that-hypermnesiac-guy/esm.js

33 lines
1002 B
JavaScript

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