module.exports = (ctx) => {
  return {
    parser: ctx.ext ==='.sml' ? 'posthtml-sugarss' : false,
    from: 'path/to/src/file.html',
    to: 'path/to/dest/file.html'
  }
}

parser: 'posthtml-sugarss'

from: 'path/to/dest/file.html'

to: 'path/to/dest/file.html'

render: 'posthtml-jsx'

export default config = (ctx) => {
  return {
    parser: ctx.ext === '.sml' ? 'posthtml-sugarml' : false,
    from: 'client/index.html',
    to: 'public/index.html'
  }
}

import { dirname } from 'path'
import { readFileSync } from 'fs'
import posthtml from 'posthtml'
import optionsrc from 'posthtml-load-options'
const sml = readFileSync('./client/index.sml', 'utf8')
const ctx = { ext: dirname(sml) }
optionsrc(ctx).then((options) => {
  posthtml()
    .process(sml, options)
    .then((result) => console.log(result.html))
}))