compile TypeScript source code in ES5 mode

Author: gfx

lib/typescript-rails.rb

@@ -1,6 +1,4 @@
-require "typescript-node"
-
-require "typescript/rails/railtie"
-require "typescript/rails/engine"
-require "typescript/rails/template_handler"
-require "typescript/rails/version"
+require 'typescript/rails/railtie'
+require 'typescript/rails/engine'
+require 'typescript/rails/template_handler'
+require 'typescript/rails/version'

lib/typescript/rails/template_handler.rb

@@ -1,3 +1,4 @@
+require 'typescript-node'
 require 'tilt'
 
 module Typescript
@@ -16,12 +17,12 @@ def self.default_bare=(value)
         @@default_bare = value
       end
 
-      # DEPRECATED
+      # @deprecated
       def self.default_no_wrap
         @@default_bare
       end
 
-      # DEPRECATED
+      # @deprecated
       def self.default_no_wrap=(value)
         @@default_bare = value
       end
@@ -42,7 +43,8 @@ def prepare
 
       def evaluate(scope, locals, &block)
         source = Typescript::Rails.replace_relative_references(file, data)
-        @output ||= TypeScript::Node.compile(source)
+        # TODO: employs source-maps
+        @output ||= TypeScript::Node.compile(source, '--target', 'ES5')
       end
 
       def allows_script?
@@ -63,7 +65,8 @@ def self.call(template)
         TypeScript::Node.compile(
           Typescript::Rails.replace_relative_references(
             '#{escaped_path}', (begin;#{compiled_source};end)
-          )
+          ),
+          '--target', 'ES5'
         )
         EOS
       end

lib/typescript/rails/version.rb

@@ -1,5 +1,5 @@
 module Typescript
   module Rails
-    VERSION = "0.2.0"
+    VERSION = '0.3.0'
   end
 end

test/support/site/es5.js.ts

@@ -0,0 +1,7 @@
+class Person {
+    private _name = "Alice";
+
+    public get name(): string {
+        return this._name
+    }
+}

test/template_handler_test.rb

@@ -8,12 +8,13 @@ class SiteController < ActionController::Base
 
 DummyApp = ActionDispatch::Routing::RouteSet.new
 DummyApp.draw do
-  get "site/index"
-  get "site/ref1_1"
-  get "site/ref1_2"
-  get "site/ref2_1"
-  get "site/ref2_2"
-  get "site/ref3_1"
+  get 'site/index'
+  get 'site/ref1_1'
+  get 'site/ref1_2'
+  get 'site/ref2_1'
+  get 'site/ref2_2'
+  get 'site/ref3_1'
+  get 'site/es5'
 end
 
 class TemplateHandlerTest < ActiveSupport::TestCase
@@ -52,4 +53,8 @@ def source
         source
   end
 
+  test 'ES5 features' do
+    get '/site/es5.js'
+    assert_equal 200, last_response.status
+  end
 end

typescript-rails.gemspec

@@ -14,7 +14,7 @@ Gem::Specification.new do |gem|
   gem.summary       = %q{Adds Typescript to the Rails Asset pipeline}
   gem.homepage      = "https://github.com/typescript-ruby/typescript-rails"
 
-  gem.add_runtime_dependency 'typescript-node'
+  gem.add_runtime_dependency 'typescript-node', '>= 1.1.0'
   gem.add_runtime_dependency 'tilt'
   gem.add_runtime_dependency 'railties'