I haven’t used Elm since version 0.12. During my vacation, I wanted to get a deeper dive into the effort people have put into it since then. Elm’s compiler is great at identifying errors in your code, but it happened after I tried to run my code or use
elm-make on it.
Below are some of the plugins I found useful when writing Elm:
language-elm provides syntax highlighting and snippets. It forms the basis for every other plugin described.
1 apm install language-elm
elm-format is like
gofmt in that it formats Elm source code according to a standard set of rules based on the official Elm Style Guide. Installing the apm package is not enough though, you need to install the tool. I’d recommend using the following
brew command which grabs the recipe from the
1 brew install homebrew/devel-only/elm-format --devel
The recipe by default installs
elm-format for the last three(?) versions of Elm. We will need to create a symlink so that the atom package calls out to the right binary.
1 2 # Remember to substitute the version number if >= 0.19 is out ln -s "$(brew --prefix)/bin/elm-format-0.18" /usr/local/bin/elm-format
Once installed, Elm code will format to match the styling guide on save.
1 apm install elm-format
linter-elm-make brings in helpful error messages to Atom. It has options to lint as you type or on save.
To enable autocompletion, we will need to install elm-oracle via npm.
elm-oracle queries for information about values in Elm source files. I’d recommend to install it globally via [Yarn][yarn]:
1 yarn global add elm-oracle
elm-oracle is available, we will need elmjutsu to enable proper autocomplete.
1 apm install elmjutsu
After installing elmjutsu, we need to disable autocomplete for
language-elm and enable it for