From 2347d8a09fdb7cefea4913236b3bd74bc69a3583 Mon Sep 17 00:00:00 2001
From: Simone Gasbarroni <simone.gasbarroni@gmail.com>
Date: Thu, 17 Mar 2016 16:10:51 +0100
Subject: [PATCH] added webassets TypeScript filter

---
 README.rst                          | 13 +++++++++++++
 dukpy/webassets/__init__.py         |  1 +
 dukpy/webassets/typescriptfilter.py | 20 ++++++++++++++++++++
 setup.py                            |  2 +-
 4 files changed, 35 insertions(+), 1 deletion(-)
 create mode 100644 dukpy/webassets/typescriptfilter.py

diff --git a/README.rst b/README.rst
index 58ff60b..6c2f2c8 100644
--- a/README.rst
+++ b/README.rst
@@ -56,6 +56,19 @@ The TypeScript compiler can be used through the
 
 Currently the compiler has built-in options and doesn't accept additional ones,
 
+The DukPY based TypeScript compiler also provides a WebAssets (
+http://webassets.readthedocs.org/en/latest/ ) filter to automatically
+compile ES6 code in your assets pipeline.  You register this filter as
+``typescript`` within WebAssets using:
+
+.. code:: python
+
+    from webassets.filter import register_filter
+    from dukpy.webassets import TypeScript
+
+    register_filter(TypeScript)
+
+Which makes the filter available with the ``typescript`` name.
 
 EcmaScript6 BabelJS Transpiler
 ------------------------------
diff --git a/dukpy/webassets/__init__.py b/dukpy/webassets/__init__.py
index b286c51..459d47d 100644
--- a/dukpy/webassets/__init__.py
+++ b/dukpy/webassets/__init__.py
@@ -1 +1,2 @@
 from .babelfilter import BabelJS
+from .typescriptfilter import TypeScript
diff --git a/dukpy/webassets/typescriptfilter.py b/dukpy/webassets/typescriptfilter.py
new file mode 100644
index 0000000..f118d1e
--- /dev/null
+++ b/dukpy/webassets/typescriptfilter.py
@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+from __future__ import absolute_import, print_function
+from webassets.filter import Filter
+
+import dukpy
+
+
+__all__ = ('TypeScript', )
+
+
+class TypeScript(Filter):
+    name = 'typescript'
+    max_debug_level = None
+
+    def setup(self):
+        super(TypeScript, self).setup()
+
+    def input(self, _in, out, **kw):
+        src = dukpy.typescript_compile(_in.read())
+        out.write(src['code'])
diff --git a/setup.py b/setup.py
index 1e874e1..947f7a3 100644
--- a/setup.py
+++ b/setup.py
@@ -18,7 +18,7 @@ setup(
     version='0.0.1',
     description='Simple JavaScript interpreter for Python',
     long_description=README,
-    keywords='javascript compiler babeljs coffeescript',
+    keywords='javascript compiler babeljs coffeescript typescript',
     author='Alessandro Molina',
     author_email='alessandro.molina@axant.it',
     url='https://github.com/amol-/dukpy',