FM / signal-exit

/var/www/cobraambalaj/node_modules/signal-exit/

/var/www/cobraambalaj/node_modules/signal-exit

Name	Size	Mode	Actions
CHANGELOG.md	1456	0644	edit dl rm
index.js	4124	0644	edit dl rm
LICENSE.txt	748	0644	edit dl rm
package.json	1719	0644	edit dl rm
README.md	1342	0644	edit dl rm
signals.js	1295	0644	edit dl rm

Edit: /var/www/cobraambalaj/node_modules/signal-exit/index.js (4124B)

// Note: since nyc uses this module to output coverage, any lines
// that are in the direct sync flow of nyc's outputCoverage are
// ignored, since we can never get coverage for them.
var assert = require('assert')
var signals = require('./signals.js')
var isWin = /^win/i.test(process.platform)

var EE = require('events')
/* istanbul ignore if */
if (typeof EE !== 'function') {
  EE = EE.EventEmitter
}

var emitter
if (process.__signal_exit_emitter__) {
  emitter = process.__signal_exit_emitter__
} else {
  emitter = process.__signal_exit_emitter__ = new EE()
  emitter.count = 0
  emitter.emitted = {}
}

// Because this emitter is a global, we have to check to see if a
// previous version of this library failed to enable infinite listeners.
// I know what you're about to say.  But literally everything about
// signal-exit is a compromise with evil.  Get used to it.
if (!emitter.infinite) {
  emitter.setMaxListeners(Infinity)
  emitter.infinite = true
}

module.exports = function (cb, opts) {
  assert.equal(typeof cb, 'function', 'a callback must be provided for exit handler')

if (loaded === false) {
    load()
  }

var ev = 'exit'
  if (opts && opts.alwaysLast) {
    ev = 'afterexit'
  }

var remove = function () {
    emitter.removeListener(ev, cb)
    if (emitter.listeners('exit').length === 0 &&
        emitter.listeners('afterexit').length === 0) {
      unload()
    }
  }
  emitter.on(ev, cb)

return remove
}

module.exports.unload = unload
function unload () {
  if (!loaded) {
    return
  }
  loaded = false

signals.forEach(function (sig) {
    try {
      process.removeListener(sig, sigListeners[sig])
    } catch (er) {}
  })
  process.emit = originalProcessEmit
  process.reallyExit = originalProcessReallyExit
  emitter.count -= 1
}

function emit (event, code, signal) {
  if (emitter.emitted[event]) {
    return
  }
  emitter.emitted[event] = true
  emitter.emit(event, code, signal)
}

// { <signal>: <listener fn>, ... }
var sigListeners = {}
signals.forEach(function (sig) {
  sigListeners[sig] = function listener () {
    // If there are no other listeners, an exit is coming!
    // Simplest way: remove us and then re-send the signal.
    // We know that this will kill the process, so we can
    // safely emit now.
    var listeners = process.listeners(sig)
    if (listeners.length === emitter.count) {
      unload()
      emit('exit', null, sig)
      /* istanbul ignore next */
      emit('afterexit', null, sig)
      /* istanbul ignore next */
      if (isWin && sig === 'SIGHUP') {
        // "SIGHUP" throws an `ENOSYS` error on Windows,
        // so use a supported signal instead
        sig = 'SIGINT'
      }
      process.kill(process.pid, sig)
    }
  }
})

module.exports.signals = function () {
  return signals
}

module.exports.load = load

var loaded = false

function load () {
  if (loaded) {
    return
  }
  loaded = true

// This is the number of onSignalExit's that are in play.
  // It's important so that we can count the correct number of
  // listeners on signals, and don't wait for the other one to
  // handle it instead of us.
  emitter.count += 1

signals = signals.filter(function (sig) {
    try {
      process.on(sig, sigListeners[sig])
      return true
    } catch (er) {
      return false
    }
  })

process.emit = processEmit
  process.reallyExit = processReallyExit
}

var originalProcessReallyExit = process.reallyExit
function processReallyExit (code) {
  process.exitCode = code || 0
  emit('exit', process.exitCode, null)
  /* istanbul ignore next */
  emit('afterexit', process.exitCode, null)
  /* istanbul ignore next */
  originalProcessReallyExit.call(process, process.exitCode)
}

var originalProcessEmit = process.emit
function processEmit (ev, arg) {
  if (ev === 'exit') {
    if (arg !== undefined) {
      process.exitCode = arg
    }
    var ret = originalProcessEmit.apply(this, arguments)
    emit('exit', process.exitCode, null)
    /* istanbul ignore next */
    emit('afterexit', process.exitCode, null)
    return ret
  } else {
    return originalProcessEmit.apply(this, arguments)
  }
}

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