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import { MarkdownSerializer as ProseMirrorMarkdownSerializer } from 'prosemirror-markdown/src/to_markdown';
import { DOMParser as ProseMirrorDOMParser } from 'prosemirror-model';
const wrapHtmlPayload = (payload) => `<div>${payload}</div>`;
/**
* A markdown serializer converts arbitrary Markdown content
* into a ProseMirror document and viceversa. To convert Markdown
* into a ProseMirror document, the Markdown should be rendered.
*
* The client should provide a render function to allow flexibility
* on the desired rendering approach.
*
* @param {Function} params.render Render function
* that parses the Markdown and converts it into HTML.
* @returns a markdown serializer
*/
export default ({ render = () => null, serializerConfig }) => ({
/**
* Converts a Markdown string into a ProseMirror JSONDocument based
* on a ProseMirror schema.
* @param {ProseMirror.Schema} params.schema A ProseMirror schema that defines
* the types of content supported in the document
* @param {String} params.content An arbitrary markdown string
* @returns A ProseMirror JSONDocument
*/
deserialize: async ({ schema, content }) => {
const html = await render(content);
if (!html) {
return null;
}
const parser = new DOMParser();
const {
body: { firstElementChild },
} = parser.parseFromString(wrapHtmlPayload(html), 'text/html');
const state = ProseMirrorDOMParser.fromSchema(schema).parse(firstElementChild);
return state.toJSON();
},
/**
* Converts a ProseMirror JSONDocument based
* on a ProseMirror schema into Markdown
* @param {ProseMirror.Schema} params.schema A ProseMirror schema that defines
* the types of content supported in the document
* @param {String} params.content A ProseMirror JSONDocument
* @returns A Markdown string
*/
serialize: ({ schema, content }) => {
const proseMirrorDocument = schema.nodeFromJSON(content);
const { nodes, marks } = serializerConfig;
const serializer = new ProseMirrorMarkdownSerializer(nodes, marks);
return serializer.serialize(proseMirrorDocument, {
tightLists: true,
});
},
});
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