Function contextual

index.js:319–336

(fn)

    };
  };
  var contextual = function contextual(fn) {
    var check = true;
    var context = null;
    var augmented = augmentor(function () {
      return fn.apply(context, arguments);
    });
    return function hook() {
      var result = augmented.apply(context = this, arguments); // perform hasEffect check only once

      if (check) {
        check = !check; // and copy same Array if any FX was used

        if (hasEffect(augmented)) effects.set(hook, effects.get(augmented));
      }

      return result;
    };
  }; // useReducer

  var updates = umap(new WeakMap());