@mieweb/wikigdrive/esm/src/odt/postprocess/convertMathMl.js

Google Drive to MarkDown synchronization

import { walkRecursiveSync } from '../markdownNodesUtils.js';
// Related tests:
// test ./example-document.md
export function convertMathMl(markdownChunks) {
    walkRecursiveSync(markdownChunks.body, (chunk, ctx) => {
        if (!(chunk.isTag && chunk.tag === 'MATHML')) {
            return;
        }
        const prevChunk = chunk.parent.children[ctx.nodeIdx - 1];
        const nextChunk = chunk.parent.children[ctx.nodeIdx + 1];
        if (prevChunk?.isTag === false || nextChunk?.isTag === false) {
            const text = chunk.children.filter(c => c.isTag === false).map(c => c['text']).join('\n');
            chunk.parent.children.splice(ctx.nodeIdx, 1, {
                isTag: false,
                text: '$$' + text + '$$'
            });
            return;
        }
        chunk.tag = 'PRE';
        chunk.payload.lang = 'math';
        const brNode = markdownChunks.createNode('EMPTY_LINE/');
        chunk.parent.children.splice(ctx.nodeIdx + 1, 0, brNode);
    });
}