如何使用TypeScript编译器API向TypeScript类添加新属性？

import * as ts from 'typescript';

const sourceCode = `
  class MyClass {
    // Existing class properties and methods
  }
`;
const sourceFile = ts.createSourceFile('temp.ts', sourceCode, ts.ScriptTarget.ESNext, true);

let classNode: ts.ClassDeclaration | undefined;
ts.forEachChild(sourceFile, (node) => {
  if (ts.isClassDeclaration(node) && node.name?.getText() === 'MyClass') {
    classNode = node;
  }
});

const newProperty = ts.createProperty(
  undefined, // Modifiers (e.g., public, private)
  [ts.createToken(ts.SyntaxKind.ReadonlyKeyword)], // Property modifiers (e.g., readonly)
  'newProperty', // Property name
  undefined, // Question token (e.g., ? for optional property)
  ts.createKeywordTypeNode(ts.SyntaxKind.StringKeyword), // Property type
  undefined // Initializer value
);

if (classNode) {
  const updatedMembers = ts.createNodeArray([...classNode.members, newProperty]);
  classNode = ts.updateClassDeclaration(
    classNode,
    classNode.decorators,
    classNode.modifiers,
    classNode.name,
    classNode.typeParameters,
    classNode.heritageClauses,
    updatedMembers
  );
}

const printer = ts.createPrinter();
const updatedCode = printer.printFile(sourceFile);