let params = process.argv.slice(2)

const moduleStr = params.shift()
const [ esmodule, exported ] = (moduleStr || '').split(':')

const optionReg = /^-{1,2}(.*?)([:=](.*?))?$/
const args = params.filter( s=> optionReg.test(s) )
				.reduce( (opt,str)=> {
					let [ , prop, , value ] = optionReg.exec(str)
					return Object.assign( opt, {[prop]: value || true} )
					// return hasValue ? { ...opt, [prop]: value || true }
									// : opt
				}, 
				params.filter( s=> !optionReg.test(s) )
			)
//console.log( process.argv, esmodule, exported, args )

let mod = 
require('esm')( module, {await: true} )
( `./${esmodule || require('./package.json').module}` )

let toCall = mod[ exported || 'default' ]
let returned =
	typeof toCall == 'function'
		? toCall( args )
		: toCall
//console.log( 'type' , typeof returned, returned instanceof Promise )
returned instanceof Promise
	? returned.then( ret=> console.log(ret||''), e=>console.error(e) )
	: console.log( returned || '' )

module.exports = mod