From 6953fa17328809c0b4db08e9a91adb2196957496 Mon Sep 17 00:00:00 2001
From: Daniel Rosenwasser <Daniel.Rosenwasser@microsoft.com>
Date: Tue, 17 Apr 2018 17:06:50 -0700
Subject: [PATCH] flags--;

---
 src/compiler/commandLineParser.ts | 8 --------
 src/compiler/tsc.ts               | 4 ++--
 src/compiler/types.ts             | 8 --------
 3 files changed, 2 insertions(+), 18 deletions(-)

diff --git a/src/compiler/commandLineParser.ts b/src/compiler/commandLineParser.ts
index 2de922b4159..470bd111492 100644
--- a/src/compiler/commandLineParser.ts
+++ b/src/compiler/commandLineParser.ts
@@ -56,14 +56,6 @@ namespace ts {
             category: Diagnostics.Command_line_Options,
             description: Diagnostics.Stylize_errors_and_messages_using_color_and_context_experimental
         },
-        {
-            name: "diagnosticStyle",
-            type: createMapFromTemplate({
-                auto: DiagnosticStyle.Auto,
-                pretty: DiagnosticStyle.Pretty,
-                simple: DiagnosticStyle.Simple,
-            }),
-        },
         {
             name: "preserveWatchOutput",
             type: "boolean",
diff --git a/src/compiler/tsc.ts b/src/compiler/tsc.ts
index 56c3c323f30..b2bffd83ca7 100644
--- a/src/compiler/tsc.ts
+++ b/src/compiler/tsc.ts
@@ -25,10 +25,10 @@ namespace ts {
     }
 
     function shouldBePretty(options: CompilerOptions) {
-        if ((typeof options.pretty === "undefined" && typeof options.diagnosticStyle === "undefined") || options.diagnosticStyle === DiagnosticStyle.Auto) {
+        if ((typeof options.pretty === "undefined")) {
             return !!sys.writeOutputIsTty && sys.writeOutputIsTty();
         }
-        return options.diagnosticStyle === DiagnosticStyle.Pretty || options.pretty;
+        return options.pretty;
     }
 
     function padLeft(s: string, length: number) {
diff --git a/src/compiler/types.ts b/src/compiler/types.ts
index 802c175b573..8962a7d0280 100644
--- a/src/compiler/types.ts
+++ b/src/compiler/types.ts
@@ -4194,7 +4194,6 @@ namespace ts {
         /* @internal */ preserveWatchOutput?: boolean;
         project?: string;
         /* @internal */ pretty?: boolean;
-        /* @internal */ diagnosticStyle?: DiagnosticStyle;
         reactNamespace?: string;
         jsxFactory?: string;
         removeComments?: boolean;
@@ -4292,13 +4291,6 @@ namespace ts {
         JSX,
     }
 
-    /* @internal */
-    export const enum DiagnosticStyle {
-        Auto,
-        Pretty,
-        Simple,
-    }
-
     /** Either a parsed command line or a parsed tsconfig.json */
     export interface ParsedCommandLine {
         options: CompilerOptions;