Add awesome esm dependency and a simple launcher used as global npm install

This commit is contained in:
Thomas Di Grégorio 2019-04-10 23:50:07 +02:00
parent f0576081d1
commit 917e7b18b2
2 changed files with 59 additions and 0 deletions

40
bin/esm-cli.js Executable file
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#!/usr/bin/env node
const { resolve } = require('path')
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) )
)
const package = resolve('./package.json')
, modulo = resolve(esmodule)
//console.log( process.cwd(), package, modulo )
//console.log( process.argv, esmodule, exported, args )
let mod =
require('esm')( module, {await: true} )
( modulo || require(package).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

19
package.json Normal file
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{
"name": "esm-cli",
"version": "1.0.0",
"description": "EcmaScript Module launcher",
"main": "esm.js",
"bin": {
"esm": "./bin/esm-cli.js"
},
"preferGlobal": true,
"dependencies": {
"esm": "^3.2.18"
},
"devDependencies": {},
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"author": "",
"license": "MIT"
}