From 4a34294908bed6701dcba2456ca7ac5eafe0ddff Mon Sep 17 00:00:00 2001
From: Wesley Wigham <wewigham@microsoft.com>
Date: Wed, 19 Feb 2020 17:21:51 -0800
Subject: [PATCH] Unify padding impls and consistently use them

---
 src/compiler/core.ts                         | 15 +++++++++++++++
 src/compiler/program.ts                      |  7 -------
 src/executeCommandLine/executeCommandLine.ts | 15 ---------------
 src/harness/fourslashImpl.ts                 |  2 +-
 4 files changed, 16 insertions(+), 23 deletions(-)

diff --git a/src/compiler/core.ts b/src/compiler/core.ts
index 4f9b7bc5798..1e8326621d1 100644
--- a/src/compiler/core.ts
+++ b/src/compiler/core.ts
@@ -2051,4 +2051,19 @@ namespace ts {
             }
         }
     }
+
+    export function padLeft(s: string, length: number) {
+        while (s.length < length) {
+            s = " " + s;
+        }
+        return s;
+    }
+
+    export function padRight(s: string, length: number) {
+        while (s.length < length) {
+            s = s + " ";
+        }
+
+        return s;
+    }
 }
diff --git a/src/compiler/program.ts b/src/compiler/program.ts
index c77fa837118..1fdf668f521 100644
--- a/src/compiler/program.ts
+++ b/src/compiler/program.ts
@@ -383,13 +383,6 @@ namespace ts {
         return formatStyle + text + resetEscapeSequence;
     }
 
-    function padLeft(s: string, length: number) {
-        while (s.length < length) {
-            s = " " + s;
-        }
-        return s;
-    }
-
     function formatCodeSpan(file: SourceFile, start: number, length: number, indent: string, squiggleColor: ForegroundColorEscapeSequences, host: FormatDiagnosticsHost) {
         const { line: firstLine, character: firstLineChar } = getLineAndCharacterOfPosition(file, start);
         const { line: lastLine, character: lastLineChar } = getLineAndCharacterOfPosition(file, start + length);
diff --git a/src/executeCommandLine/executeCommandLine.ts b/src/executeCommandLine/executeCommandLine.ts
index 65240fbee46..6ce8e90a1df 100644
--- a/src/executeCommandLine/executeCommandLine.ts
+++ b/src/executeCommandLine/executeCommandLine.ts
@@ -33,21 +33,6 @@ namespace ts {
         return options.pretty;
     }
 
-    function padLeft(s: string, length: number) {
-        while (s.length < length) {
-            s = " " + s;
-        }
-        return s;
-    }
-
-    function padRight(s: string, length: number) {
-        while (s.length < length) {
-            s = s + " ";
-        }
-
-        return s;
-    }
-
     function getOptionsForHelp(commandLine: ParsedCommandLine) {
         // Sort our options by their names, (e.g. "--noImplicitAny" comes before "--watch")
         return !!commandLine.options.all ?
diff --git a/src/harness/fourslashImpl.ts b/src/harness/fourslashImpl.ts
index 3be657d4cd0..4beb2161c26 100644
--- a/src/harness/fourslashImpl.ts
+++ b/src/harness/fourslashImpl.ts
@@ -1563,7 +1563,7 @@ namespace FourSlash {
             const output: string[] = [];
             for (let lineNumber = contextStart.line; lineNumber <= contextEnd.line; lineNumber++) {
                 const spanLine = contextString.substring(contextLineMap[lineNumber], contextLineMap[lineNumber + 1]);
-                output.push(lineNumbers ? `${`${lineNumber + 1}: `.padStart(lineNumberPrefixLength, " ")}${spanLine}` : spanLine);
+                output.push(lineNumbers ? `${ts.padLeft(`${lineNumber + 1}: `, lineNumberPrefixLength)}${spanLine}` : spanLine);
                 if (selection) {
                     if (lineNumber < selectionStart.line || lineNumber > selectionEnd.line) {
                         continue;