
     end
   end
@@ -25,10 +25,10 @@ module Shards
   class ParseError < Error
     getter :input
     getter :filename
-    getter :line_number
-    getter :column_number
+    getter :line_number : Int32
+    getter :column_number : Int32
 
-    def initialize(message, @input, @filename, line_number, column_number)
+    def initialize(message : String, @input : String, @filename : Int32, line_number, column_number)
       @line_number = line_number.to_i
       @column_number = column_number.to_i
       super message
diff --git a/src/logger.cr b/src/logger.cr
index 3fecad0..b46f568 100644
--- a/src/logger.cr
+++ b/src/logger.cr
@@ -23,6 +23,10 @@ class Logger(T)
     io << severity.rjust(5) << " -- " << progname << ": " << message
   end
 
+  @level : Severity
+  @formatter : Formatter
+  @progname : String
+
   def initialize(@io : T)
     @level = Severity::INFO
     @formatter = DEFAULT_FORMATTER
diff --git a/src/manager.cr b/src/manager.cr
index 39c8251..7559c62 100644
--- a/src/manager.cr
+++ b/src/manager.cr
@@ -4,7 +4,9 @@ module Shards
   class Manager
     getter :spec, :packages, :locks
 
-    def initialize(@spec, update_cache = true)
+    @packages : Set
+
+    def initialize(@spec : Spec, update_cache = true)
       @packages = Set.new(update_cache: update_cache)
     end
 
diff --git a/src/package.cr b/src/package.cr
index 97d684f..5cd413f 100644
--- a/src/package.cr
+++ b/src/package.cr
@@ -5,9 +5,12 @@ module Shards
   class Package
     include Helpers::Versions
 
-    getter :requirements
+    getter :requirements : Array(String)
 
-    def initialize(@dependency, @update_cache = false)
+    @resolver : Resolver?
+    @available_versions : Array(String)?
+
+    def initialize(@dependency : dependency, @update_cache = false : Bool)
       @requirements = [] of String
     end
 
diff --git a/src/resolvers/git.cr b/src/resolvers/git.cr
index 558d551..538b128 100644
--- a/src/resolvers/git.cr
+++ b/src/resolvers/git.cr
@@ -14,6 +14,8 @@ module Shards
     # :nodoc:
     GIT_COLUMN_NEVER = Helpers::NaturalSort.sort(GIT_VERSION, "1.7.11") < 0 ? "--column=never" : ""
 
+    @updated_cache = false
+
     def self.key
       "git"
     end
diff --git a/src/resolvers/resolver.cr b/src/resolvers/resolver.cr
index c28aa71..0c969a5 100644
--- a/src/resolvers/resolver.cr
+++ b/src/resolvers/resolver.cr
@@ -10,7 +10,7 @@ module Shards
 
     getter :dependency
 
-    def initialize(@dependency, @update_cache = true)
+    def initialize(@dependency : Dependency, @update_cache = true : Bool)
     end
 
     def spec(version = nil)
diff --git a/src/spec.cr b/src/spec.cr
index 6b05586..61b5fe1 100644
--- a/src/spec.cr
+++ b/src/spec.cr
@@ -7,8 +7,8 @@ require "./errors"
 module Shards
   class Spec
     class Author
-      property :name
-      property :email
+      property :name : String
+      property :email : String
 
       def self.new(pull : YAML::PullParser)
         new(pull.read_scalar)
@@ -42,10 +42,15 @@ module Shards
       parser.close if parser
     end
 
-    getter! :name
-    getter! :version
-    getter :description
-    getter :license
+    getter! :name : String
+    getter! :version : String
+    getter :description : String
+    getter :license : String
+
+    @authors : Array(Author)?
+    @dependencies : Array(Dependency)?
+    @development_dependencies : Array(Dependency)?
+    @scripts : Hash(String, String)?
 
     # :nodoc:
     def initialize(pull : YAML::PullParser, validate = false)