browser: exclude two unused packages

lib/torrent.js

@@ -12,11 +12,11 @@ var FSChunkStore = require('fs-chunk-store') // browser: `memory-chunk-store`
 var ImmediateChunkStore = require('immediate-chunk-store')
 var inherits = require('inherits')
 var MultiStream = require('multistream')
-var os = require('os')
+var os = require('os') // browser exclude
 var parallel = require('run-parallel')
 var parseTorrent = require('parse-torrent')
 var path = require('path')
-var pathExists = require('path-exists')
+var pathExists = require('path-exists') // browser exclude
 var Piece = require('torrent-piece')
 var pump = require('pump')
 var randomIterate = require('random-iterate')
@@ -42,7 +42,9 @@ var PIPELINE_MAX_DURATION = 1
 var RECHOKE_INTERVAL = 10000 // 10 seconds
 var RECHOKE_OPTIMISTIC_DURATION = 2 // 30 seconds
 
-var TMP = path.join(pathExists.sync('/tmp') ? '/tmp' : os.tmpDir(), 'webtorrent')
+var TMP = typeof pathExists.sync === 'function'
+  ? path.join(pathExists.sync('/tmp') ? '/tmp' : os.tmpDir(), 'webtorrent')
+  : '/tmp/webtorrent'
 
 inherits(Torrent, EventEmitter)
 

package.json

@@ -15,6 +15,8 @@
     "bittorrent-dht/client": false,
     "fs-chunk-store": "memory-chunk-store",
     "load-ip-set": false,
+    "os": false,
+    "path-exists": false,
     "ut_pex": false
   },
   "bugs": {