Create js_library and js_binary templates for closure compiling.

third_party/closure_compiler/js_library.py

Index: third_party/closure_compiler/js_library.py
diff --git a/third_party/closure_compiler/js_library.py b/third_party/closure_compiler/js_library.py
new file mode 100644
index 0000000000000000000000000000000000000000..8a24d900b582cbcd1736804ee03fad728110b2f7
--- /dev/null
+++ b/third_party/closure_compiler/js_library.py
@@ -0,0 +1,32 @@
+# Copyright 2017 The Chromium Authors.  All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+"""Generates a file describing the js_library to be used by js_binary action.
+
+This script takes in a list of sources and dependencies as described by a
+js_library action.  It creates a file listing the sources and dependencies
+that can later be used by a js_binary action to compile the javascript.
+"""
+
+from argparse import ArgumentParser
+import sys
+
+def main():
+  parser = ArgumentParser()
+  parser.add_argument('-s', '--sources', nargs='*', default = [],
+                      help='List of js source files')
+  parser.add_argument('-o', '--output', help='Write list to output')
+  parser.add_argument('-d', '--deps', nargs='*', default = [],
+                      help='List of js_library dependencies')
+  args = parser.parse_args()
+
+  with open(args.output, 'w') as out:
+    out.write('sources:\n')

[Dan Beam, 2017/04/18 02:05:50]

could this be:

out.write('sources:\n%s\ndeps:%s' % ('\n'.join(sources), '\n'.join(deps)))

[damargulis, 2017/04/19 00:42:13]

Done.

+    for s in args.sources:
+      out.write(s + '\n')
+    out.write('deps:\n')
+    for d in args.deps:
+      out.write(d + '\n')
+
+if __name__ == '__main__':
+  sys.exit(main())

[Dan Beam, 2017/04/18 02:05:50]

i don't see a reason to do this sys.exit() nor to import sys after you've
removed it

[damargulis, 2017/04/19 00:42:13]

Done.