From a0fb4e75a7060a8fa8ef12c64424b0f176c6d1a1 Mon Sep 17 00:00:00 2001
From: Rick Winfrey <rewinfrey@github.com>
Date: Wed, 30 Nov 2016 15:56:57 -0600
Subject: [PATCH] Add Yield term constructor support for JavaScript

---
 src/Language/JavaScript.hs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/Language/JavaScript.hs b/src/Language/JavaScript.hs
index cc9943f30..00ffc0a5e 100644
--- a/src/Language/JavaScript.hs
+++ b/src/Language/JavaScript.hs
@@ -103,6 +103,8 @@ termConstructor source sourceSpan name range children
       _ -> S.Export (Just statements) []
     ("export_statement", _ ) -> S.Error children
     ("break_statement", [ expr ] ) -> S.Break expr
+    ("yield_statement", [ expr ] ) -> S.Yield (Just expr)
+    ("yield_statement", [ ] ) -> S.Yield Nothing
     _ | name `elem` forStatements -> case unsnoc children of
           Just (exprs, body) -> S.For exprs [body]
           _ -> S.Error children
@@ -196,4 +198,5 @@ categoryForJavaScriptProductionName name = case name of
   "export_statement" -> Export
   "break_statement" -> Break
   "continue_statement" -> Continue
+  "yield_statement" -> Yield
   _ -> Other name