elm-makeについて調べたこと

Elm Platform 0.18.0 - a way to run all Elm tools

Usage: elm <command> [<args>]

Available commands include:

  make      Compile an Elm file or project into JS or HTML
  package   Manage packages from <http://package.elm-lang.org>
  reactor   Develop with compile-on-refresh and time-travel debugging
  repl      A REPL for running individual expressions

You can learn more about a specific command by running things like:

  elm make --help
  elm package --help
  elm <command> --help

In all these cases we are simply running 'elm-<command>' so if you create an
executable named 'elm-foobar' you will be able to run it as 'elm foobar' as
long as it appears on your PATH.

elm-make 0.18 (Elm Platform 0.18.0)

Usage: elm-make [FILES...] [--output FILE] [--yes] [--report FORMAT] [--debug]
                [--warn] [--docs FILE] [--prepublish] [--prepublish-core]
  build Elm projects

Available options:
  -h,--help                Show this help text
  --output FILE            Write result to the given .html or .js FILE.
  --yes                    Reply 'yes' to all automated prompts.
  --report FORMAT          Format of error and warning reports (e.g.
                           --report=json)
  --debug                  Generate programs in debug mode.
  --warn                   Report warnings to improve code quality.
  --docs FILE              Write documentation to FILE as JSON.

Examples:
  elm-make Main.elm                     # compile to HTML in index.html
  elm-make Main.elm --output main.html  # compile to HTML in main.html
  elm-make Main.elm --output elm.js     # compile to JS in elm.js
  elm-make Main.elm --warn              # compile and report warnings

Full guide to using elm-make at <https://github.com/elm-lang/elm-make>

 elm-make [FILES...] [--output FILE]

elm-make src/elm/Page/Main.elm --output=index.js

elm-make src/elm/Page/Main.elm --output=index.js
elm-make Main.elm --output=main.html

elm-make src/elm/Page/Main.elm --output=index.js  --yes

elm-make src/elm/Page/Map/Main.elm --output=index.js --warn

elm-make PhotoGroove.elm --output elm.js --warn
You should see this warning:

Top-level value `main` does not have a type annotation.
 
139| main =
     ^^^^
I inferred the type annotation so you can copy it into your code:
 
main : Program Never Model Msg