systemjs/test/tests/advanced-plugin.js

exports.locate = function(load) {
  return {
    then: function(resolve, reject) {
      setTimeout(function() {
        resolve('custom fetch');
      }, 20);
    }
  };
}

exports.fetch = function(load) {
  return {
    then: function(resolve, reject) {
      setTimeout(function() {
        resolve(load.address);
      }, 20);
    }
  };
}

exports.translate = function(load) {
  return 'q = "' + load.source + '";';
}

exports.instantiate = function(load) {
  return {
    deps: [],
    execute: function() {
      var q;
      eval(load.source);
      return new Module({
        q: q + '!'
      });
    }
  };
}