91 lines
2.6 KiB
JavaScript
Executable File
91 lines
2.6 KiB
JavaScript
Executable File
#!/usr/bin/env node
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const { resolve } = require('path')
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let esm = global.esm = {
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parseArgs( args, opt = esm.argsopt )
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{
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for( let [ reg, fn ] of opt.entries() )
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args = args.filter( s=> reg.test(s) )
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.map( s=> reg.exec(s) )
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// .reduce( fn, Object.assign(args.filter( s=> !reg.test(s) ),args))
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.reduce( fn,
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Object.assign(
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args.filter( s=> !reg.test(s) ),
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esm.getArgsKV(args)
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)
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)
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return args
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},
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argsopt: new Map()
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.set( /^-{1,2}(?<key>.*?)([:=](?<value>.*?))?$/
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, (args,{groups:{key,value}})=>
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Object.assign( args, {[key]: value || true} )
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)
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.set( /^\+(?<module>.*?)$/
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, (args,{groups:{module}})=>
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(( args.imports = args.imports || [] ).push( module ), args )
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)
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.set( /^=(?<key>.*?)([:=](?<value>.*?))?$/
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, (args,{groups:{key,value}})=>
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(Object.assign( args.flags = args.flags || {}, {[key]: value || true} )
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, args)
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),
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getArgsKV: args=> Object.keys(args)
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.filter(isNaN)
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.reduce((o,k)=>({...o,[k]:args[k]}),{})
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}
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process.arguments = esm.parseArgs( process.argv.slice(2) )
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process.arguments.flags = Object.assign( { json: false }, process.arguments.flags )
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const splitted = (process.arguments.shift() || '').split(':')
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const exported = splitted.length == 1 ? undefined : splitted.pop()
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const esmodule = splitted.join(':')
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, package = resolve('./package.json')
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, modulo = resolve( esmodule )
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if( process.arguments.flags.debug )
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{
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console.log( process.cwd(), package, modulo )
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console.log( `process.argv=%o
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esmodule=%o
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exported=%o
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process.arguments=%o
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`,
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process.argv, modulo, exported, process.arguments )
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}
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process.arguments.flags.dry && process.exit()
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require = require('esm')( module, {await: true} )
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const render = esm.render = obj=>
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process.arguments.flags.json
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? render.json( obj )
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: render.log( obj )
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// ? process.stdout.write( obj&& JSON.stringify(obj,null,'\t') || '' )
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// : console.log( obj || '' )
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render.json = obj=> process.stdout.write( obj && JSON.stringify(obj,null,'\t') || '' )
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render.log = obj=> console.log( obj || '' )
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let mod = require( modulo || require(package).module )
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process.arguments.flags.debug
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&& console.log(mod)
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let toCall = mod[ exported || 'default' ]
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process.arguments.flags.debug
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&& console.log(mod, exported, toCall)
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let returned =
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typeof toCall == 'function'
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? toCall( process.arguments )
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: toCall
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process.arguments.flags.debug
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&& console.log( 'type' , typeof returned, returned instanceof Promise )
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returned instanceof Promise
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? returned.then( render, e=>console.error(e) )
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: render(returned)
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module.exports = mod
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