EDIT Sept 2021:

使用挂钩的答案的更新版本。

此版本可以更好地跟踪编辑器中的更改。它还使用import 语句，而不是直接从wp 全球的此方法与@wordpress/scripts 在排队时，包将正确添加此文件的依赖项。访问wp 全局仍将工作，但您必须确保手动管理脚本依赖项。

感谢评论中的所有人！

import { useState, useEffect } from \'@wordpress/element\';
import { registerPlugin } from \'@wordpress/plugins\';
import { PluginPrePublishPanel } from \'@wordpress/edit-post\';
import { useSelect, useDispatch } from \'@wordpress/data\';
import { count } from \'@wordpress/wordcount\';
import { serialize } from \'@wordpress/blocks\';

const PrePublishCheckList = () => {
    // Manage the messaging in state.
    const [wordCountMessage, setWordCountMessage] = useState(\'\');
    const [catsMessage, setCatsMessage] = useState(\'\');
    const [tagsMessage, setTagsMessage] = useState(\'\');
    const [featuredImageMessage, setFeaturedImageMessage] = useState(\'\');

    // The useSelect hook is better for retrieving data from the store.
    const { blocks, cats, tags, featuredImageID } = useSelect((select) => {
        return {
            blocks: select(\'core/block-editor\').getBlocks(),
            cats: select(\'core/editor\').getEditedPostAttribute(\'categories\'),
            tags: select(\'core/editor\').getEditedPostAttribute(\'tags\'),
            featuredImageID:
                select(\'core/editor\').getEditedPostAttribute(\'featured_media\'),
        };
    });

    // The useDispatch hook is better for dispatching actions.
    const { lockPostSaving, unlockPostSaving } = useDispatch(\'core/editor\');

    // Put all the logic in the useEffect hook.
    useEffect(() => {
        let lockPost = false;
        // Get the WordCount
        const wordCount = count(serialize(blocks), \'words\');
        if (wordCount < 500) {
            lockPost = true;
            setWordCountMessage(`${wordCount} - Minimum of 500 required.`);
        } else {
            setWordCountMessage(`${wordCount}`);
        }

        // Get the category count
        if (!cats.length || (cats.length === 1 && cats[0] === 1)) {
            lockPost = true;
            setCatsMessage(\'Missing\');
            // Check that the cat is not Uncategorized - this assumes that the ID of Uncategorized is 1, which it would be for most installs.
            if (cats.length === 1 && cats[0] === 1) {
                setCatsMessage(\'Cannot use Uncategorized\');
            }
        } else {
            setCatsMessage(\'Set\');
        }

        // Get the tags
        if (tags.length < 3 || tags.length > 5) {
            lockPost = true;
            setTagsMessage(\'Required 3 - 5 tags\');
        } else {
            setTagsMessage(\'Set\');
        }
        // Get the featured image
        if (featuredImageID === 0) {
            lockPost = true;
            setFeaturedImageMessage(\'Not Set\');
        } else {
            setFeaturedImageMessage(\' Set\');
        }

        if (lockPost === true) {
            lockPostSaving();
        } else {
            unlockPostSaving();
        }
    }, [blocks, cats, tags, featuredImageID]);

    return (
        <PluginPrePublishPanel title={\'Publish Checklist\'}>
            <p>
                <b>Word Count:</b> {wordCountMessage}
            </p>
            <p>
                <b>Categories:</b> {catsMessage}
            </p>
            <p>
                <b>Tags:</b> {tagsMessage}
            </p>
            <p>
                <b>Featured Image:</b> {featuredImageMessage}
            </p>
        </PluginPrePublishPanel>
    );
};

registerPlugin(\'pre-publish-checklist\', { render: PrePublishCheckList });

Old Version:

const { registerPlugin } = wp.plugins;
const { PluginPrePublishPanel } = wp.editPost;
const { select, dispatch } = wp.data;
const { count } = wp.wordcount;
const { serialize } = wp.blocks;
const { PanelBody } = wp.components;

const PrePublishCheckList = () => {
    let lockPost = false;

    // Get the WordCount
    const blocks = select( \'core/block-editor\' ).getBlocks();
    const wordCount = count( serialize( blocks ), \'words\' );
    let wordCountMessage = `${wordCount}`;
    if ( wordCount < 500 ) {
        lockPost = true;
        wordCountMessage += ` - Minimum of 500 required.`;
    }

    // Get the cats
    const cats = select( \'core/editor\' ).getEditedPostAttribute( \'categories\' );
    let catsMessage = \'Set\';
    if ( ! cats.length ) {
        lockPost = true;
        catsMessage = \'Missing\';
    } else {
        // Check that the cat is not uncategorized - this assumes that the ID of Uncategorized is 1, which it would be for most installs.
        if ( cats.length === 1 && cats[0] === 1 ) {
            lockPost = true;
            catsMessage = \'Cannot use Uncategorized\';
        }
    }

    // Get the tags
    const tags = select( \'core/editor\' ).getEditedPostAttribute( \'tags\' );
    let tagsMessage = \'Set\';
    if ( tags.length < 3 || tags.length > 5 ) {
        lockPost = true;
        tagsMessage = \'Required 3 - 5 tags\';
    }

    // Get the featured image
    const featuredImageID = select( \'core/editor\' ).getEditedPostAttribute( \'featured_media\' );
    let featuredImage = \'Set\';

    if ( featuredImageID === 0 ) {
        lockPost = true;
        featuredImage = \'Not Set\';
    }

    // Do we need to lock the post?
    if ( lockPost === true ) {
        dispatch( \'core/editor\' ).lockPostSaving();
    } else {
        dispatch( \'core/editor\' ).unlockPostSaving();
    }
    return (
        <PluginPrePublishPanel title={ \'Publish Checklist\' }>
            <p><b>Word Count:</b> { wordCountMessage }</p>
            <p><b>Categories:</b> { catsMessage }</p>
            <p><b>Tags:</b> { tagsMessage }</p>
            <p><b>Featured Image:</b> { featuredImage }</p>
        </PluginPrePublishPanel>
    )
};

registerPlugin( \'pre-publish-checklist\', { render: PrePublishCheckList } );

显示：

上述解决方案解决了问题中列出的要求。可以扩展的一件事是类别检查，我正在对类别ID进行一些假设。

为了简洁易读，我将所有检查都保存在同一个组件中。我建议将每个部分移动到一个单独的组件中，并可能使它们成为更高阶的组件（即使用WordCount）。

我有内联评论，解释正在做什么，但如果有任何问题，我很乐意进一步解释。

编辑：下面是我将脚本排队的方式

function enqueue_block_editor_assets() {
    wp_enqueue_script(
        \'my-custom-script\', // Handle.
        plugin_dir_url( __FILE__ ) . \'/build/index.js\',
        array( \'wp-blocks\', \'wp-i18n\', \'wp-element\', \'wp-editor\', \'wp-edit-post\', \'word-count\' ) // Dependencies, defined above.
    );
}
add_action( \'enqueue_block_editor_assets\', \'enqueue_block_editor_assets\' );

添加有关构建过程的更多详细信息。我正在使用@wordpress/scripts 并运行以下脚本：

"scripts": {
    "build": "wp-scripts build",
    "start": "wp-scripts start"
  },

编辑2：

您可以通过以下方式获取附件数据：

wp.data.select(\'core\').getMedia( ID )