elm
Functional frontend language compiler and toolchain
TLDR
SYNOPSIS
elm command [options]
DESCRIPTION
elm is the command-line tool for the Elm programming language, a functional language for frontend web development. It handles project initialization, compilation, package management, and development tools.Elm compiles to JavaScript with no runtime exceptions through its strong type system. The compiler provides friendly error messages that help fix issues.The reactor provides a development server with hot reloading, while repl offers interactive Elm evaluation.
PARAMETERS
COMMAND
Operation: init, make, reactor, repl, install, etc.init
Initialize new Elm project.make FILE
Compile Elm source file.--output FILE
Output file path.--optimize
Enable optimizations.reactor
Start development server.repl
Start interactive shell.install PACKAGE
Install Elm package.diff PACKAGE V1 V2
Show API differences between package versions.bump
Bump version based on API changes.publish
Publish package to the Elm package repository.
INSTALL
CAVEATS
Breaks with major versions (0.19 not compatible with 0.18). Limited JavaScript interop. Smaller ecosystem than mainstream languages. Strict type system has learning curve.
HISTORY
Elm was created by Evan Czaplicki as his thesis project in 2012. It pioneered the "Elm Architecture" pattern that influenced React/Redux and other frontend frameworks.
