Moonscript - read environment variable shorthand

ENV.moon

-- Package that helper into the worlds shortest module.
-- Usage: import HOME, SHELL, EDITOR from require 'ENV'
setmetatable {}, __index: (k) => os.getenv k

env_shorthand.moon

-- Nifty shorthand for creating local variables from environment variables in moonscript using metatables
import HOME, SHELL, EDITOR from setmetatable {}, __index: (k) => os.getenv k

-- are both equivalent to:
HOME = os.getenv "HOME"
SHELL = os.getenv "SHELL"
EDITOR = os.getenv "EDITOR"

example.moon

import HOME, SHELL, EDITOR from require 'ENV'