utils.js

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _assign = require('babel-runtime/core-js/object/assign');

var _assign2 = _interopRequireDefault(_assign);

exports.warn = warn;
exports.deprecated = deprecated;

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function warn(message) {
  if (process.env.NODE_ENV !== 'production') {
    console.error(message);
  }
}

function deprecated(fn, message) {
  if (process.env.NODE_ENV === 'production') return fn;

  var warned = false;
  var newFn = function newFn() {
    if (!warned) {
      warned = true;
      console.error(message);
    }

    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    return fn.apply(this, args);
  };

  // copy all properties
  (0, _assign2.default)(newFn, fn);

  return newFn;
}