--- title: "Gleam JavaScript gets 30% faster" url: https://daily.dev/posts/gleam-javascript-gets-30-faster-pafqtyqvm source_url: https://gleam.run/news/gleam-javascript-gets-30-percent-faster type: article source: "Gleam" published: 2025-06-02T13:46:36.548Z updated: 2025-12-08T02:19:42.465Z tags: ["compiler", "gleam", "javascript", "performance"] reading_time: 19 upvotes: 51 comments: 1 language: 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. # Gleam JavaScript gets 30% faster **[Gleam](https://daily.dev/sources/gleam)** · 19 min read · 51 upvotes · 1 comments ## Summary Gleam v1.11.0 introduces significant performance improvements with 30% faster JavaScript compilation through optimized pattern matching using decision trees instead of linear if-else chains. The release adds new testing capabilities with built-in assert syntax, a dedicated dev/ directory for development code accessible via 'gleam dev' command, and enhanced language server features including better code actions and fault tolerance. Additional improvements include JavaScript bit array support for UTF-16/UTF-32, better documentation generation, and various developer experience enhancements. ## 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. **@catalin560** · 5 upvotes > who would have thought that writing basic vanilla javascript is faster than the bloated frameworks that are widely used today? > also this concept of writing in other languages that compile to JS is old as fuck, for example Rescript Lang has existed for years, Nim Lang does the same, and I'm pretty sure there are way more out there... its just that no one really cares about performance enough to learn these languages when it would be easier to just write vanilla JS in the first place... ## Similar posts on daily.dev - [Don’t just attend KubeCon \+ CloudNativeCon, Merge Forward your experience\!](https://daily.dev/posts/don-t-just-attend-kubecon-cloudnativecon-merge-forward-your-experience--l0rpp73x8) · CNCF · 0 upvotes · 0 comments - [Announcing H2 2026 KCDs](https://daily.dev/posts/announcing-h2-2026-kcds-m96goajm1) · CNCF · 1 upvotes · 0 comments - [Two months of Open Community Groups](https://daily.dev/posts/two-months-of-open-community-groups-asf52zhbs) · CNCF · 0 upvotes · 0 comments - [CNCF Unveils Schedule for KubeCon \+ CloudNativeCon Europe 2026](https://daily.dev/posts/cncf-unveils-schedule-for-kubecon-cloudnativecon-europe-2026-ikhcoa5cb) · CNCF · 2 upvotes · 0 comments - [CNCF Debuts KubeCon \+ CloudNativeCon Japan 2026 Schedule](https://daily.dev/posts/cncf-debuts-kubecon-cloudnativecon-japan-2026-schedule-xp5pyudub) · CNCF · 1 upvotes · 0 comments --- Tags: [#compiler](https://daily.dev/tags/compiler), [#gleam](https://daily.dev/tags/gleam), [#javascript](https://daily.dev/tags/javascript), [#performance](https://daily.dev/tags/performance) [View this post on daily.dev](https://daily.dev/posts/gleam-javascript-gets-30-faster-pafqtyqvm)