Tracking de l'application VApp (IHM du jeu)

VApp/node_modules/readable-stream/lib/internal/streams/legacy.js

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+'use strict'
+
+const { ArrayIsArray, ObjectSetPrototypeOf } = require('../../ours/primordials')
+const { EventEmitter: EE } = require('events')
+function Stream(opts) {
+  EE.call(this, opts)
+}
+ObjectSetPrototypeOf(Stream.prototype, EE.prototype)
+ObjectSetPrototypeOf(Stream, EE)
+Stream.prototype.pipe = function (dest, options) {
+  const source = this
+  function ondata(chunk) {
+    if (dest.writable && dest.write(chunk) === false && source.pause) {
+      source.pause()
+    }
+  }
+  source.on('data', ondata)
+  function ondrain() {
+    if (source.readable && source.resume) {
+      source.resume()
+    }
+  }
+  dest.on('drain', ondrain)
+
+  // If the 'end' option is not supplied, dest.end() will be called when
+  // source gets the 'end' or 'close' events.  Only dest.end() once.
+  if (!dest._isStdio && (!options || options.end !== false)) {
+    source.on('end', onend)
+    source.on('close', onclose)
+  }
+  let didOnEnd = false
+  function onend() {
+    if (didOnEnd) return
+    didOnEnd = true
+    dest.end()
+  }
+  function onclose() {
+    if (didOnEnd) return
+    didOnEnd = true
+    if (typeof dest.destroy === 'function') dest.destroy()
+  }
+
+  // Don't leave dangling pipes when there are errors.
+  function onerror(er) {
+    cleanup()
+    if (EE.listenerCount(this, 'error') === 0) {
+      this.emit('error', er)
+    }
+  }
+  prependListener(source, 'error', onerror)
+  prependListener(dest, 'error', onerror)
+
+  // Remove all the event listeners that were added.
+  function cleanup() {
+    source.removeListener('data', ondata)
+    dest.removeListener('drain', ondrain)
+    source.removeListener('end', onend)
+    source.removeListener('close', onclose)
+    source.removeListener('error', onerror)
+    dest.removeListener('error', onerror)
+    source.removeListener('end', cleanup)
+    source.removeListener('close', cleanup)
+    dest.removeListener('close', cleanup)
+  }
+  source.on('end', cleanup)
+  source.on('close', cleanup)
+  dest.on('close', cleanup)
+  dest.emit('pipe', source)
+
+  // Allow for unix-like usage: A.pipe(B).pipe(C)
+  return dest
+}
+function prependListener(emitter, event, fn) {
+  // Sadly this is not cacheable as some libraries bundle their own
+  // event emitter implementation with them.
+  if (typeof emitter.prependListener === 'function') return emitter.prependListener(event, fn)
+
+  // This is a hack to make sure that our error handler is attached before any
+  // userland ones.  NEVER DO THIS. This is here only because this code needs
+  // to continue to work with older versions of Node.js that do not include
+  // the prependListener() method. The goal is to eventually remove this hack.
+  if (!emitter._events || !emitter._events[event]) emitter.on(event, fn)
+  else if (ArrayIsArray(emitter._events[event])) emitter._events[event].unshift(fn)
+  else emitter._events[event] = [fn, emitter._events[event]]
+}
+module.exports = {
+  Stream,
+  prependListener
+}