Merge pull request #14 from ElliotChong/feature/throttle

Add --throttle option

README.md

@@ -82,6 +82,8 @@ Options:
                           surrounded with quotes when command contains spaces
   -d, --debounce          Debounce timeout in ms for executing command
                                                                   [default: 400]
+  -t, --throttle          Throttle timeout in ms for executing command
+                                                                  [default: 0]
   -s, --follow-symlinks   When not set, only the symlinks themselves will be
                           watched for changes instead of following the link
                           references and bubbling events through the links path

index.js

@@ -17,6 +17,7 @@ var EVENT_DESCRIPTIONS = {
 
 var defaultOpts = {
     debounce: 400,
+    throttle: 0,
     followSymlinks: false,
     ignore: null,
     polling: false,
@@ -55,6 +56,12 @@ var argv = require('yargs')
         describe: 'Debounce timeout in ms for executing command',
         type: 'number'
     })
+    .option('t', {
+        alias: 'throttle',
+        default: defaultOpts.throttle,
+        describe: 'Throttle timeout in ms for executing command',
+        type: 'number'
+    })
     .option('s', {
         alias: 'follow-symlinks',
         default: defaultOpts.followSymlinks,
@@ -131,7 +138,8 @@ function startWatching(opts) {
     var chokidarOpts = createChokidarOpts(opts);
     var watcher = chokidar.watch(opts.patterns, chokidarOpts);
 
-    var debouncedRun = _.debounce(run, opts.debounce);
+    var throttledRun = _.throttle(run, opts.throttle);
+    var debouncedRun = _.debounce(throttledRun, opts.debounce);
     watcher.on('all', function(event, path) {
         var description = EVENT_DESCRIPTIONS[event] + ':';