Fixes to emit / format for codeFix (#18486)

src/compiler/emitter.ts

@@ -2417,6 +2417,12 @@ namespace ts {
 
             const isEmpty = isUndefined || children.length === 0 || start >= children.length || count === 0;
             if (isEmpty && format & ListFormat.OptionalIfEmpty) {
+                if (onBeforeEmitNodeArray) {
+                    onBeforeEmitNodeArray(children);
+                }
+                if (onAfterEmitNodeArray) {
+                    onAfterEmitNodeArray(children);
+                }
                 return;
             }
 

src/services/formatting/rules.ts

@@ -757,9 +757,8 @@ namespace ts.formatting {
                     return true;
                 case SyntaxKind.Block: {
                     const blockParent = context.currentTokenParent.parent;
-                    if (blockParent.kind !== SyntaxKind.ArrowFunction &&
-                        blockParent.kind !== SyntaxKind.FunctionExpression
-                    ) {
+                    // In a codefix scenario, we can't rely on parents being set. So just always return true.
+                    if (!blockParent || blockParent.kind !== SyntaxKind.ArrowFunction && blockParent.kind !== SyntaxKind.FunctionExpression) {
                         return true;
                     }
                 }