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- # pick.js

- ¶

      import restArguments from './restArguments.js';
      import isFunction from './isFunction.js';
      import optimizeCb from './_optimizeCb.js';
      import allKeys from './allKeys.js';
      import keyInObj from './_keyInObj.js';
      import flatten from './_flatten.js';

- ¶

  Return a copy of the object only containing the allowed properties.

      export default restArguments(function(obj, keys) {
        var result = {}, iteratee = keys[0];
        if (obj == null) return result;
        if (isFunction(iteratee)) {
          if (keys.length > 1) iteratee = optimizeCb(iteratee, keys[1]);
          keys = allKeys(obj);
        } else {
          iteratee = keyInObj;
          keys = flatten(keys, false, false);
          obj = Object(obj);
        }
        for (var i = 0, length = keys.length; i < length; i++) {
          var key = keys[i];
          var value = obj[key];
          if (iteratee(value, key, obj)) result[key] = value;
        }
        return result;
      });