Function memoizeStringOnly

docs/lib/react.js:19108–19116

* Memoizes the return value of a function that accepts one string argument. * * @param {function} callback * @return {function}

(callback)

 */

function memoizeStringOnly(callback) {
  var cache = {};
  return function (string) {
    if (!cache.hasOwnProperty(string)) {
      cache[string] = callback.call(this, string);
    }
    return cache[string];
  };
}

module.exports = memoizeStringOnly;
},{}],163:[function(_dereq_,module,exports){