e-lado/node_modules0/watch/test/test_watchTree.js

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var fs = require('fs')
  , watch = require('../main')
  , assert = require('assert')
  ;

//
// Demonstrate that the function of 'filter' is semantically inconsistent with
// usual convention, that returning true means 'keep this'.
//
function isDirOrQ(f, stat) { return stat.isDirectory() || f === 'Q'; }

watch.watchTree(__dirname, { filter: isDirOrQ }, function (f, curr, prev) {
  if (typeof f == 'object' && prev === null && curr === null) {
    Object.keys(f).forEach(function(name) {
      var stat = f[name];
      assert(isDirOrQ(name, stat));
      fs.unwatchFile(name);
    });
  }
});