--- title: Bun v1.3.8 | daily.dev description: Bun v1.3.8 introduces a built-in CommonMark-compliant Markdown parser written in Zig with three rendering modes: HTML output, custom callbacks for... canonical: https://daily.dev/posts/bun-v1-3-8-mqtyczarf twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Bun v1.3.8 | daily.dev og:description: Bun v1.3.8 introduces a built-in CommonMark-compliant Markdown parser written in Zig with three rendering modes: HTML output, custom callbacks for... og:url: https://daily.dev/posts/bun-v1-3-8-mqtyczarf og:image: https://api.daily.dev/og/posts/MQtYCZarF.png og:image:alt: Bun v1.3.8 og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Bun v1.3.8 **[Bun](https://daily.dev/sources/bun)** · 4 min read · 70 upvotes · 1 comments ## Summary Bun v1.3.8 introduces a built-in CommonMark-compliant Markdown parser written in Zig with three rendering modes: HTML output, custom callbacks for terminal/custom formatting, and React elements. The bundler now supports --metafile-md to generate LLM-friendly Markdown visualizations of module graphs for bundle analysis. This release fixes 8 issues including crashes in heap snapshots and node:vm, HTTP/2 stream handling for gRPC calls, and npm global installation on Windows. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Community discussion Top comments from developers on daily.dev. **@apperside** · 0 upvotes > This is huge!!!!! 🚀 ## Similar posts on daily.dev - [Bun v1.3.1](https://daily.dev/posts/bun-v1-3-1-6ud9r04nj) · Bun · 51 upvotes · 2 comments --- Tags: [#javascript](https://daily.dev/tags/javascript), [#react](https://daily.dev/tags/react), [#markdown](https://daily.dev/tags/markdown), [#bun](https://daily.dev/tags/bun) [View this post on daily.dev](https://daily.dev/posts/bun-v1-3-8-mqtyczarf) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Bun v1.3.8","url":"https://daily.dev/posts/bun-v1-3-8-mqtyczarf","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/bun-v1-3-8-mqtyczarf"},"datePublished":"2026-01-29T10:31:56.186Z","dateModified":"2026-01-29T10:32:14.089Z","description":"Bun v1.3.8 introduces a built-in CommonMark-compliant Markdown parser written in Zig with three rendering modes: HTML output, custom callbacks for...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/f1a20e14913e65b8576c67237a25f39d?_a=AQAEulh","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/f1a20e14913e65b8576c67237a25f39d?_a=AQAEulh","isAccessibleForFree":true,"articleSection":"Bun","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Bun","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/9d715eb44dae4d74a2cebd8871d91a0d","url":"https://daily.dev/sources/bun"},"commentCount":1,"discussionUrl":"https://daily.dev/posts/bun-v1-3-8-mqtyczarf","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":70},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":1}],"keywords":"javascript,react,markdown,bun","timeRequired":"PT4M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Bun","item":"https://daily.dev/sources/bun"},{"@type":"ListItem","position":3,"name":"Bun v1.3.8"}]} {"@context":"https://schema.org","@type":"WebPage","@id":"https://daily.dev/posts/bun-v1-3-8-mqtyczarf","comment":[{"@type":"Comment","text":"This is huge!!! 🚀","datePublished":"2026-02-03T12:47:27.944Z","url":"https://daily.dev/posts/MQtYCZarF#c-onZVfQmhw","author":{"@type":"Person","name":"Apperside","url":"https://daily.dev/apperside","image":"https://avatars.githubusercontent.com/u/5955338?v=4"}}]} ```