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chore: update the Marked dependency #36

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Merged
tomherni merged 1 commit into from
Jul 23, 2026
Merged

chore: update the Marked dependency #36

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10 changes: 5 additions & 5 deletions package-lock.json
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2 changes: 1 addition & 1 deletion package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -33,7 +33,7 @@
"js-yaml": "^4.1.0",
"lightningcss": "^1.32.0",
"lint-staged": "^17.0.7",
"marked": "^11.1.0",
"marked": "^18.0.7",
"prettier": "^3.8.4",
"prismjs": "^1.29.0",
"quote-quote": "^1.3.0",
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48 changes: 17 additions & 31 deletions src/build/posts/parse-markdown.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -14,7 +14,7 @@ export function parseMarkdown(content: string): string {
addHeadingAnchor(renderer);
secureExternalLinks(renderer);

const parsed = marked(content, { renderer });
const parsed = marked.parse(content, { renderer });

// Safeguard in case an async plugin ever makes it return a Promise.
if (typeof parsed !== 'string') {
Expand All @@ -24,52 +24,38 @@ export function parseMarkdown(content: string): string {
}

function addSyntaxHighlighting(renderer: Renderer): void {
renderer.code = (code, infostring) => {
if (!infostring) {
return `<pre><code>${encode(code)}</code></pre>`;
renderer.code = ({ text, lang }) => {
if (!lang) {
return `<pre><code>${encode(text)}</code></pre>`;
}

const language = prism.languages[infostring];

const language = prism.languages[lang];
if (!language) {
throw new Error(
`Language not supported by Prism: ${infostring}. It may needs to be imported.`,
`Language "${lang}" is not supported by Prism; it may need to be imported.`,
);
}

const highlightedCode = prism.highlight(code, language, infostring);
return `<pre><code class="language-${infostring}">${highlightedCode}</code></pre>`;
const highlighted = prism.highlight(text, language, lang);
return `<pre><code class="language-${lang}">${highlighted}</code></pre>`;
};
}

function addHeadingAnchor(renderer: Renderer): void {
const originalHeadingRenderer = renderer.heading;

renderer.heading = (text, level, raw) => {
const html = originalHeadingRenderer.call(renderer, text, level, raw);

renderer.heading = ({ text, depth }) => {
// Don't add anchors to the smaller headings.
if (level > 3) {
return html;
if (depth > 3) {
return `<h${depth}>${text}</h${depth}>`;
}

const headingId = slugify(raw);
return html
.replace(/<h(\d)/, (match) => `${match} id="${headingId}"`)
.replace(
/<\/h(\d)>/,
(match) => `<a href="#${headingId}" class="anchor">#</a>${match}`,
);
const id = slugify(text);
return `<h${depth} id="${id}">${text}<a href="#${id}" class="anchor">#</a></h${depth}>\n`;
};
}

function secureExternalLinks(renderer: Renderer): void {
const originalLinkRenderer = renderer.link;

renderer.link = (href, ...args) => {
const html = originalLinkRenderer.call(renderer, href, ...args);
return href && !href.startsWith(BUILD.baseUrl)
? html.replace('<a', '<a target="_blank" rel="noopener noreferrer"')
: html;
renderer.link = ({ text, href }) => {
return href.startsWith(BUILD.baseUrl)
? `<a href="${href}">${text}</a>`
: `<a href="${href}" target="_blank" rel="noopener noreferrer">${text}</a>`;
};
}