@earthtone/grayson-generator/cli.js

#!/usr/bin/env node
const fs = require('fs')
const grayson = require('./lib/grayson')
const graysonPkg = require('./package.json')

const defaults = require('./lib/_defaults.json')
const argv = require('minimist')(process.argv.slice(2))
const pkg = fs.existsSync(`${process.cwd()}/package.json`)
  ? require(`${process.cwd()}/package.json`).grayson
    ? require(`${process.cwd()}/package.json`).grayson
    : {}
  : {}

const helpMessage = `
USAGE:
  $ grayson [options]

OPTIONS:

  --help, -h    Prints this message
  --version, -v  Prints Grayson Version
  --input, -i    Input: Specific MD file or directory of multiple MD files 
  --output, -o  Output: Target directory for generated HTML output
  --mode, -m    Mode: "pages", "slides", "blog" -- defaults to "pages"

MODES:
  Pages: Generate one HTML file per MD file input
  Slides: Outputs one HTML file with all MD content contained in ".slide" element
  Blog: Like pages, with the automatic generation of an "index.html" file if none given
`

if (argv.version || argv.v) {
  console.log(graysonPkg.version)
}

if (argv.help || argv.h) {
  console.log(helpMessage)
}

if (!argv.output && argv.o) {
  argv.output = argv.o
}

if (!argv.input && argv.i) {
  argv.input = argv.i
}

if (!argv.mode && argv.m) {
  argv.mode = argv.m
}

const metadata = Object.assign({}, defaults, pkg.metadata)
const options = Object.assign({ input: process.cwd(), output: process.cwd() }, pkg, argv, { metadata })
grayson(options)