Block Editor convert

<!--So the script below is working absolutely fine. All you need to do is fill up the array with post ids which are in classic editor
and then paste localStorage.setItem('gutenberg_post_index', 0);
in the console and refresh the page id or the complete url on edit post page. Then it will start working and converting the remaining
posts.-->

// ==UserScript==
// @name         Classic to Block Userscript
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        http://test123.local/wp-admin/post.php?post=*&action=edit
// @icon         data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

     nextPost(parseInt(localStorage.getItem('gutenberg_post_index')));
  //
  // 3. Update this URL to match your site
  //
  function getURL(postID) {

    return `http://test123.local/wp-admin/post.php?post=${postID}&action=edit`;
  }

  function nextPost(currentIndex) {

    // Get current index from LocalStorage
    if (Number.isNaN(currentIndex)) {
      console.error('No currentIndex found in LocalStorage')
      return;
    }

    //
    // 4. Add your post IDs here
    //
    const postIDs = [452, 449, 443, 434];

    const postID = postIDs[currentIndex];
    if (!postID) {
      console.error('No postID for index =', currentIndex);
      return;
    }

    // Never convert same post twice (prevent potential infinite loop in case of redirect)
//   const lastPost = localStorage.getItem('gutenberg_post_id');
 //   if (lastPost === postID) {
//     console.error('Already processed this post!')
//      return;
 //   }

    localStorage.setItem('gutenberg_post_index', currentIndex);
    localStorage.setItem('gutenberg_post_id', postID);

    // Redirect to current post if need be
    const url = getURL(postID);
    if (url !== window.location.href) {
      console.log('Redirecting to post', currentIndex, postID);
      window.location.href = url;
      return;
    }

    // Convert post
    setTimeout(() => {

      convertPost(({ success, error }) => {

        if (success) {
          console.log(`Converted post ${currentIndex + 1} of ${postIDs.length}`, postID, window.location.href);
        } else {
          console.error(`Failed to convert post ${currentIndex + 1} of ${postIDs.length}`, postID, window.location.href, error);
        }

        // Go to next page
        nextPost(++currentIndex);

      });

    }, 3000);
  }

    function convertPost(callback) {
//has-advanced-toolbar is not present in the dom for the class name --Redc
   let toolbar = document.querySelector('.block-library-classic__toolbar');
   if (!toolbar) return callback({ error: 'no_toolbar' });

    // Click toolbar
  toolbar.click();

    // Page must be focused for toolbar to be accessible.
   waitForMenuToggleButton((menuToggleButton) => {

      // Click menu toggle button
       menuToggleButton.click();

       onNextIdleFrame(() => {
          //using components-button components-toolbar-button instead  block-editor-block-settings-menu__control to test --Redc
        const convertToBlocksButton = document.getElementsByClassName("components-button components-toolbar-button")[0];
           //   [...document.getElementsByClassName("components-button components-toolbar-button")]
         // .find(button => button.textContent === 'Convert to Blocks');
        if (!convertToBlocksButton) return callback({ error: 'no_convertToBlocksButton' });

        // Click convert to blocks

        convertToBlocksButton.click();

        // Wait for blocks to render & autosave to complete
        setTimeout(() => {
//class="components-button editor-post-publish-button editor-post-publish-button__button is-primary"
          const updateButton = document.getElementsByClassName("editor-post-publish-button")[0];
          if (!updateButton) return callback({ error: 'no_convertToBlocksButton' });

          // Click Update
          updateButton.click();

          // Wait for update to complete
          setTimeout(() => {
            return callback({ success: true });
          });

        }, 3000);
      });
    });
 }
    function waitForMenuToggleButton(callback) {
        //.block-editor-block-list__block .wp-block .is-selected
    const menuToggleButton = document.querySelector('.wp-block-freeform');
    if (menuToggleButton) return callback(menuToggleButton);

    console.log('Unable to get toggle button in Post Editor. It may be that Wordpress page is not focused. Maybe try clicking on the tab in your browser.')
    setTimeout(() => {
      waitForMenuToggleButton(callback);
    }, 1000);
  }
    function onNextIdleFrame(callback) {
    requestIdleCallback(() => requestAnimationFrame(callback));
  }
})();