rm useless module

lib/stat.js

@@ -1,8 +1,5 @@
-var usage     = require('usage'),
-    os        = require('os'),
-    exec      = require('child_process').exec,
-    winCPU    = require('windows-cpu'),
-    isWindows = process.platform == 'win32';
+var os        = require('os'),
+    exec      = require('child_process').exec;
 
 /**
  * System states
@@ -57,19 +54,11 @@ var stat = module.exports = {
  * @param fn
  */
 stat.cpuUsage = function(fn){
-  if (isWindows) {
-    winCPU.totalLoad(function(err, results){
-      fn(err, results.reduce(function(p1, p2){
-        return (p1 + (p2 || p1)) / 2;
-      }).toFixed(2));
-    })
-  } else {
-    setTimeout(function(ctx, stat1){
-      var stat2 = ctx.cpuInfo(),
-          perc = 100 * (1 - (stat2.idle - stat1.idle) / (stat2.total - stat1.total));
-      fn(null, perc.toFixed(2));
-    }, 1000, this, this.cpuInfo());
-  }
+  setTimeout(function(ctx, stat1){
+    var stat2 = ctx.cpuInfo(),
+        perc = 100 * (1 - (stat2.idle - stat1.idle) / (stat2.total - stat1.total));
+    fn(null, perc.toFixed(2));
+  }, 1000, this, this.cpuInfo());
 };
 
 /**
@@ -89,32 +78,4 @@ stat.cpuInfo = function(fn){
     'idle' : idle,
     'total': total
   };
-};
-
-/**
- * Get memory usage by process id.
- * @param {String} pid
- * @param {Function} cb
- */
-stat.memoryUsage = function(pid, cb){
-  if (isWindows) {
-    exec('TaskList /fi "PID eq ' + pid + '" /fo CSV', function(err, stdout, stderr){
-      if (err) {
-        return cb(err);
-      }
-      var lines = stdout.split('\n');
-      if (lines != 2) {
-        return cb(null, '0');
-      }
-      var data = lines[1].split(',');
-      cb(data.length == 0 ? '0' : data[data.length - 1].replace(/[\'\",\s]/g, ''));
-    })
-  } else {
-    usage.lookup(pid, function(err, result){
-      if (err) {
-        return cb(err);
-      }
-      return cb(null, result.memory);
-    });
-  }
 };

package.json

@@ -39,7 +39,6 @@
     "chalk": "~0.5.1",
     "express": "~4.10.1",
     "swig": "~1.4.2",
-    "usage": "~0.5.0",
     "windows-cpu": "~0.1.1",
     "socket.io": "~1.2.0",
     "nconf": "~0.6.9",