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Dir : ~/usr/share/node_modules/undici/lib/api/

View File Name : abort-signal.js

const { RequestAbortedError } = require('../core/errors')

const kListener = Symbol('kListener')
const kSignal = Symbol('kSignal')

function abort (self) {
  if (self.abort) {
    self.abort()
  } else {
    self.onError(new RequestAbortedError())
  }
}

function addSignal (self, signal) {
  self[kSignal] = null
  self[kListener] = null

  if (!signal) {
    return
  }

  if (signal.aborted) {
    abort(self)
    return
  }

  self[kSignal] = signal
  self[kListener] = () => {
    abort(self)
  }

  if ('addEventListener' in self[kSignal]) {
    self[kSignal].addEventListener('abort', self[kListener])
  } else {
    self[kSignal].addListener('abort', self[kListener])
  }
}

function removeSignal (self) {
  if (!self[kSignal]) {
    return
  }

  if ('removeEventListener' in self[kSignal]) {
    self[kSignal].removeEventListener('abort', self[kListener])
  } else {
    self[kSignal].removeListener('abort', self[kListener])
  }

  self[kSignal] = null
  self[kListener] = null
}

module.exports = {
  addSignal,
  removeSignal
}