在片段占位符中看不到片段

import React, { Fragment } from 'react';

function MyComponent() {
  return (
    <Fragment>
      <div>内容1</div>
      <div>内容2</div>
    </Fragment>
  );
}

function MyComponent() {
  return (
    <>
      <div>内容1</div>
      <div>内容2</div>
    </>
  );
}

import React, { Fragment } from 'react';

function MyComponent() {
  return (
    <Fragment>
      <div>内容1</div>
      <div>内容2</div>
    </Fragment>
  );
}

export default MyComponent;

import React from 'react';

function MyComponent() {
  return (
    <>
      <div>内容1</div>
      <div>内容2</div>
    </>
  );
}

export default MyComponent;