From 55a66c5b5ed696b1973553418dcf5ecb64362387 Mon Sep 17 00:00:00 2001
From: Ryan Cavanaugh <RyanCavanaugh@users.noreply.github.com>
Date: Mon, 2 Jul 2018 10:56:55 -0700
Subject: [PATCH] .json also doesn't produce outputs

---
 src/compiler/tsbuild.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/compiler/tsbuild.ts b/src/compiler/tsbuild.ts
index d8eac339b4b..ae96bb5f0dd 100644
--- a/src/compiler/tsbuild.ts
+++ b/src/compiler/tsbuild.ts
@@ -294,9 +294,10 @@ namespace ts {
         return changeExtension(outputPath, (fileExtensionIs(inputFileName, Extension.Tsx) && configFile.options.jsx === JsxEmit.Preserve) ? Extension.Jsx : Extension.Js);
     }
 
+    const extensionsWithNoOutput: ReadonlyArray<string> = [Extension.Dts, Extension.Json];
     function getOutputFileNames(inputFileName: string, configFile: ParsedCommandLine): ReadonlyArray<string> {
         // outFile is handled elsewhere; .d.ts files don't generate outputs
-        if (configFile.options.outFile || fileExtensionIs(inputFileName, Extension.Dts)) {
+        if (configFile.options.outFile || fileExtensionIsOneOf(inputFileName, extensionsWithNoOutput)) {
             return emptyArray;
         }