25 lines
767 B
JavaScript
25 lines
767 B
JavaScript
import { memoize } from 'lodash';
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const parser = new DOMParser();
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export default ({ renderMarkdown }) => ({
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resolveUrl: memoize(async (canonicalSrc) => {
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const html = await renderMarkdown(`[link](${canonicalSrc})`);
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if (!html) return canonicalSrc;
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const { body } = parser.parseFromString(html, 'text/html');
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return body.querySelector('a').getAttribute('href');
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}),
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renderDiagram: memoize(async (code, language) => {
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const backticks = '`'.repeat(4);
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const html = await renderMarkdown(`${backticks}${language}\n${code}\n${backticks}`);
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const { body } = parser.parseFromString(html, 'text/html');
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const img = body.querySelector('img');
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if (!img) return '';
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return img.dataset.src || img.getAttribute('src');
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}),
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});
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