Refactor and inline getNodeToInsertMethodAfter

Author: vpukhanov

src/services/codefixes/fixAddMissingMember.ts

@@ -199,34 +199,13 @@ namespace ts.codefix {
         preferences: UserPreferences,
     ): void {
         const methodDeclaration = createMethodFromCallExpression(callExpression, token.text, inJs, makeStatic, preferences);
-        const currentMethod = getNodeToInsertMethodAfter(classDeclaration, callExpression);
+        const containingMethodDeclaration = getAncestor(callExpression, SyntaxKind.MethodDeclaration);
 
-        if (currentMethod) {
-            changeTracker.insertNodeAfter(classDeclarationSourceFile, currentMethod, methodDeclaration);
+        if (containingMethodDeclaration && containingMethodDeclaration.parent === classDeclaration) {
+            changeTracker.insertNodeAfter(classDeclarationSourceFile, containingMethodDeclaration, methodDeclaration);
         }
         else {
             changeTracker.insertNodeAtClassStart(classDeclarationSourceFile, classDeclaration, methodDeclaration);
         }
     }
-
-    // Gets the MethodDeclaration of a method of the cls class that contains the node, or undefined if the node is not in a method or that method is not in the cls class.
-    function getNodeToInsertMethodAfter(cls: ClassLikeDeclaration, node: Node): MethodDeclaration | undefined {
-        const nodeMethod = getParentMethodDeclaration(node);
-        if (nodeMethod) {
-            const isClsMethod = contains(cls.members, nodeMethod);
-            if (isClsMethod) {
-                return nodeMethod;
-            }
-        }
-        return undefined;
-    }
-
-    // Gets the MethodDeclaration of the method that contains the node, or undefined if the node is not in a method.
-    function getParentMethodDeclaration(node: Node): MethodDeclaration | undefined {
-        while (node) {
-            if (isMethodDeclaration(node)) break;
-            node = node.parent;
-        }
-        return node;
-    }
 }