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Elm filter for webassets

Project description

Travis CI Covearge Status Latest release Python versions License

Elm filter for webassets

Filter for compiling Elm files using webassets.


pip install webassets-elm

As of version 0.2.0, this plugin requires Elm 0.19 or newer (building with elm make).

If you need to build your Elm project with elm-make (Elm 0.18 and older), you can pin your webassets-elm package to version 0.1.7.

Basic usage

from webassets.filter import register_filter
from webassets_elm import Elm



Optionally as an evironment variable you can have:

  • ELM_BIN: alternative path to elm if it is not available globally (e.g. node_modules/.bin/elm).
  • ELM_OPTIMIZE: enable the Elm compiler optimization option. Recommended for production output.
  • ELM_DEBUG: enable the Elm compiler debug option.


Flask with flask-assets
from flask import Flask
from flask_assets import Bundle, Environment
from webassets.filter import register_filter
from webassets_elm import Elm

app = Flask(__name__)

assets = Environment(app)

elm_js = Bundle('elm/main.elm', filters=('elm',), output='app.js')
assets.register('elm_js', elm_js)
Django with django-assets
from django_assets import Bundle, register
from webassets.filter import register_filter
from webassets_elm import Elm


elm_js = Bundle('elm/main.elm', filters=('elm',), output='app.js')
register('elm_js', elm_js)


Feel free to report an issue, open a pull request, or drop a line.

Don’t forget to write and run tests, and format code with Black:

python test
black .

Please note you need elm binary available to run tests, here you can find different ways to install Elm.

Project details

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webassets-elm-0.2.1.tar.gz (3.2 kB view hashes)

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webassets_elm-0.2.1-py3-none-any.whl (4.0 kB view hashes)

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