Correct super() Code Fix Formatting on Single-Line Constructor

src/services/codefixes/fixConstructorForDerivedNeedSuperCall.ts

@@ -10,9 +10,22 @@ namespace ts.codefix {
                 return undefined;
             }
 
+            const body = (<ConstructorDeclaration>token.parent).body;
+
+            if (!body) {
+                return undefined;
+            }
+
+            const superCall = startOnNewLine(createStatement(createCall(createSuper(), /*typeArguments*/ undefined, /*argumentsArray*/ emptyArray)));
+            const statements: Statement[] = [superCall];
+            addRange(statements, body.statements);
+
+            const fixedBody = getMutableClone(body);
+            fixedBody.multiLine = true;
+            fixedBody.statements = createNodeArray(statements);
+
             const changeTracker = textChanges.ChangeTracker.fromContext(context);
-            const superCall = createStatement(createCall(createSuper(), /*typeArguments*/ undefined, /*argumentsArray*/ emptyArray));
-            changeTracker.insertNodeAfter(sourceFile, getOpenBrace(<ConstructorDeclaration>token.parent, sourceFile), superCall, { suffix: context.newLineCharacter });
+            changeTracker.replaceNode(sourceFile, body, fixedBody);
 
             return [{
                 description: getLocaleSpecificMessage(Diagnostics.Add_missing_super_call),

tests/cases/fourslash/codeFixSuperCall.ts

@@ -3,10 +3,10 @@
 ////class Base{
 ////}
 ////class C extends Base{
-////    constructor() {[|
-////    |]}
+////    constructor() [|{
+////    }|]
 ////}
 // TODO: GH#18445
-verify.rangeAfterCodeFix(`
+verify.rangeAfterCodeFix(`{\r
         super();\r
-    `, /*includeWhitespace*/ true);
+    }`, /*includeWhitespace*/ true);

tests/cases/fourslash/codeFixSuperCallSingleLine.ts

@@ -0,0 +1,11 @@
+/// <reference path='fourslash.ts' />
+
+////class Base{
+////}
+////class C extends Base{
+////    constructor() [|{}|]
+////}
+// TODO: GH#18445
+verify.rangeAfterCodeFix(`{\r
+        super();\r
+    }`, /*includeWhitespace*/ true);

tests/cases/fourslash/codeFixSuperCallSingleLineWithBody.ts

@@ -0,0 +1,12 @@
+/// <reference path='fourslash.ts' />
+
+////class Base{
+////}
+////class C extends Base{
+////    constructor() [|{ const t = 0; }|]
+////}
+// TODO: GH#18445
+verify.rangeAfterCodeFix(`{\r
+        super();\r
+        const t = 0;\r
+    }`, /*includeWhitespace*/ true);