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'use strict'
const onExit = require('signal-exit')
const path = require('path')
const fs = require('fs')
const process = require('process')
const binName = path.basename(require.main.filename, '.js')
const mainPath = path.resolve(require.main.paths[0], '..')
module.exports = function (entry) {
let started = false
let exited = false
onExit((code, signal) => {
if (started && !exited) {
// tested, but exit mechanism can't collect coverage
/* istanbul ignore next */
if (signal) {
/* istanbul ignore next */
console.error('Abnormal exit:', signal)
} else {
console.error('Abnormal exit: Promises not resolved')
}
process.exit(code || 1)
}
})
fs.readFile(mainPath + '/package.json', (err, data) => {
try {
const pkg = JSON.parse(data)
const nameMatch = new RegExp(binName, 'i')
let isInPackage = typeof pkg.bin === 'string'
? nameMatch.test(pkg.bin)
: pkg.bin && Object.keys(pkg.bin).some(b => nameMatch.test(b) || nameMatch.test(pkg.bin[b]))
if (isInPackage) {
/* istanbul ignore next */
if (global['NO_NOTIFIER']) throw new Error('NO NOTIFIER')
const updateNotifier = require('update-notifier');
updateNotifier({pkg: pkg}).notify()
}
} catch (ex) { /* don't care */ }
})
let haveYargs
let yargs
let opts
let argv = process.argv.slice(2)
if (process.platform === 'win32') {
const glob = require('glob').sync
const cwd = process.cwd()
const statCache = {}
const nonull = true
const expandedArgs = []
argv.forEach(_ => expandedArgs.push.apply(expandedArgs, glob(_, {cwd, statCache, nonull})))
argv = expandedArgs
}
try {
/* istanbul ignore next */
if (global['NO_YARGS']) throw new Error('NO YARGS')
yargs = require('yargs')(argv)
haveYargs = true
} catch (_) {
opts = {_: argv}
const noYargs = () => {
throw new Error('Argument parsing is not available (could not find yargs), to install run: npm i yargs')
}
// only missing on v4, which has incomplete coverage anyway
/* istanbul ignore next */
yargs = global.Proxy && new global.Proxy({}, {
getPrototypeOf: noYargs,
setPrototypeOf: noYargs,
isExtensible: noYargs,
preventExtensions: noYargs,
getOwnPropertyDescriptor: noYargs,
defineProperty: noYargs,
has: noYargs,
get: noYargs,
set: noYargs,
deleteProperty: noYargs,
ownKeys: noYargs,
apply: noYargs,
construct: noYargs
})
}
setImmediate(() => {
if (haveYargs) {
opts = yargs.argv
argv = opts._
}
started = true
try {
const appPromise = entry.apply(null, [opts].concat(argv))
if (!appPromise || !appPromise.then) {
return onError(new Error('Application entry point' + (entry.name ? ` (${entry.name})` : '') + ' did not return a promise.'))
}
appPromise.then(() => exited = true, onError)
} catch (ex) {
onError (ex)
}
function onError (err) {
exited = true
if (typeof err === 'number') {
process.exit(err)
} else if (err) {
console.error((err && err.stack) ? err.stack : err)
}
process.exit(1)
}
})
return yargs
}