TypeScript编译器API:如何在语句中添加/删除修饰符

import * as ts from 'typescript';

const sourceCode = `
class MyClass {
  myMethod() {
    console.log('Hello, World!');
  }
}
`;

const sourceFile = ts.createSourceFile('example.ts', sourceCode, ts.ScriptTarget.ESNext, true);

function visit(node: ts.Node) {
  if (ts.isMethodDeclaration(node) && node.name.getText() === 'myMethod') {
    // 在语句前添加修饰符
    const modifiers = [ts.createModifier(ts.SyntaxKind.PublicKeyword)];
    const updatedNode = ts.updateMethod(node, modifiers, node.asteriskToken, node.name, node.questionToken, node.typeParameters, node.parameters, node.type, node.body);
    return updatedNode;
  }

  return ts.visitEachChild(node, visit, context);
}

const updatedSourceFile = ts.visitNode(sourceFile, visit);

const printer = ts.createPrinter();
const updatedCode = printer.printFile(updatedSourceFile);
console.log(updatedCode);