From 27675fc96e6da8dbb7d7a328def8a07c1a73e37f Mon Sep 17 00:00:00 2001
From: Oleg Mihailik <mihailik@gmail.com>
Date: Sat, 25 Feb 2017 23:35:24 +0000
Subject: [PATCH] Avoid failing TS2695 for eval.

---
 src/compiler/checker.ts            | 2 +-
 tests/cases/compiler/evalAfter0.ts | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)
 create mode 100644 tests/cases/compiler/evalAfter0.ts

diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index ac5012a3bf..15782e1361 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -15929,7 +15929,7 @@ namespace ts {
                     checkAssignmentOperator(rightType);
                     return getRegularTypeOfObjectLiteral(rightType);
                 case SyntaxKind.CommaToken:
-                    if (!compilerOptions.allowUnreachableCode && isSideEffectFree(left)) {
+                    if (!compilerOptions.allowUnreachableCode && isSideEffectFree(left) && right.text!=="eval") {
                         error(left, Diagnostics.Left_side_of_comma_operator_is_unused_and_has_no_side_effects);
                     }
                     return rightType;
diff --git a/tests/cases/compiler/evalAfter0.ts b/tests/cases/compiler/evalAfter0.ts
new file mode 100644
index 0000000000..ff9a036fac
--- /dev/null
+++ b/tests/cases/compiler/evalAfter0.ts
@@ -0,0 +1,3 @@
+(0,eval)("10");
+
+(0,alert)("10");
\ No newline at end of file