A plugin to compile Elm files with Gulp (or other Vinyl sources). The latest version (0.8.x) only supports Elm 0.19, use 0.7.x to compile earlier versions of Elm.

var gulp = require('gulp');
var elm  = require('gulp-elm');

gulp.task('elm', function(){
  return gulp.src('src/Main.elm')
    .pipe(elm({ optimize: true }))
    .pipe(gulp.dest('dist/'));
});

gulp.task('elm-bundle', function(){
  return gulp.src('src/**/Main.elm')
    .pipe(elm.bundle('bundle.js', { optimize: true }))
    .pipe(gulp.dest('dist/'));
});

compile elm files.

• elm (default: "node_modules/.bin/elm" if it exists, otherwise "elm")

  elm executable file.

• cwd (default: current working directory)

  The working directory in which to execute elm (this should be the directory with elm.json).

• filetype (default: "js")

  elm output file type.

  "js" (or "javascript") or "html".

• optimize (default: false)

  add --optimize option to elm

• debug (default: false)

  add --debug option to elm

compile and bundle elm files into a single file.

you must pass the name of the output file

• elm (default: "node_modules/.bin/elm" if it exists, otherwise "elm")

  elm executable file.

• cwd (default: current working directory)

  The working directory in which to execute elm (this should be the directory with elm.json).

• optimize (default: false)

  add --optimize option to elm

• debug (default: false)

  add --debug option to elm

• 0.8.2
  • Update confusing error message (fixes #46, thanks @barbeque!)
• 0.8.1
  • Fix error when compiling file with no output (fixes #37)
• 0.8.0
  • Elm 0.19 support (drops support for Elm 0.18 and lower)
  • Thanks to @vodik from @sangoma for help with this upgrade!
• 0.7.3
  • Support Gulp 4 and Node.js 10
• 0.7.x
  • Add cwd option
• 0.6.x
  • Add debug option for Elm 0.18