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import { CodeBlockLowlight } from '@tiptap/extension-code-block-lowlight';
import * as lowlight from 'lowlight';
import { defaultMarkdownSerializer } from 'prosemirror-markdown/src/to_markdown';
const extractLanguage = (element) => element.getAttribute('lang');
const ExtendedCodeBlockLowlight = CodeBlockLowlight.extend({
addAttributes() {
return {
language: {
default: null,
parseHTML: (element) => {
return {
language: extractLanguage(element),
};
},
},
/* `params` is the name of the attribute that
prosemirror-markdown uses to extract the language
of a codeblock.
https://github.com/ProseMirror/prosemirror-markdown/blob/master/src/to_markdown.js#L62
*/
params: {
parseHTML: (element) => {
return {
params: extractLanguage(element),
};
},
},
class: {
default: 'code highlight js-syntax-highlight',
},
};
},
renderHTML({ HTMLAttributes }) {
return ['pre', HTMLAttributes, ['code', {}, 0]];
},
}).configure({
lowlight,
});
export const tiptapExtension = ExtendedCodeBlockLowlight;
export const serializer = defaultMarkdownSerializer.nodes.code_block;
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