From 5fff71742b019be600b5bfe4c60e03afc73fe594 Mon Sep 17 00:00:00 2001
From: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
Date: Fri, 10 Nov 2017 10:11:44 -0800
Subject: [PATCH] Use ts.stringContains instead of String.indexOf

---
 src/harness/externalCompileRunner.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/harness/externalCompileRunner.ts b/src/harness/externalCompileRunner.ts
index 5730c5c3c83..33803752f94 100644
--- a/src/harness/externalCompileRunner.ts
+++ b/src/harness/externalCompileRunner.ts
@@ -110,7 +110,7 @@ function isUnexpectedError(cwd: string) {
         ts.Debug.assertGreaterThanOrEqual(lineNumber, 0);
         ts.Debug.assertLessThan(lineNumber, lines.length);
         const previousLine = lineNumber - 1 > 0 ? lines[lineNumber - 1] : "";
-        return lines[lineNumber].indexOf("$ExpectError") === -1 && previousLine.indexOf("$ExpectError") === -1;
+        return !ts.stringContains(lines[lineNumber], "$ExpectError") && !ts.stringContains(previousLine, "$ExpectError");
     };
 }
 /**