--- title: Elixir v1.18.0 released | daily.dev description: Elixir v1.18.0 introduces type checking of function calls, a built-in JSON module with encoding/decoding, LSP listener support via Mix.Project :listeners... canonical: https://daily.dev/posts/elixir-v1-18-0-released-zmhrwydcg twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Elixir v1.18.0 released | daily.dev og:description: Elixir v1.18.0 introduces type checking of function calls, a built-in JSON module with encoding/decoding, LSP listener support via Mix.Project :listeners... og:url: https://daily.dev/posts/elixir-v1-18-0-released-zmhrwydcg og:image: https://api.daily.dev/og/posts/ZMhRWydcG.png og:image:alt: Elixir v1.18.0 released 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. # Elixir v1.18.0 released **[Elixir Forum](https://daily.dev/sources/elixirforum)** · 5 min read · 0 upvotes · 0 comments ## Summary Elixir v1.18.0 introduces type checking of function calls, a built-in JSON module with encoding/decoding, LSP listener support via Mix.Project :listeners configuration, and parameterized tests in ExUnit. Other highlights include Enum.sum_by/2 and Enum.product_by/2, Registry.lock/3 for local locking, PartitionSupervisor.resize!/2, Unicode 16.0 support, experimental PowerShell scripts for Windows, and deprecation of `unless` in favor of `if`. Several hard deprecations are also introduced across EEx, Kernel, and Mix. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Elixir v1.20.0 released](https://daily.dev/posts/elixir-v1-20-0-released-7hyajmuxu) · Elixir Forum · 1 upvotes · 0 comments - [Elixir v1.19 released: enhanced type checking, broader type inference, and up to 4x faster compilation for large projects](https://daily.dev/posts/elixir-v1-19-released-enhanced-type-checking-broader-type-inference-and-up-to-4x-faster-compilati-rc2s8j4bd) · Elixir · 22 upvotes · 0 comments - [Elixir v1.20.0-rc.0 released](https://daily.dev/posts/elixir-v1-20-0-rc-0-released-dwawfn6o5) · Elixir Forum · 0 upvotes · 0 comments - [Elixir v1.20 released: now a gradually typed language](https://daily.dev/posts/elixir-v1-20-released-now-a-gradually-typed-language-081x31cuq) · Elixir · 4 upvotes · 0 comments --- Tags: [#elixir](https://daily.dev/tags/elixir) [View this post on daily.dev](https://daily.dev/posts/elixir-v1-18-0-released-zmhrwydcg) ```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":"Elixir v1.18.0 released","url":"https://daily.dev/posts/elixir-v1-18-0-released-zmhrwydcg","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/elixir-v1-18-0-released-zmhrwydcg"},"datePublished":"2026-07-09T07:04:38.992Z","dateModified":"2026-07-09T07:05:29.510Z","description":"Elixir v1.18.0 introduces type checking of function calls, a built-in JSON module with encoding/decoding, LSP listener support via Mix.Project :listeners...","image":"https://media.daily.dev/image/upload/s--HRgLpUt6--/f_auto/v1722860399/public/Placeholder%2003","thumbnailUrl":"https://media.daily.dev/image/upload/s--HRgLpUt6--/f_auto/v1722860399/public/Placeholder%2003","isAccessibleForFree":true,"articleSection":"Elixir Forum","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":"Elixir Forum","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/c7c05785a0da4507bf9ae120a7e487e6","url":"https://daily.dev/sources/elixirforum"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/elixir-v1-18-0-released-zmhrwydcg","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"elixir","timeRequired":"PT5M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Elixir Forum","item":"https://daily.dev/sources/elixirforum"},{"@type":"ListItem","position":3,"name":"Elixir v1.18.0 released"}]} ```