var _flatten = require('./_flatten.js');
var restArguments = require('./restArguments.js');
var bind = require('./bind.js');

// Bind a number of an object's methods to that object. Remaining arguments
// are the method names to be bound. Useful for ensuring that all callbacks
// defined on an object belong to it.
var bindAll = restArguments(function(obj, keys) {
  keys = _flatten(keys, false, false);
  var index = keys.length;
  if (index < 1) throw new Error('bindAll must be passed function names');
  while (index--) {
    var key = keys[index];
    obj[key] = bind(obj[key], obj);
  }
  return obj;
});

module.exports = bindAll;
