// Copyright 2013 Traceur Authors. // // Licensed under the Apache License, Version 2.0 (the “License”); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an “AS IS” BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License.

var fs = require('fs');

function stripShebang(data) {

if (/^#!/.test(data))
  data = '//' + data;
return data;

}

var nodeLoader = {

load: function(url, callback, errback) {
  fs.readFile(url, 'utf8', function(err, data) {
    if (err) {
      err.message = err.message.replace('ENOENT, open', 'File not found');
      errback(err);
    } else {
      callback(stripShebang(data));
    }
  });

  // Returns an abort function.
  return function() {
    callback = function() {};
  };
}

};

module.exports = nodeLoader;