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Elm

Compiler for Elm, a functional language for reliable webapps. observed · 2026-08-28

github.com/elm/compiler · homepage · Haskell · BSD-3-Clause (permissive) observed · 2026-08-28

Health v2 · maintenance only

86/100

  • Activity 99
  • Release rhythm 60
  • Longevity 100
How is this computed?

round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.

  • gap_med: n/a
  • age_days: 5249
  • days_rel: 58
  • days_push: 7
  • n_releases_24m: 1

Full methodology

Adoption not part of the score

7886 stars · 688 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

The official compiler for Elm, a statically typed functional programming language designed for building reliable web applications that compile down to JavaScript. Written in Haskell, it emphasizes friendly error messages, strict type safety, and a practical guarantee of no runtime exceptions in Elm code.

Use cases

  • compile elm source code to optimized javascript bundles
  • build frontend web apps with strong static typing
  • find a language that eliminates runtime exceptions in production
  • learn functional programming for web development
  • set up the elm toolchain locally with make, repl, and package management
  • migrate a javascript frontend to a more reliable typed language

When to choose

  • you want guaranteed no-runtime-exceptions frontend code with a friendly compiler
  • you prefer the Elm Architecture pattern for state management in web UIs
  • you are teaching or learning typed functional programming in a web context
  • you value compiler-enforced refactoring and semantic versioning of packages

When to avoid

  • you need deep interop with the npm ecosystem or existing javascript libraries without ports
  • you need server-side rendering or backend execution, since Elm targets the browser
  • you require frequent language changes or a large rapidly evolving ecosystem
  • your team depends on dynamic typing or gradual typing workflows

Facets

cli-tool · maturity stable

compiler programming-language type-system developer-tools programming-languages compilers web-development frontend windows browser cli cross-platform elm functional-programming static-typing no-runtime-exceptions javascript-compilation haskell elm-architecture frontend-language linux macos

2 sources

Member repositories

RepositoryRoleHealth v2
elm/compilermain86
elm/coresdk32
elm/elm-lang.orgdocs73

For agents

markdown · JSON · MCP: product_card(name="elm/compiler")

Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem