Grunt task to remove console logging

remove-logging.js

grunt.registerMultiTask("removelogging", "Remove console logging", function() {
  var done = this.async();
  var exec = require("child_process").exec;
  var options = this.data.options || {};

  grunt.file.expandFiles(this.data.files).forEach(function(file) {
    var cmd = "sed -E 's/console\.(log|warn|error|assert|count|clear|group|groupEnd|trace|debug|dir|dirxml|profile|profileEnd|time|timeEnd)\((.*)\);?//g' " + file;

    exec(cmd, options, function(error, stdout) {
      if(error !== null) {
        grunt.log.error('exec error: ' + error);
        return;
      }

      grunt.file.write(file, stdout);
      done();
    });
  });
});

usage.js

grunt.initConfig({
  removelogging: {
    dist: {
      files: [ "dist/file.js" ],

      // options to pass to exec: http://nodejs.org/api/child_process.html#child_process_child_process_exec_command_options_callback
      options: {
        maxBuffer: 1024 * 1024
      }
    }
  }
});

For those who arrived at this through a Google search there's a more recently updated npm module that does this https://github.com/ehynds/grunt-remove-logging