stop using self

lib/rarity-map.js

@@ -5,28 +5,26 @@
  */
 class RarityMap {
   constructor (torrent) {
-    const self = this
+    this._torrent = torrent
+    this._numPieces = torrent.pieces.length
+    this._pieces = new Array(this._numPieces).fill(0)
 
-    self._torrent = torrent
-    self._numPieces = torrent.pieces.length
-    self._pieces = new Array(self._numPieces).fill(0)
-
-    self._onWire = wire => {
-      self.recalculate()
-      self._initWire(wire)
+    this._onWire = wire => {
+      this.recalculate()
+      this._initWire(wire)
     }
-    self._onWireHave = index => {
-      self._pieces[index] += 1
+    this._onWireHave = index => {
+      this._pieces[index] += 1
     }
-    self._onWireBitfield = () => {
-      self.recalculate()
+    this._onWireBitfield = () => {
+      this.recalculate()
     }
 
-    self._torrent.wires.forEach(wire => {
-      self._initWire(wire)
+    this._torrent.wires.forEach(wire => {
+      this._initWire(wire)
     })
-    self._torrent.on('wire', self._onWire)
-    self.recalculate()
+    this._torrent.on('wire', this._onWire)
+    this.recalculate()
   }
 
   /**
@@ -61,31 +59,28 @@ class RarityMap {
   }
 
   destroy () {
-    const self = this
-    self._torrent.removeListener('wire', self._onWire)
-    self._torrent.wires.forEach(wire => {
-      self._cleanupWireEvents(wire)
+    this._torrent.removeListener('wire', this._onWire)
+    this._torrent.wires.forEach(wire => {
+      this._cleanupWireEvents(wire)
     })
-    self._torrent = null
-    self._pieces = null
+    this._torrent = null
+    this._pieces = null
 
-    self._onWire = null
-    self._onWireHave = null
-    self._onWireBitfield = null
+    this._onWire = null
+    this._onWireHave = null
+    this._onWireBitfield = null
   }
 
   _initWire (wire) {
-    const self = this
-
-    wire._onClose = function () {
-      self._cleanupWireEvents(wire)
+    wire._onClose = () => {
+      this._cleanupWireEvents(wire)
       for (let i = 0; i < this._numPieces; ++i) {
-        self._pieces[i] -= wire.peerPieces.get(i)
+        this._pieces[i] -= wire.peerPieces.get(i)
       }
     }
 
-    wire.on('have', self._onWireHave)
-    wire.on('bitfield', self._onWireBitfield)
+    wire.on('have', this._onWireHave)
+    wire.on('bitfield', this._onWireBitfield)
     wire.once('close', wire._onClose)
   }