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JavaScript's functional programming helper library.

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var keys = require('./keys.js');

// Invert the keys and values of an object. The values must be serializable.
function invert(obj) {
  var result = {};
  var _keys = keys(obj);
  for (var i = 0, length = _keys.length; i < length; i++) {
    result[obj[_keys[i]]] = _keys[i];
  }
  return result;
}

module.exports = invert;