From 0d7d75ec64b0b129c892d4062fdbc14a790a292a Mon Sep 17 00:00:00 2001
From: Wesley Wigham <wwigham@gmail.com>
Date: Thu, 3 May 2018 14:57:01 -0700
Subject: [PATCH] Add formatting rule for import type import keyword and open
 paren (#23872)

---
 src/services/formatting/rules.ts              | 6 ++++++
 tests/cases/fourslash/importTypeFormatting.ts | 9 +++++++++
 2 files changed, 15 insertions(+)
 create mode 100644 tests/cases/fourslash/importTypeFormatting.ts

diff --git a/src/services/formatting/rules.ts b/src/services/formatting/rules.ts
index a658cc41c65..901dbf761f3 100644
--- a/src/services/formatting/rules.ts
+++ b/src/services/formatting/rules.ts
@@ -59,6 +59,8 @@ namespace ts.formatting {
             rule("NoSpaceBeforeDot", anyToken, SyntaxKind.DotToken, [isNonJsxSameLineTokenContext], RuleAction.Delete),
             rule("NoSpaceAfterDot", SyntaxKind.DotToken, anyToken, [isNonJsxSameLineTokenContext], RuleAction.Delete),
 
+            rule("NoSpaceBetweenImportParenInImportType", SyntaxKind.ImportKeyword, SyntaxKind.OpenParenToken, [isNonJsxSameLineTokenContext, isImportTypeContext], RuleAction.Delete),
+
             // Special handling of unary operators.
             // Prefix operators generally shouldn't have a space between
             // them and their target unary expression.
@@ -641,6 +643,10 @@ namespace ts.formatting {
         return context.contextNode.kind === SyntaxKind.ArrowFunction;
     }
 
+    function isImportTypeContext(context: FormattingContext): boolean {
+        return context.contextNode.kind === SyntaxKind.ImportType;
+    }
+
     function isNonJsxSameLineTokenContext(context: FormattingContext): boolean {
         return context.TokensAreOnSameLine() && context.contextNode.kind !== SyntaxKind.JsxText;
     }
diff --git a/tests/cases/fourslash/importTypeFormatting.ts b/tests/cases/fourslash/importTypeFormatting.ts
new file mode 100644
index 00000000000..2b7983d893c
--- /dev/null
+++ b/tests/cases/fourslash/importTypeFormatting.ts
@@ -0,0 +1,9 @@
+/// <reference path="fourslash.ts"/>
+
+////var y: import("./c2").mytype;
+////var z: import ("./c2").mytype;
+
+format.document();
+verify.currentFileContentIs(
+`var y: import("./c2").mytype;
+var z: import("./c2").mytype;`);