Index: src/js/symbol.js |
diff --git a/src/js/symbol.js b/src/js/symbol.js |
index a5d80a61801b6afe3b607b4db189299cdfe6e933..0c87a117ee43de5b3da0eac8e441a3846908f1d5 100644 |
--- a/src/js/symbol.js |
+++ b/src/js/symbol.js |
@@ -77,7 +77,7 @@ function SymbolKeyFor(symbol) { |
utils.InstallConstants(GlobalSymbol, [ |
// TODO(rossberg): expose when implemented. |
// "hasInstance", hasInstanceSymbol, |
- // "isConcatSpreadable", isConcatSpreadableSymbol, |
+ "isConcatSpreadable", isConcatSpreadableSymbol, |
"iterator", iteratorSymbol, |
// TODO(yangguo): expose when implemented. |
// "match", matchSymbol, |